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You have applications that have frequently executed queries, and produce small and static result sets.
You configure the sqlnet.ora file in the client machine to set a nonzero value for the OCI_RESULT_CACHE_MAX_SIZE parameter.
What is the purpose of this configuration?
to avoid round trips to the server by enabling caching of query results in client memory
to improve performance by storing a copy of the data from the private SQL area of the PGA
to enhance the query performance by creating a cache in the client memory for sorting operations
to avoid the storing of query plans and results in the server by creating a cache in the client memory
You plan to use SQL Performance Analyzer to analyze the SQL workload. You created a SQL Tuning Set as a part of the workload capturing. What information is captured as part of this process? (Choose all that apply.)
the SQL text
the execution plan
the execution context Do- the execution frequency
the system change number (SCN)
Answer: A, C, D
View the following SQL statements: Transaction T1
INSERT INTO hr.regions VALUES (5,'Pole'); COMMIT;
UPDATE hr.regions SET region_name='Poles' WHERE region_id = 5; COMMIT;
UPDATE hr.regions SET region_name='North and South Poles' WHERE regionjd = 5;
You want to back out transaction T2. Which option would you use?
It is possible, but transaction T3 also backs out.
It is possible with the NOCASCADE_FORCE option.
It is possible with the NONCONFLICT_ONLY option.
It is not possible because it has conflicts with transaction T3.
Which three statements are true regarding persistent lightweight jobs? (Choose three.)
The user cannot set privileges on persistent lightweight jobs.
The use of a template is mandatory to create persistent lightweight jobs.
Persistent lightweight jobs modify several tables in the data dictionary to generate a lot of redo.
Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time.
Persistent lightweight jobs are useful when users need to create a small number of jobs that run infrequently.
Answer: A, B, D
What is the advantage of setting the ASM-preferred mirror read for the Stretch cluster configuration?
It improves resync operations.
This feature enables much faster file opens.
It improves performance as fewer extent pointers are needed in the shared pool.
It improves performance by reading from a copy of an extent closest to the node.
Identify two situations in which you can use Data Recovery Advisor for recovery. (Choose two.)
The database files are corrupted when the database is open
The archived log files are missing for which backup is not available.
The user has dropped an important table that needs to be recovered.
You are not able to start up the database instance because the required database files are missing.
Answer: A, D
The ADMIN_EMP table has columns EMPNO, ENAME, DEPTNO, and SAL. It has a materialized view EMP_MV with a materialized log and an ENAMEJDX index on the ENAME column. You need to perform an online table redefinition on the ADMIN_EMP table to move it from the TBS1 tablespace to the TBS2 tablespace in the same schema. What action is required for the dependent objects when you perform online redefinition on the table?
The materialized view should have a fast refresh performed after the online table redefinition is completed.
The materialized view should have a complete refresh performed after the online table redefinition is completed.
The materialized view, materialized log, and the index should be dropped and re- created after the online table redefinition is complete.
The materialized view and materialized log should be dropped and all constraints disabled and re-created after the online table redefinition is complete.
View the Exhibit to examine the error obtained during the I/O calibration process. There are no data files on raw devices. What is the reason for this error?
The DISK_ASYNCH_IO parameter is set to TRUE.
The FILESYSTEMIOJDPTIONS parameter is set to NONE.
Another session runs the I/O calibration process concurrently.
The pending area has not been created before running the I/O calibration process.
You want to track and store all transactional changes to a table over its lifetime. To accomplish this task, you enabled Flashback Data Archive with the retention of 5 years. After some time, the business requirement changed and you were asked to change the retention from 5 years to 3 years. To accomplish this, you issued the following command: ALTER FLASHBACK ARCHIVE fla1 MODIFY RETENTION 3 YEAR; What is the
implication of this command?
The command produces an error because the retention time cannot be reduced.
All historical data older than three years is purged from the flashback archive FLA1.
All historical data is purged and the new flashback data archives are maintained for three years.
All historical data is retained but the subsequent flashback data archives are maintained for only three years.
Examine the following command:
ALTER DISKGROUP data MOUNT FORCE;
In which scenario can you use the above command to mount the disk group?
when ASM disk goes offline
when one or more ASM files are dropped
when some disks in a disk group are offline
when some disks in a failure group for a disk group are rebalancing
To control the execution of a server process when it is receiving bad packets from a potentially malicious client, you set the EC_PROTOCOL_ERROR_FURTHER_ACTION initialization parameter as follows:
SQL> ALTER SYSTEM SET SEC_PROTOCOL_ERROR_FURTHER_ACTION =
What is the significance of this setting?
It terminates the client connection after 10 bad packets and the client cannot reconnect to the same instance.
It terminates the client connection after 10 bad packets but the client can still reconnect, and attempt the same operation again.
It terminates the client connection 10 seconds after receiving a bad packet and the client cannot reconnect to the same instance.
It terminates the client connection after receiving a bad packet and the client can reconnect to the same instance after 10 minutes.
You have the following requirements in relation to the detection of block corruption for your database instance:
Check for logical self-consistency of data blocks when modified in memory.
Checksums are calculated before and after the block change.
Checks are performed for the lost writes to the physical standby database. Which method would help you perform the above checks automatically?
Set the DB_SECUREFILE parameter to PERMITTED.
Set the DB_ULTRA_SAFE parameter to DATAJDNLY.
Set the DB_LOCK_CHECKSUM parameter to TYPICAL.
Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL.
You are managing an Oracle Database 11 g instance and an Oracle Database 10g instance on the same machine. Both instances use the ASM instance as storage. Which statements regarding the ASM disk group compatibility attributes are true in this scenario? (Choose all that apply.)
ASM compatibility controls which features for the ASM will be enabled.
RDBMS compatibility and the database version determines whether a database instance can mount the ASM disk group
The RDBMS compatibility settings for a disk group control the format of data structures for ASM metadata on the disk.
The database-compatibility version settings for each instance must be greater than or equal to the RDBMS compatibility of all ASM disk groups used by that database instances.
Answer: A, B, D
Evaluate the following function code:
CREATE FUNCTION get_dept_avg(dept_id NUMBER) RETURN NUMBER
RESULT_CACHE RELIES_ON (EMPLOYEES) IS
avgsal NUMBER(6); BEGIN
SELECT AVG(SAU\RY)INTO avgsal FROM EMPLOYEES
WHERE DEPARTMENTJD = dept_id;
RETURN avgsal; END get_dept_avg;
Which statement is true regarding the above function?
The cached result becomes invalid when any structural change is done to the EMPLOYEES table.
If the function execution results in an unhandled exception, the exception result is also stored in the cache.
Each time the function is invoked in a different session, the current result in the result cache gets overwritten.
If the function is invoked with a different parameter value, the existing result in the result cache gets overwritten by the latest value.
Following is the list of locations in random order where oranfstab can be placed. 1 ./etc/mtab
What is the sequence in which Direct NFS will search the locations?
B. 3,2, 1
C. 2,3, 1
While performing the backup of the flash recovery area, you notice that one of the archived redo log files is missing. You have multiple destinations for archived redo log files. What implications does it have on the backup of the flash recovery area?
The backup succeeds but it would be without the missing archived log.
The backup fails because one of the archived redo log files is missing.
The backup succeeds because it fails over to one of the alternative archived redo log destinations.
During backup, you are prompted for the alternative destination for the missing archived redo log file.
You performed the RMAN database backup with the KEEP option. Which two statements are true regarding this backup? (Choose two.)
The KEEP option overrides the configured retention policy.
The KEEP option is an attribute of an individual backup piece.
The backup contains only data files and archived redo log files.
The backup contains data files, the server parameter file, and the control file even if the control file autobackup is disabled.
Answer: A, D
Which statement is true when Automatic Workload Repository (AWR) baselines are created using baseline templates?
AWR baselines are always created as repeating baselines.
AWR baselines can be created on the basis of two time values.
AWR baselines are always created with infinite expiration duration.
AWR baselines are always created using the Automatic Workload Repository (AWR) retention period as expiration duration.
What two statements are true regarding the recommendations received from the SQL Access Advisor? (Choose two.)
It can recommend partitioning only on tables that have at least 10,000 rows.
It cannot generate recommendations that support multiple workload queries.
It can recommend only B-tree indexes and not bitmap or function-based indexes.
It can recommend partitioning on tables provided that the workloads have some predicates and joins on the columns of the NUMBER or DATE type.
Answer: A, D
What are the advantages of variable extent size support for large ASM files? (Choose two.)
It improves performance in the extended cluster configuration by reading from a local copy of an extent.
It improves resync operations when the disk comes online after being taken offline for maintenance purposes.
This feature enables faster file opens because of the reduction in the amount of memory that is required to store file extents.
Fewer extent pointers are needed to describe the file and less memory is required to manage the extent maps in the shared pool.
Answer: C, D
You plan to collect the Automatic Workload Repository (AWR) data every Monday morning for a month. You want Oracle Database to automatically create a baseline every Monday and remove the old baseline. What is the correct action to achieve this?
Create a repeating baseline template.
Insert a finding directive for future ADDM tasks.
Create and populate a SQL Tuning Set from the AWR on every Monday.
Change the RETENTION setting for the AWR snapshots to 7 days on Monday.
Oracle 1Z1-050 Exam (Oracle Database 11g- New Features for Administrators) Detailed Information
1Z1-050 Oracle Database 11g- New Features for(R) Administrators
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Exam Questions Updated On : Click To Check Update
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Test Code : 1Z1-050
Test Name : Oracle Database 11g- New Features for(R) Administrators
Vendor Name : Oracle
Q&A : 183 Real Questions
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Oracle Database 11g- New Features for(R) Administrators book
Oracle Database 11g: New facets for DBAs and developers | 1Z1-050 Real Questions and VCE Practice Test
Sam R. Alapati, Charles Kim
publisher Apress ISBN 978-1-59059-910-5RRP $44.99 Reviewed by means ofElias Pimenidis MBCS CITP ranking 9 out of 10
Oracle Database 11g If an skilled Oracle expert is attempting to find a superb aiding publication to help them switch their purposes to the Oracle 11g ambiance, here's a pretty good starting factor.
It isn't the 'lacking manual', neither is it a brief repair reference book. The ebook quite simply provides a neatly compiled set of chapters that guides an experienced database administrator or an Oracle developer in the course of the new elements.
It does so by highlighting key ameliorations from outdated models of Oracle, providing helpful information and small samples of code at areas where they appear to be most valuable.
It starts off with probably the most crucial installation section guiding the reader through various features, culminating to a whole lot favored chapters on software building and facts warehousing.
A reader cannot predict to find every single feature and secret of Oracle 11g within the 600 pages of this ebook, but can confidently rely on it offering a primary degree of reference guide when getting accustomed to the new environment. It saves time searching via voluminous and infrequently repetitive professional manuals, while preserving an entire checklist of key issues appealing to the database expert.
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extra counsel: Apress
Oracle Database 11gR2: installation Grid Infrastructure | 1Z1-050 Real Questions and VCE Practice Test
Synopsis.Oracle Database 11g release 2 makes it a whole lot easier to configure and incorporate most of the grid computing points that had been simplest available in a real application Clusters (RAC) clustered database ambiance in previous releases for a single-illustration Oracle database. this article – the primary in this collection - will reveal how to install and configure a brand new Oracle 11g free up 2 (11gR2) Grid Infrastructure domestic because the basis for the majority of those grid computing elements.
It’s been just a few months in view that I summarized the extraordinary array of recent aspects that Oracle has introduced as a part of Oracle Database release 11gR2, and in that span of time, I’ve been experimenting with those features as I’ve developed a new infrastructure for experimentation. among the most intriguing new features is the consolidation of automatic Storage management (ASM) with Oracle Clusterware (OC) into a practical and good association called the Oracle Grid Infrastructure (GI). As I’ll display listed here, the venerable Oracle commonplace Installer (OUI) utility receives a welcome update during this release, however first I’ll deserve to perform fairly slightly of system administration work earlier than we are able to invoke it and explore its new facets.
First ... A word about the (Computing) ambiance. I’ve made some long-preferred alterations to my domestic office’s personal computing infrastructure in order that i can control my workload quite simply and efficaciously with my favorite virtualization atmosphere, VMWare:
I’ve upgraded to Oracle commercial enterprise Linux (OEL) 5 replace 2 (kernel 2.6.18-92.el5) for my base computing platform, a house-grown gaming server with 4GB of reminiscence operating an AMD Opteron twin-core processor.
I’ve additionally at last moved as much as VMWare laptop edition 7.0.0 for all my VMWare endeavors, and though I still now and again long for the freedom of VMWare Server 2.0a (as in free!), I’ve discovered that workstation is barely as good and that it really works extremely well with OEL as each its host and visitor OS. developing For Oracle 11gR2 Grid Infrastructure
I’m going to put in force my 11gR2 Grid Infrastructure by way of a collection of Oracle most excellent practices that I’ve encountered through the years and have gleaned via an intensive studying of Oracle’s technical documentation. I’ll be the usage of raw disk partitions for configuring the entire ASM disks with the intention to finally incorporate the a lot of ASM disk organizations vital for my demonstrations.
developing the mandatory uncooked Partitions. The Oracle 11gR2 Grid Infrastructure leverages ASM to save dissimilar copies of the Oracle Clusterware Registry (OCR) file, distinct vote casting Disks, and of course the ASM disk agencies disks themselves. in view that the maximum variety of logical partitions that can be created within anyone prolonged partition is 12, I’ve created two VMWare virtual disks sized at 18.5 GB and eleven.0 GB, respectively. here’s the output from the terminal session all the way through which I used the Linux fdisk command to create the final logical partitions:
[root@11gR2Base ~]# fdisk -l /dev/sde Disk /dev/sde: 19.3 GB, 19327352832 bytes 255 heads, sixty three sectors/song, 2349 cylinders units = cylinders of 16065 * 512 = 8225280 bytes equipment Boot start end Blocks identification gadget /dev/sde1 1 2349 18868311 5 prolonged /dev/sde5 1 281 2257069+ 83 Linux /dev/sde6 282 562 2257101 83 Linux /dev/sde7 563 843 2257101 83 Linux /dev/sde8 844 1124 2257101 eighty three Linux /dev/sde9 1125 1405 2257101 eighty three Linux /dev/sde10 1406 1686 2257101 eighty three Linux /dev/sde11 1687 1967 2257101 eighty three Linux /dev/sde12 1968 2248 2257101 eighty three Linux [root@11gR2Base ~]# fdisk -l /dev/sdf Disk /dev/sdf: 12.0 GB, 12079595520 bytes 255 heads, 63 sectors/tune, 1468 cylinders contraptions = cylinders of 16065 * 512 = 8225280 bytes machine Boot beginning conclusion Blocks identification equipment /dev/sdf1 1 1468 11791678+ 5 extended /dev/sdf5 1 281 2257069+ eighty three Linux /dev/sdf6 282 562 2257101 eighty three Linux /dev/sdf7 563 843 2257101
eighty three Linux /dev/sdf8 844 1124 2257101 eighty three Linux /dev/sdf9 1125 1405 2257101 83 Linux
Assigning raw Partitions to block gadget Endpoints. Oracle has suggested for a while that block instruments are a far better choice for the ASM file equipment, mainly considering the fact that I’ve every so often heard rumors that help for typical uncooked gadgets allotted during the /and so on/sysconfig/rawdevices configuration file could be decreased or disappear in the future.
For this and all future Oracle 11gR2 elements demonstrations, I’ve configured a different service, losetup, in order to construct, configure and allocate virtual block contraptions all over server startup. For the losetup script to work correctly, besides the fact that children, observe that I additionally mandatory to boost the default number of loopback gadgets from eight to sixteen; I did this through adding here line to the /and many others/modprobe.conf gadget configuration file, and then rebooting the server to make certain it took impact:
options loop max_loop=sixteen
list 1.1 indicates the losetup script I used to finished the task of raw partitions to digital block contraptions. After I copied the script to file /and many others/init.d/losetup, I then registered the new carrier (as the root user) via chkconfig:
#> chmod 775 /etc/init.d/losetup #> chkconfig losetup --add #> chkconfig losetup on #> chkconfig losetup --listing
After rebooting the server, right here’s the outcomes of imposing the losetup script – the successful allocation of block contraptions as shown under:
[root@11gR2Base ~]# ls -la /dev/xv* lrwxrwxrwx 1 root root 10 Feb 7 20:49 /dev/xvdb -> /dev/loop1 lrwxrwxrwx 1 root root 10 Feb 7 20:forty nine /dev/xvdc -> /dev/loop2 lrwxrwxrwx 1 root root 10 Feb 7 20:49 /dev/xvdd -> /dev/loop3 lrwxrwxrwx 1 root root 10 Feb 7 20:forty nine /dev/xvde -> /dev/loop4 lrwxrwxrwx 1 root root 10 Feb 7 20:forty nine /dev/xvdf -> /dev/loop5 lrwxrwxrwx 1 root root 10 Feb 7 20:49 /dev/xvdg -> /dev/loop6 lrwxrwxrwx 1 root root 10 Feb 7 20:forty nine /dev/xvdh -> /dev/loop7 lrwxrwxrwx 1 root root 10 Feb 7 20:49 /dev/xvdi -> /dev/loop8 lrwxrwxrwx 1 root root 10 Feb 7 20:forty nine /dev/xvdj -> /dev/loop9 lrwxrwxrwx 1 root root eleven Feb 7 20:forty nine /dev/xvdk -> /dev/loop10 lrwxrwxrwx 1 root root eleven Feb 7 20:49 /dev/xvdl -> /dev/loop11 lrwxrwxrwx 1 root root eleven Feb 7 20:forty nine /dev/xvdm -> /dev/loop12 lrwxrwxrwx 1 root root 11 Feb 7 20:49 /dev/xvdn -> /dev/loop13 Configuring and imposing ASMLIB
To preserve my ASM configuration primary to manage, I’ll additionally use the Oracle ASM disk administration drivers that ASMLIB provides to “stamp” every target mount point before definitely developing ASM disks and disk companies. First, I’ll ascertain that the oracleasm drivers applicable to my OS kernel version have certainly been installed:
[root@11gR2Base ~]# rpm -qa | grep oracleasm oracleasm-2.6.18-92.el5xen-2.0.4-1.el5 oracleasm-2.6.18-92.el5-2.0.4-1.el5 oracleasm-2.6.18-ninety two.el5debug-2.0.4-1.el5 oracleasm-help-2.0.four-1.el5
unbelievable! My system administrator took care of this when she installed Oracle business Linux 5 Update2; otherwise, I’d be forced to remind her to down load the acceptable ORACLEASM drivers and then installation them on my server. however, it was fundamental to be certain that the connection to the appropriate oracleasm RPMs become accessible, and that took a bit extra manipulation as shown in the output beneath:
[root@11gR2Base ~]# /usr/lib/oracleasm/oracleasm_debug_link 2.6.18-92.el5 $(uname -r) oracleasm_debug_link: goal exists [root@11gR2Base ~]# ls -l /lib/modules/$(uname -r)/kernel/drivers/addon/oracleasm total 576 -rw-r--r-- 1 root root 579514 can also 23 2008 oracleasm.ko [root@11gR2Base ~]# /and so forth/init.d/oracleasm configure -i Configuring the Oracle ASM library driver. this could configure the on-boot properties of the Oracle ASM library driver. the following questions will examine whether the driver is loaded on boot and what permissions it will have. The present values may be proven in brackets (''). Hitting devoid of typing an reply will hold that latest price. Ctrl-C will abort. Default user to personal the driver interface : oracle Default neighborhood to own the driver interface : dba start Oracle ASM library driver on boot (y/n) [n]: y fix permissions of Oracle ASM disks on boot (y/n) [y]: y Writing Oracle ASM library driver configuration: [ OK ] Loading module
"oracleasm": [ OK ] Mounting ASMlib driver filesystem: [ OK ] Scanning system for ASM disks: [ OK ] [root@11gR2Base ~]# /and so on/init.d/oracleasm statusChecking if ASM is loaded: [ OK ] Checking if /dev/oracleasm is hooked up: [ OK ]
“Stamping” Candidate Disks With ASMLIB. Now that ASMLIB is configured safely, it’s time to practice ASMLIB “stamps” to each and every digital device via the createdisk command as shown under. This makes it a good deal less demanding to configure and manipulate ASM disks without needing to make use of advanced mount aspect naming conventions:
[root@11gR2Base ~]# /and so forth/init.d/oracleasm createdisk ASMDISK1 /dev/xvdb [root@11gR2Base ~]# /and so forth/init.d/oracleasm createdisk ASMDISK2 /dev/xvdc [root@11gR2Base ~]# /and so on/init.d/oracleasm createdisk ASMDISK3 /dev/xvdd [root@11gR2Base ~]# /and so on/init.d/oracleasm createdisk ASMDISK4 /dev/xvde [root@11gR2Base ~]# /and so forth/init.d/oracleasm createdisk ASMDISK5 /dev/xvdf [root@11gR2Base ~]# /and so forth/init.d/oracleasm createdisk ASMDISK6 /dev/xvdg [root@11gR2Base ~]# /and many others/init.d/oracleasm createdisk ASMDISK7 /dev/xvdh [root@11gR2Base ~]# /and so on/init.d/oracleasm createdisk ASMDISK8 /dev/xvdi [root@11gR2Base ~]# /etc/init.d/oracleasm createdisk ACFDISK1 /dev/xvdj [root@11gR2Base ~]# /and many others/init.d/oracleasm createdisk ACFDISK2 /dev/xvdk [root@11gR2Base ~]# /and so forth/init.d/oracleasm createdisk ACFDISK3 /dev/xvdl [root@11gR2Base ~]# /and so on/init.d/oracleasm createdisk ACFDISK4 /dev/xvdm [root@11gR2Base ~]# /and many others/init.d/oracleasm
createdisk ACFDISK5 /dev/xvdn
at last, I’ll invoke ASMLIB’s listdisks command to confirm that every one disks have been appropriately “stamped” and at the moment are competent to be used in live performance with my upcoming Grid Infrastructure installation:
[root@11gR2Base ~]# /etc/init.d/oracleasm listdisks ACFDISK1 ACFDISK2 ACFDISK3 ACFDISK4 ACFDISK5 ASMDISK1 ASMDISK2 ASMDISK3 ASMDISK4 ASMDISK6 ASMDISK7 ASMDISK8
update: As OpenWorld nears, details of Oracle 11g R2 database emerge and are suppressed | 1Z1-050 Real Questions and VCE Practice Test
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Oracle Certification - The Last Word on OCP for Oracle8i | killexams.com 1Z1-050 Real Questions and VCE Practice Test
Somebody has to say it, so it may as well be me. It is not too late to pursue the Oracle8i Certified Professional Database Administrator certification. If this is something you want to do and you are relatively new to Oracle and you have not started yet, today (this was published at the end of June 2004) is the day you need to start studying--even if you are an old hand at Oracle. I will lay out a short background about why the certification process has taken a beating as of late, why becoming certified is a desirable goal, and a recommendation of what you can do to get certified in a relatively inexpensive and efficient manner.
A Short Background
Like other certifications, and as alluded to in previous articles, the fame and glamour of earning the Oracle Certified Professional (OCP) designation is, well, somewhat lacking. Why has the glamour worn thin? Start by looking at what Oracle's website has to say about being certified: Oracle Certified Professionals have proven skills managing a large-scale database or developing robust applications that are deployed enterprise-wide. That sounds impressive, but it reminds me of a line from the movie Independence Day (when the Secretary of Defense responds to the President's denial about the existence of aliens and UFO's at Area 51). "Uh, excuse me, Mr. President, but that's not entirely accurate." No doubt, some OCP's have proven skills doing the aforementioned, but many do not. The somewhat overstated selling of what being certified "guarantees," combined with the proliferation of brain dump and cheat sheet websites, and combined with the fact that (and you are going to be somewhat guilty of this)
people with practically no experience can become certified, have all contributed to the decrease in stature.
Why Getting Certified is a Good Thing
On the other hand, the fact that you (the same one just mentioned) can pass the exams does, to a large degree, guarantee familiarity with Oracle database administration. New doctors do not know everything; that is why they have internships. New lawyers do not know everything; that is why many of them work as clerks (that's clerking for a prominent judge, not clerking in the HR department). A new pilot (depending on the program) does not immediately start off as a captain; that's why there are flight engineers and co-pilots. Newly certified and (new to Oracle) DBAs do not (no surprise here) start off managing large-scale databases and enterprise-wide applications; that is why there are junior DBAs. The point is this: you have to start somewhere, and getting certified gives you a boost in knowledge and familiarity, so why not take advantage of a learning program that bestows a credential upon you at the end.
At the risk of ruffling some feathers, there are some experienced DBAs who have shunned the certification for one or more of the following selfish reasons: fear of failure, fear of being exposed (the negative connotations associated with failing one or more exam areas; "So, Mr. DBA, what is it exactly that you do know?"), or laziness ("Sure hope this certification thing dies out pretty soon or I may have to do some extra work."). Others have chosen to forego certification for reasons ranging from lack of time (over three years now?) to a personal bias against certifications in general. The fact of the matter is certifications are here to stay. Let a certification help you get the interview, and from there you can talk up or sell your experience. How could it possibly hurt you to be certified?
A Certification Road Map
Count on spending between 10 and 20 hours per week for four weeks (before or after work, weekends, whenever) preparing for each exam. After you have taken an exam or two, you can "calibrate" your study efforts accordingly. Here are four items you can use to be certified.
1) A copy of Oracle8i. Oracle8i Enterprise Edition (8.1.7) is still available for download at OTN (http://otn.oracle.com/software/products/oracle8i/index.html). If you use 9i, you will have to translate a few items, but that's not a show stopper.
2) A set of third party study guides or exam prep books. You can use the Sybex or Exam Cram series. Each series has its pros and cons, supporters and detractors. If you purchase the Sybex series, you have two options: buy each of the three books for around $75 (two of the books each have two exam areas in them), or buy the one combined book for around $55.
Coverage of RMAN in Sybex's Backup and Recovery material is somewhat weak, so you may want to supplement your studying of this topic by using Oracle's documentation or another book. It is a small portion of the overall exam, so if you feel good about the rest of B&R, you can afford to miss several RMAN questions. See http://www.bookpool.com for good prices and great service.
When using the Sybex books, take the end of chapter quizzes. If you can consistently score 80% on the quizzes, you will be adequately prepared for the real exam. If there is a list shown in a chapter (e.g., Oracle's tuning methodology), you can count on one or more questions about the list. If there is a summary of V$ views and dba/all/user_whatever tables, you can count on questions about these views and tables. Most examples are shown using UNIX, but that really does not matter. What is important is the command syntax.
3) The source material for the exams. If you can obtain a copy of Oracle's ILT books (the ones issued to students in the instructor-led courses) from a friend or via private purchase, you will have THE source material for the Prometric-administered exam questions. Regardless of whether or not you can obtain the ILT books, you can and should get the test content checklists from Oracle's website (http://www.oracle.com/education/lang/fr/certification/objectives/index.html?dba8i_tcc.html).
4) A test prep engine. If you are on a less restrictive budget and can afford extra, buy the Self Test Software exam packs for the 8i DBA track. You can buy the CD version, download the CD material, or "rent" the software and use it online (it is generally good for 30 days). If you buy the exams separately, it will cost you more. As a special offer to readers of this article, Self Test Software is offering a 30% discount on any of the 8i exams, including the 8i DBA bundle. Use this link to take advantage of the offer (the discount will be applied when you checkout, and the offer is good until the end of the year): http://www.selftestsoftware.com/bpc/?p=Oracle8isc0604_mtc&dt=1&d=6050&t=1
An unstated fifth item is the set of five exam vouchers you have to purchase (http://www.2test.com, sign up for Oracle, select a test center, and select a date and time). If your company is in the Oracle Partner Program, you pay slightly more than $80 compared to the full price of $125. As of this writing, the OTN20 promotion code may or may not be in effect (it provides a 20% discount).
There is sufficient time remaining to become 8i certified. If you start now, you will be able to finish with some time to spare. Remember, if you fail an exam, you have to wait 30 days before retaking that particular exam. You do not need to max an exam (good for you if you do). Your goal is to pass on the first attempt and not spend an inordinate amount of time preparing. Which exams are the hardest? I have seen people complain about each exam topic, so there is no definite answer to this question.
If you forego this opportunity to certify with Oracle8i, you and your pocketbook may deeply regret it later if you want to be certified because of the ILT requirement for someone starting from scratch with Oracle9i. For less than the cost of attending an Oracle University course for one day, you can easily afford to buy everything (books and STS software) you need to prepare for the five Oracle8i exams. That's it. We're done. No more talk about Oracle8i certification.
P.S. When you are finished taking the 8i exams, jump on the 9i upgrade. Take advantage of the study habits and test-taking skills you have developed over the past few months. STS also offers exam preparation for the 8i to 9i upgrade exam.
Top 20 Big Data Certifications for 2018 | killexams.com 1Z1-050 Real Questions and VCE Practice Test
The term Big Data reflects a very real growing trend. By 2020, every human will be generating 1.7 MB per second. That will add up to 44 trillion GB, according to IDC. Contributing to the total are some 40,000 Google search queries per second, more than 30 million Facebook postings and almost 3 million videos per minute generated by millions of smart phones and billions of Internet of Things (IoT) devices.
The number of big data certifications is mushrooming, too, though not quite at the same pace. These qualifications come from vendors, educational institutions, and independent or industry bodies. They are in great demand.
But those wishing to augment their skill set should look carefully before they leap. Within the big data sector are dozens of specialties. These include big data system administration, Hadoop, analytics, data science, big data storage/security and general Business Intelligence (BI) certs that include big data. Further, vendor platforms can often determine what would be the best credentials to help the individual to get ahead in his or her career.
Bill Reynolds, an analyst at Foote Partners, said the growth of the IoT is fueling more demand for big data skills, particularly in analytics disciplines.“Predictive data and analytics are now considered a backbone of rapidly growing IoT,” he said. “This skillset is particularly valuable since right now there is a shortage of people with big data talents.”
He noted hotspots such as Apache Hadoop, a Java-based open source software framework used for storage and processing of distributed storage of large data sets. Additional hotspots include HDFS, Hbase, MapReduce, Flume, Oozie, Hive, Pig, HBase, YARN, NoSQL, NewSQL, Apache Spark and machine learning.
This list of big data certifications covers many of the options out there. But there are many more besides. They are delivered in a variety of ways: at vendor or college campuses, trade shows, online and sometimes trainers can be sent to your site.
Independent Big Data Certifications
Certified Analytics Professional
If you want vendor independence as you are not tied to a specific analytics platform, Certified Analytics Professional (CAP) may be for you. This training helps you solve analytic problems, build models, implement analytics in the enterprise, and model lifecycle management.
PGP in Big Data Analytics and OptimizationFormerly known as Certificate in Engineering Excellence Big Data Analytics and Optimization (CPEE), the International School of Engineering (INSOFE) has decided to rename it PHP though fails to spell out what the new acronym means. The course appears largely the same, dealing with big data using R, Hadoop, Map Reduce, Hive, Pig, Spark and Sqoop, as well as statistics, modeling, machine learning data mining, and other areas of analytics. It is aimed at students in India and has a classroom format.
University Big Data Certifications
Certification of Professional Achievement in Data Sciences
Columbia University’s Certification of Professional Achievement in Data Sciences (CPADS) prepares students by developing foundational data science skills. Requirements include an undergraduate degree, and a grounding in calculus, linear algebra and computer programming. It gets involved heavily in probability & statistics, machine learning, and data visualization. It is available in class and online.
Mining Massive Data Sets Graduate Certificate
This certification is offered through the Stanford Center for Professional Development. To take it, you should already be a software engineer, statistician, predictive modeler, data miner or analytics professional. To earn the cert, you have to complete four courses: Social and Information Network Analysis, Machine Learning, Mining Massive Data Sets, and Information Retrieval and Web Search. It typically takes a year or two to complete.
Certificate in Analytics: Optimizing Big Data
The Certificate in Analytics: Optimizing Big Data is on offer from the Professional & Continuing Studies unit of the University of Delaware. It deals importing data for analysis, graphical and data analysis, modeling, assessing data variability and more. Students have to complete four modules: Analytics Basics, Big Data Tools, Process Control and Capability, and an individual project. It is suitable for business, marketing and operations managers, as well as data analysts.
Cornell Data Science Certification
Developed by faculty from Cornell University’s SC Johnson College of Business, data science certificates are available in data analytics, data analytics 360 and data-driven marketing.
Vendor Big Data Certifications
SAP Hana Certification
SAP Hana is all about in-memory analytics. Various courses exist to become a trained application specialist using SAP HANA. The SAP Certified Application Specialist - SAP BW powered by HANA SPS12 (Edition 2016)" certification exam, for example, deals with implementing and modeling SAP BW on SAP HANA. Candidates must complete In order to be eligible to take this exam one of several SAP courses.
AWS Certified Big Data – Specialty
This exam tests your technical expertise in designing and implementing AWS services to derive value from data. To become an Amazon Big Data Specialist, you have to hold at least one cert from the Amazon collection: Solutions Architect, DevOps Engineer, Develop, Cloud Practitioner or SysOps Administrator.
Micro Focus Vertica
Since Micro Focus took over Vertica from HPE, it offers training courses such as Vertica Essentials, Descriptive Analytics, Performance Tuning and Database Administration. These are key courses for those working in organizations invested in the Vertica platform.
MCSE: Data Management and Analytics
The Microsoft Certified Systems Engineer (MCSE) line up continues to be popular. It includes MCSE certs for Business Applications, Cloud Platform and Infrastructure, Data Management and Analytics, Mobility and Productivity. Being Microsoft programs, they focus on Azure, SQL Server and other Microsoft tools. The Data Management and Analytics cert encompasses Microsoft BI and analytics platforms, deploying enterprise databases, running SQL Server systems in cloud environments, how to operate big data in the Azure cloud or on premise, and more. Those pursuing this course set themselves up for careers as database analysts/designers and business intelligence analysts. Options include first pursuing a Microsoft Certified Solutions Associate (MCSA) in either SQL Server 2012/2014, or SQL 2016 Database Administration, Database Development, BI Development, Machine Learning, BI Reporting or Data Engineering with Azure. Once you complete this training, you take exams to earn an MCSA: Data Management and
Introduction to R for Data Science
R has become a major in data science and statistics. Offered by Revolution Analytics (now part of Microsoft), this big data training provides expertise in using the R statistical language for advanced analytics. It includes strategic data analysis, lifecycle analysis, basic analytics theory and modeling. This course is part of the Microsoft Professional Program Certificate in Data Science.
Cloudera Certified Professional
Like Microsoft, Cloudera has assembled a large collection of certifications for big data that fall under the Cloudera Certified Professional (CCP) label. Cloudera Certified Professional Data Engineer provides the skills to develop reliable, autonomous, scalable data pipelines that result in optimized data sets for a variety of workloads. Similar to Microsoft, this training is aimed at those dedicated to Cloudera environments. You first take a Cloudera Certified Associate (CCA) course. Options include CCA Spark and Hadoop Developer, CCA Data Analyst and CCA Administrator. Once you have your CCA, you can then take part in the CCP program.
EMC Data Science and Big Data Analytics Certifications
EMC is another one with a portfolio of big data credentials. To become a certified Data Scientist, you have to complete a Data Science and Big Data Analytics course, as well as an Advanced Methods in Data Science and Big Data Analytics course. This training covers areas such as big data, analytic methods, MapReduce, Hadoop, analyzing unstructured data, Pig, Hive, HBase, natural language processing, social network analysis, simulation, random forests, multinomial logistic regression, and data visualization.
SAS Academy for Data Science
Through the SAS Academy for Data Science at its campus in Cary, NC, students master big data management, advanced analytics, machine learning, data visualization and text analytics, along with communication techniques. They can earn three different certifications. SAS Certified Data Scientist is the most challenging. It is comprised of five exams and four complete credentials. The data scientist credential requires SAS Big Data Professional and the SAS Advanced Analytics Professional certifications. But to earn a SAS Certified Big Data Professional cert, you must have good enough programming skills to deal with data management, data quality, and visual data exploration. Like most vendor-oriented programs, this one is centered around SAS tools – in this case SAS BI and analytics tools
MongoDB Certified Developer Associate
The open source MongoDB has become a very popular NoSQL database due to its ability to manage loosely structured and unstructured data. Not surprisingly, certifications in this field are in demand. MongoDB Certified Developer Associate is an exam intended for individuals with knowledge of the fundamentals of designing and building applications using MongoDB. It is aimed mainly at software engineers who already understand MongoDB fundamentals and have developed applications using MongoDB. There are preparation training courses available, too, for developers of Java Node.js and .NET.
Oracle Business Intelligence Foundation Suite 11g Certified Implementation Specialist
It’s hard to pick just one cert from the Oracle arsenal but here goes. Oracle Business Intelligence Foundation Suite 11g Certified Implementation Specialist is for users of the Oracle Business Intelligence Suite. It deals with dashboards, queries, configuration of software, metadata repositories, security settings and BI management. The company recommends several additional courses to prepare for this exam related to Oracle BI including a boot camp.
To become a Hortonworks Certified Professional, you need to earn at least one of the following: Hadoop Certified Developer, Hadoop Certified Apache Spark, Hadoop Certified Java Developer, Hadoop Certified Administrator, Hortonworks Certified Associate, or Hortonworks Data Flow Certified NiFI Architect. Those completing these courses become skilled in the design, development, and management of Hadoop big data environments.
MapR Certified Hadoop Developer
MapR is another player in the Hadoop big data space. This cert requires at least two years of Java development experience. This training deals with designing and developing MapReduce programs in Java. This exam covers writing MapReduce programs, using MapReduce API, and managing, monitoring and testing MapReduce programs and workflows.
IBM Certified Data Engineer – Big Data
This is a tough one that trains a data engineer to apply technologies to solve big data problems and build large-scale data processing systems. Those taking the test should already understand the data layer, cluster management, networking, interfaces, data modeling, and many other skills. The training is focused on software platforms such as BigInsights, BigSQL, Hadoop and NoSQL.
Google Analytics Academy
This one is a little different from many of the others. It is free and it is centered solely on the intricacies of Google Analytics. But this platform is becoming so pervasive that a good knowledge of it should help in career advancement. Google offers courses for beginners, as well as advanced features such as data collection, processing, configuration, complex analysis and how to use Google Analytics in marketing. In addition, there are higher level courses available on Google Analytics 360, Ecommerce analytics and Google Tag Manager fundamentals.
Oracle Database 11g: New Features for DBAs and Developers | killexams.com 1Z1-050 Real Questions and VCE Practice Test
Sam R. Alapati, Charles Kim
Publisher Apress ISBN 978-1-59059-910-5 RRP $44.99 Reviewed by Elias Pimenidis MBCS CITP Score 9 out of 10
Oracle Database 11g If an experienced Oracle professional is looking for a good supporting book to help them transfer their applications to the Oracle 11g environment, this is a very good starting point.
It is not the 'missing manual', nor is it a quick fix reference guide. The book simply provides a well compiled set of chapters that guides an experienced database administrator or an Oracle developer through the new features.
It does so by highlighting key differences from previous versions of Oracle, offering useful tips and small samples of code at places where they appear to be most useful.
It starts off with the most important installation phase guiding the reader through various features, culminating to much desired chapters on application development and data warehousing.
A reader cannot expect to uncover every single feature and secret of Oracle 11g in the 600 pages of this book, but can confidently rely on it providing a first level of reference manual when getting accustomed to the new environment. It saves time browsing through voluminous and often repetitive official manuals, while maintaining a complete list of key topics desirable to the database professional.
It could also prove a good reference manual for academia where both staff and students would use it to enhance prior knowledge and as a means of exploring and exploiting the advanced features of Oracle 11g.
Overall this is very good value for money, especially for a technical manual.
Further information: Apress
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