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1Z0-047 exam Dumps Source : Oracle Database SQL Expert

Test Code : 1Z0-047
Test cognomen : Oracle Database SQL Expert
Vendor cognomen : Oracle
: 278 true Questions

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Oracle Oracle Database SQL Expert

What Makes Oracle self sufficient Database in fact ‘self sufficient’ | killexams.com true Questions and Pass4sure dumps

Oracle Database is the world’s most prevalent commercial enterprise database, and this 12 months’s addition of self sufficient operating capabilities to the cloud version of Oracle Database is one of the most vital advances within the database’s history. What does it suggest for a database to exist “independent?” Let’s examine under the covers of Oracle self sustaining Database to demonstrate just a few of the ways it does that.

Oracle

Oracle autonomous Database is a fully managed cloud provider. fancy every cloud services, the database runs on servers in cloud statistics centers—in this case, on hardware known as Oracle Exadata Database computing device that’s principally designed and tuned for high-efficiency, excessive-availability workloads. The tightly controlled and optimized hardware allows for one of the crucial self reliant performance we’ll talk about almost immediately.

whereas the independent capacity of Oracle self sufficient Database is new, it builds on ratings of automation features that Oracle has been constructing into its Oracle database software and the Exadata database hardware for years. The dreams of the autonomous functions are twofold: First, to decrease operating fees via cutting back costly and tedious manual administration, and second, to multiply provider levels via automation and fewer human blunders.

right here are only a few examples of how the capabilities in Oracle self reliant Database trade the video game for database administrators (DBAs), releasing them from mundane tasks and permitting them to center of attention on larger-value work.

1. a brand unusual Database Cloud Infrastructure

developing a brand unusual gigantic-scale database may remove weeks if unusual hardware needs to exist procured and establish in in a consumer’s information core. With self reliant Database, a unusual database can moreover exist spun up in seconds or minutes (even very huge databases), and it doesn’t require a highly technical skilled fancy a DBA.

unlike a company’s on-premises information center, where the database utility may exist operating on any hardware, any operating equipment, any classification of community and disk connectivity, and any classification of gadget drivers, self reliant Database is designed in particular for the Oracle Exadata hardware platform. Oracle takes talents of that standardization to leverage full manage over the runtime environment.

“Oracle has built the area’s first authentic database cloud infrastructure. a brand unusual autonomous Database is provisioned from a pre-present pool of Exadata methods—already preconfigured for enterprise-grade performance, availability, and safety,” says George Lumpkin, vp of product management at Oracle. “This inventive database cloud allows for for unusual databases to exist hastily created, and for present databases to scale up and down instantly, with out downtime.”

2. continuous Database Tuning for choicest efficiency

Let’s mug it: In most IT departments, tuning a database is often a one-time assignment, Run by using the DBAs when the database is first populated. The database’s performance is optimized for the most everyday operations on the time the database is first created, and infrequently simplest touched after that to triage inescapable performance considerations. Years later, the database may additionally Have grown 10 instances higher, and the commerce clients may exist requesting entirely unusual sets of queries—but no one has re-examined the common efficiency-tuning approach.

“The workload of a reform analytics device alterations over time,” says Lumpkin, “however no person goes in and retunes the database. In different words, that database on year three truly relies on how someone set it up on year one.”

Enter Oracle autonomous Database, which builds on the intelligence designed into efficiency-tuning wizards that Oracle has provided for years. formerly, the wizards offered counsel to DBAs, who may choose to settle for the suggestions (and then create alterations) or ignore it. within the self reliant database cloud, subsequent-generation models of these wizards are running continuously—and making the vital alterations. In other phrases, the database is being retuned daily.

“self sufficient Database is making exhaust of tuning optimum practices of the gadget consistently,” says Lumpkin. “So the database server doesn’t net out of tune since it adjusts to the statistics volumes because the device grows. These are the computer researching capabilities and adaptive algorithms we’ve been pile in the database for rather a yoke of years. They remove it to another stage with the self sufficient database.”

3. Patches, enhancements, and safety Fixes Are applied automatically, with out Downtime

self reliant Database applies patches and updates immediately. And greater importantly, these patches befall on-line, while the database keeps running. by way of leveraging applied sciences such as reform application Clusters and Multitenant, the cloud provider ensures that its databases are at everyone times available birthright through patching. This now not simplest minimizes downtime, however additionally makes inescapable that each and every customer’s database is at everyone times running on the latest updates.

The largest single judgement behind protection breaches is systems that were now not up-to-date with protection patches. a huge improvement of computerized patching is consequent improvements in security. If a protection flaw or vulnerability is discovered, Oracle independent Database will capitalize from the repair as soon as that fix has been developed and demonstrated by way of Oracle.

contrast this to on-site application installations, where there can exist a prolonged extend while customers are notified, patches dispensed, and then labored into each and every organization’s own protection cycle—which might remove days or weeks. That’s a epoch everyone over which the device is probably recumbent to assault or facts loss. With the self sustaining carrier, Oracle takes impregnate of imposing the safety fixes—and rolls them out without any downtime skilled with the aid of the client.

The “self reliant” in Oracle autonomous Database does a superb deal. a few of it's conceptually fundamental, fancy immediately making exhaust of patches and fixes, with out desiring to immediate down the provider, with a view to maximize efficiency, performance, and protection. a Part of the self sufficient algorithm’s job is to simplify the DBA’s job, with the aid of automating initiatives that could remove hours and reworking them into methods that remove seconds. And a Part of it is to optimize the database so that it constantly tunes its performance, and makes it viable for DBAs to focus on mission-essential initiatives.

are attempting that with any other database application.


cannot log in to database from SQL*Plus | killexams.com true Questions and Pass4sure dumps

I Have establish in Oracle 9.0 on windows 2000 server. I created a database, and it allowed me to log in to SQL*Plus earlier than restarting. once I restarted, the services indicates that the database has everyone started, but SQL*Plus is not enabling me to log in. It offers the following errors:

ORA-1034 - Oracle not attainable ORA-27101 - shared reminiscence realm doesn't exist

i tried a lot of how you can fix this, but i used to exist not a success. I even Have checked my Listener.Ora and Tnsnames.Ora info, and set the ambiance variables, ORACLE_HOME and ORACLE_SID, and everything looks nice. please wait on me in figuring this out.

The subsequent region to appear is in your Alert Log. it is viable for the functions to exist operating but for the database to exist down. The reverse isn't authentic. The functions need to exist working if the database is working.

It feels fancy the carrier began, which attempts to nascence the database. The database isn't everyone started in any other case you shouldn't Have bought the ORA-1034 error.

Your Alert Log will comprise designated guidance about why the database could not exist everyone started. create sure you note the database try and delivery, adopted by using some oversight messages. there are many the explanation why the database did not birth, so you'll Have to narrow it down some greater from counsel in the Alert Log. The Alert Log is in the listing special by means of your BACKGROUND_DUMP_DEST parameter.


the way to Fail Over and Reinstate Oracle Database on Oracle Cloud | killexams.com true Questions and Pass4sure dumps

through Joel Pérez and Skant Gupta

listed here, they are able to reveal you the way to fail over and reinstate Oracle Database in the cloud.

note: to create exhaust of the mode presented listed here, you want two Oracle Cloud database circumstances. also, the procedure presented turned into carried out on Oracle Database 11g; however, the process should still work on later releases akin to Oracle Database 12c unencumber 1 and free up 2.

Create the primary Database instance
  • Log in to your Oracle Cloud services account. Then travel to the Oracle Database Cloud carrier web page and create a brand unusual carrier:

    - For carrier identify enter simple.- From the carrier degree listing, select Oracle Database Cloud carrier.- From the Metering Frequency list, opt for something frequency is applicable to your environment.- From the utility free up record, select Oracle Database 11g unencumber 2.- From the software version checklist, choose commercial enterprise version.- From the Database category list, choose Single instance.

    Then click on next to proceed.

    Figure 1 Creating a unusual service

    determine 1. developing a unusual provider

  • in the service details reveal, carry out birthright here:

    - For DB cognomen (SID), enter ORCL.- Set an administrative password of your option and corroborate the password (this will exist your sys password).- For Usable Database Storage (GB), enter 25.- From the Compute shape listing, choose OC3 -1 OCPU, 7.5GB RAM (here's the naked minimum required).- For SSH Public Key, enter rsa-key-20170111.pub.

    Then click subsequent to proceed.

    Figure 2 Specifying the service details

    figure 2. Specifying the carrier details

  • eventually, assessment the configuration and click Create to create your fundamental cloud database.

    Figure 3 Creating primary cloud db instance

    figure three. developing the fundamental cloud database illustration

    After a yoke of minutes, the primary cloud database instance has been created effectively.

    Figure 4 Primary database created

    determine 4. The fundamental database has been created

  • click the carrier identify (basic) to open the leading page of the database.

    Figure 5 Main page of primary database

    figure 5. main page of the basic database

  • before trying to hook up with the fundamental database instance on the cloud machine, you must permit the dblistener entry rule. carry out birthright here:

    a. Open the database carrier and select access suggestions from the menu.

    Figure 6 Selecting the Access Rules item

    determine 6. settling on the access guidelines item

      b. For the ora_p2_dblistener rule, opt for allow from the movements menu.

    Figure 7 Enabling the ora_p2_dblistener

    determine 7. Enabling the ora_p2_dblistener rule

  • Create the Standby Database illustration
  • Log in to your Oracle Cloud services account. Then travel to the Oracle Database Cloud provider page and create a unusual carrier:

    - For service cognomen enter Standby.- From the service plane listing, choose Oracle Database Cloud carrier.- From the Metering Frequency list, opt for something frequency is acceptable to your atmosphere.- From the utility release record, opt for Oracle Database 11g unlock 2.- From the software version checklist, select commerce edition.- From the Database category record, opt for Single illustration.

    Then click subsequent to proceed.

    Figure 8 Creating another unusual service

    determine 8. creating yet another unusual service

  • within the service details screen, carry out birthright here:

    - For DB identify (SID), enter ORCL.- Set an administrative password of your election and ensure the password (this will exist your sys password).- For Usable Database Storage (GB), enter 25.- From the Compute shape list, opt for OC3 -1 OCPU, 7.5GB RAM (here is the naked minimal required).- For SSH Public Key, enter rsa-key-20170111.pub.

    click next to continue.

    word: This dummy database should exist dropped later.

    Figure 9 Specifying service details

    determine 9. Specifying the service particulars

  • finally, verify the configuration and click Create to create your standby cloud database.

    Figure 10 Creating standby DB instance

    determine 10. developing the standby cloud database example

    After a few minutes, the standby cloud database instance has been created correctly.

    Figure 11 standby database created

    determine 11. The standby database has been created

  • click on the service identify (Standby) to open the leading web page of the database.

    Figure 12 Main page standby DB

    determine 12. main web page of the standby database

  • before trying to connect with the standby instance on the cloud machine, you need to allow the dblistener entry rule. carry out birthright here:

    a. Open the database service and choose entry rules from the menu.

    Figure 13 Selecting the Access Rules

    determine 13. opting for the access rules merchandise

    b. For the ora_p2_dblistener rule, select permit from the movements menu.

    Figure 14 Enabling the ora_p2_dblistener

    determine 14. Enabling the ora_p2_dblistener rule

  • Open two distinctive cases of the PuTTY executable and fix to both the machines the usage of SSH.

    Figure 15 Connecting to both machines using PuTTY

    figure 15. Connecting to both machines using PuTTY

    notice: In the following figures, the fundamental illustration is shown with a black historical past and the standby instance is proven with a yellow background.

  • investigate the host cognomen and the pmon system on each server.

    Figure 16 Checking the host names

    figure sixteen. Checking the host names and pmon tactics

  • Drop the default standby database.

    Figure 17 Dropping the standby database

    determine 17. shedding the standby database

    within the subsequent steps, you'll re-create the standby database manually

  • Configure the static registration of the standby instance within the listener.ora file.

    also, because you'll should configure the information shield broking service in an upcoming step, add a static entry for its command-line interface (DGMGRL) within the listener.ora file on both the fundamental and standby servers. (The facts remove impregnate of broker is a allotted management framework provided by way of Oracle Database, commerce version.)

    SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = STBY_DGMGRL) (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1) (SID_NAME = STBY) ) (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = STBY) (ORACLE_HOME = /u01/app/oracle/product/eleven.2.0/dbhome_1) (SID_NAME = STBY) ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (tackle = (PROTOCOL = TCP)(HOST = Standby.compute-aeetisalat78358.oraclecloud.inner)(PORT = 1521)) (handle = (PROTOCOL = IPC)(KEY = EXTPROC1521)) ) )

    Figure 18 Configuring the listener

    figure 18. Configuring the listener.ora information

  • Now, restart the listener.

    Figure 19 Restarting the listener

    determine 19. Restarting the listener

  • Configure the tnsnames.ora information with the general public IP addresses of the primary and standby servers. as soon as the addresses are configured, they may moreover exist considered on the console.

    Figure 20 Verifying the configuration

    figure 20. Verifying the configuration of the tnsnames.ora files

  • be inescapable the tnsping command works on each side.

    Figure 21 Running the tnsping command

    figure 21. working the tnsping command

  • Create the pfile and password file on the standby machine. also, create the essential directories for the standby database.

    Figure 22 Creating directories

    figure 22. creating directories on the standby machine

  • On the simple desktop, set up here parameters for developing the standby database: ALTER gadget SET LOG_ARCHIVE_CONFIG = 'DG_CONFIG=(ORCL,STBY)'SCOPE=each; ALTER device SET LOG_ARCHIVE_DEST_1='place=/u01/app/oracle/archive VALID_FOR=(ONLINE_LOGFILES, ALL_ROLES)DB_UNIQUE_NAME=ORCL'; ALTER equipment SET LOG_ARCHIVE_DEST_2='carrier=STBY LGWR ASYNC verify VALID_FOR=(ONLINE_LOGFILES, PRIMARY_ROLE) DB_UNIQUE_NAME=STBY'; ALTER equipment SET FAL_SERVER =STBY SCOPE=each; ALTER equipment SET STANDBY_FILE_MANAGEMENT = AUTO SCOPE = each; ALTER DATABASE compel LOGGING;
  • birth the standby database using the nomount election with the pfile clause. Then from the simple computing device, exhaust the Oracle recuperation supervisor (Oracle RMAN) rman target command to examine each connections.

    Figure 23 Starting the standby database

    determine 23. nascence the standby database and checking the connections

  • From the fundamental laptop, exhaust the Oracle RMAN replica command to configure the standby database example. replica goal DATABASE FOR STANDBY FROM lively DATABASEDORECOVER SPFILE set control_files='/u02/app/oracle/oradata/STBY/control01.ctl','/u03/app/oracle/fast_recovery_area/STBY/control02.ctl' SET db_unique_name='STBY' comment 'Is standby' SET LOG_ARCHIVE_DEST_2='carrier=ORCLASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)DB_UNIQUE_NAME=ORCL' SET FAL_SERVER='ORCL' remark 'Is primary' set db_recovery_file_dest='/u01/app/' set db_file_name_convert='/ORCL/','/STBY/' set log_file_name_convert='/ORCL/','/STBY/' NOFILENAMECHECK;

    After some time, the standby database is created and working within the installed state.

    Figure 24 Standby database running

    figure 24. Standby database running in the set up state

  • Now, open the standby database in examine-most effective mode and launch the recovery. additionally determine that the actual database is functional.

    On the simple:

    create desk check as select * from dict;

    On the standby:

    alter database open; ALTER device SET LOG_ARCHIVE_DEST_1='area=/u01/app/oracle/archive VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=STBY'; ALTER system SET LOG_ARCHIVE_DEST_2= 'carrier=ORCL LGWR ASYNC corroborate VALID_FOR=(ONLINE_LOGFILES, PRIMARY_ROLE) DB_UNIQUE_NAME=ORCL' scope=both; get better managed standby database the usage of current logfile disconnect;

    Figure 25 Opening the standby database

    determine 25. Opening the standby database and nascence the recovery

  • Manually Fail Over to the Standby Database without Flashback expertise Enabled

    Failover is the mode of activating the standby database in case the production (basic) database is deformed as a way to reduce the risk of records loss. It is not reversible. When the failover procedure is enabled, the standby database is switched to feature because the primary database and moreover you would ought to re-create the standby database.

    In a worst-case situation when the statistics shield simple database isn't purchasable for construction, which you can spark off the standby database to exist the basic construction database by way of performing birthright here steps.

  • From the secondary database, Run the following SQL statements: recover managed standby database cancel; recuperate managed standby database conclude; alter database set off standby database; startup drive

    Figure 26 Activating the standby database

    determine 26. Activating the standby database

  • because they carry out not Have flashback know-how enabled on each side, manually re-create the veteran fundamental database because the physical standby database from the scratch.

    Figure 27 Re-creating veteran primary database

    figure 27. Manually re-creating the ancient fundamental database

  • beginning the ancient basic database in the "nomount" state. Then reinstate it by using running the Oracle RMAN replica command from the secondary computing device: duplicate target database for standby from dynamic database nofilenamecheck;

    Figure 28 Starting veteran primary database

    determine 28. nascence the ancient simple database and reinstating it

    After some time, the ancient basic database is re-created because the standby database and it's working in the mounted state.

    Figure 29 primary database mounted state

    figure 29. historical basic database running in the mounted state

  • Now, open the standby database in study-only mode and start the healing. additionally check that the actual database is practical.

    On the simple:

    SQL> alter database open study only; SQL> recoup managed standby database the exhaust of current logfile disconnect; SQL> select signify number(*) from examine; count(*) ---------- 0 SQL> opt for identify,db_unique_name,database_role,open_mode from v$database; identify DB_UNIQUE_NAME DATABASE_ROLE OPEN_MODE --------- ------------------------------ ---------------- -------------------- ORCL ORCL physical STANDBY study best WITH follow

    On the standby:

    SQL> choose count(*) from verify; count(*) ---------- 2666 SQL> delete from examine; 2666 rows deleted. SQL> commit; Commit comprehensive. SQL> choose count(*) from check; count(*) ---------- 0

    Figure 30 Opening the standby database

    figure 30. Opening the standby database and nascence the recuperation

  •   Use Flashback know-how to Reinstate a Standby Database After a Failover with the information preserve broking service

    Hardware crashes Have develop into very regular these days. it is why creating a cataclysm recovery (DR) configuration for data shield is awfully profitable for every database, inspite of its measurement. however the size of the database defines the device a DBA can exhaust to re-create the primary database and deploy the DR configuration.

    If database is reasonably small, doing an smooth "bloodless reproduction" using the Oracle RMAN replica command is first rate ample. youngsters, within the case of huge information warehouses or facts marts, doing that takes too lengthy. hence, it's advised to reinstate standby databases by using the Oracle Flashback Database ability of Oracle Database.

  • On the basic computer, mount the database, configure flashback retention, nascence the Oracle Flashback Database ability, and open the database by using working here statements: SHUTDOWN instant; STARTUP MOUNT; ALTER gadget SET DB_RECOVERY_FILE_DEST_SIZE=2g scope=both; ALTER system SET DB_RECOVERY_FILE_DEST='/u01/app/' scope=each; ALTER equipment SET DB_FLASHBACK_RETENTION_TARGET=240; ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN;
  • On the standby machine, cancel the recuperation, mount the database, configure flashback retention, birth the Oracle Flashback Database potential, open the database in read-best mode, and launch the recovery manner by means of running birthright here statements: ALTER DATABASE ameliorate MANAGED STANDBY DATABASE CANCEL; STARTUP drive MOUNT; alter equipment set DB_RECOVERY_FILE_DEST_SIZE=2g scope=each; alter gadget set db_recovery_file_dest='/u01/app/' scope=both; ALTER equipment SET DB_FLASHBACK_RETENTION_TARGET=240; ALTER device FLASHBACK ON; ALTER DATABASE OPEN study most effective; recuperate managed standby database the usage of present logfile disconnect from session;

    Figure 31 Results of starting flashback

    determine 31. results of nascence the flashback know-how on both machines

    subsequent, they will configure the records shield broker.

    here are the basic and standby database server particulars:

    basic server: simple.compute-aeetisalat78358.oraclecloud.internalDatabase: ORCL

    Standby server: StandBy-1.compute-aeetisalat78358.oraclecloud.internalDatabase: STBY1 

  • On both the primary and the standby database server, delivery the information guard broker system:

    a. enable the broking service process with the aid of environment the value of the parameter DG_BROKER_START to authentic.

    ALTER equipment SET DG_BROKER_START=proper SCOPE=both;

    b. ensure that the listener.ora file on each servers has a static entry for the DGMGRL command-line interface. (This was brought prior in step 9.)

    c. On the primary server, create the facts examine after broker configuration via working the statements:

    DGMGRL> CREATE CONFIGURATION 'Cloud DG' as basic DATABASE IS'ORCL' connectIDENTIFIER IS 'ORCL'; Configuration "CloudDG" created with basic database "ORCL" DGMGRL> pomp CONFIGURATION Configuration - CloudDG protection Mode :MaxPerformance individuals: ORCL - fundamental database quick-delivery Failover:DISABLED Configuration popularity: DISABLED

    d. Add the standby database to the configuration via operating birthright here statements:

    DGMGRL> ADD DATABASE 'STBY' as connect IDENTIFIER IS 'STBY'; Database "STBY" brought DGMGRL> exhibit CONFIGURATION Configuration - CloudDG insurance device Mode :MaxPerformance Databases: ORCL - basic database STBY - actual standby database speedy-birth Failover:DISABLED Configuration popularity: DISABLED

      e. permit the configuration by means of running birthright here statements:

    DGMGRL> allow CONFIGURATION Enabled. DGMGRL> demonstrate CONFIGURATION Configuration - CloudDG insurance policy Mode: MaxPerformance Databases: ORCL - simple database STBY - physical standby database fast-delivery Failover: DISABLED Configuration repute: SUCCESS

    Figure 32 Results of enabling broker

    figure 32. effects of enabling the broker

  • Now, to proceed this simulation, crash the fundamental database.

    Figure 33 State of the primary database

    determine 33. State of the fundamental database after is it crashed

  • Now, function a failover to the standby server by way of working the following command: DGMGRL> failover to 'STBY' Performing failover NOW, please wait… Failover succeeded, unusual primary is "STBY"

    Figure 34 Performing a failover

    determine 34. Performing a failover

    word: Now the standby database becomes the fundamental database.

  • Reinstate the database.

    as a result of they Have Oracle Flashback Database already configured, you can exhaust birthright here command to reinstate database without restoring the backup:

    DGMGRL> reinstate database 'ORCL';

    Figure 35 Reinstating the database

    determine 35. Reinstating the database

    Failing which they would Have been required to configure flashback database with a purpose to reinstate the database immediately. As determine 35 shows, the reinstate project failed as a result of flashback is not configured to reinstate automatically across the Reinstate Database <DB name> command.

  • Now they will stream again to the historic configuration. execute a switchover operation, as proven in determine 36.

    Figure 36 Performing a switchover operation

    determine 36. Performing a switchover operation

  • Conclusion

    So now you comprehend that it is awfully handy to execute a failover over the cloud with and devoid of using Oracle Flashback Database.

    We hope this article is valuable and they invite you to proceed reading their subsequent publications focused on Oracle Cloud.

    about the Authors

    Joel Pérez is an expert DBA and Oracle ACE Director and an Oracle certified master in Oracle highest Availability structure, Oracle Database cloud administration, and Oracle Database 11g and12c. He has over 17 years of true-world taste with Oracle technology and specializes in the design and implementation of solutions for the cloud, elevated availability (HA), catastrophe healing, improvements, replication, and most areas related to Oracle Database. at present, he works as chief technologist and architect for cloud technologies, Oracle maximum Availability structure, and HA at Yunhe Enmo (Beijing) know-how Co., Ltd. in Beijing, China.

    Skant Gupta is an Oracle licensed Cloud knowledgeable in Oracle Database 12c, an Oracle certified expert in Oracle true application Clusters (Oracle RAC) in Oracle Database 11g, and an Oracle certified professional in Oracle Database 10g, 11g, and 12c. He works at Vodafone expertise in the UK and previously labored as a senior DBA at Etisalat in Dubai. He has six years of adventure with a lot of Oracle applied sciences, focusing in particular on cloud, database, and elevated availability options, Oracle WebLogic Suite, and Oracle GoldenGate. He has introduced at several Oracle person companies worldwide, most currently within the US, the United Arab Emirates, and India.

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    Oracle SQL Certification: 1Z0-051 or 1Z0-047? | killexams.com true questions and Pass4sure dumps

    Written by Matthew Morris Published: 11 May 2012

    Exams 1Z0-047: Oracle Database SQL Expert and 1Z0-051: Oracle Database 11g: SQL Fundamentals I both answer the SQL requirement on the Oracle 11g DBA and 11g Developer tracks. Which one should you take? Oracle Certification Expert Matthew Morris has the answer.

    On the Oracle Certification forum, these two exams generate a steady stream of questions from candidates asking which would exist better for them to take.  In this article, I argue the two tests, their similarities and differences and why you might want to remove one over the other.

    Either of these tests satisfies the SQL requirement for the "Oracle Database 11g Administrator Certified Professional" track and moreover the "Oracle PL/SQL Developer Certified Associate" track.  Candidates following either the DBA or developer tracks generally remove one of these two tests.  I’ll note briefly that at this time there is a third option, the much older “1Z0-007: Introduction to Oracle9i SQL”.  This test was written against Oracle 9i as the cognomen suggests.  It has not been updated for newer releases, and will likely exist retired in the not-too-distant future.  It is not a test that I would recommend pursuing.  Both 1Z0-047 and 1Z0-051 are geared towards SQL against an Oracle 11G database, and the test objectives for the two on the Oracle Education site Have a remarkable deal of commonality.  It's not surprising that there is confusion over which to take.

    Some of the disagreement between the two is due to the content.  The residuum is the plane of vicissitude of the exams and the degree to which you must exist familiar with Oracle SQL.  The SQL Fundamentals exam is built around forty-one topics listed on the Oracle Education site.  The topics aren't 'simple', but they certainly felicitous the definition of 'fundamentals'.  They are the basics that Oracle SQL developers really should exist familiar with.  The SQL Expert topics embrace thirty-eight pulled directly from SQL Fundamentals, plus an additional thirty-eight beyond that.  The majority of the exam questions approach from the second set, but anything from the first set is impartial game.  This lonesome would bid you that it's a much more complicated exam to study for.  In addition, a impartial number of the ‘Expert’ topics are on subjects that even experienced SQL developers exhaust only on rare occasions.

    The differences in the two tests travel deeper than that.  The SQL Fundamentals exam is fairly straightforward in its questions and answers.  For a given question, retort A may exist obviously reform because answers B, C, and D Have SQL errors that create them obviously invalid (assuming you know your basic SQL).  The exhibits are simple; the SQL fairly short; and the questions largely fact-based.  By contrast, in the SQL Expert exam, the questions tend to exist much trickier.  The wrong answers aren't quite as obviously wrong.  They are likely to embrace SQL statements that will execute with no error, but without returning data that answers the question.  You Have to exist able to contemplate fancy the Oracle SQL parser to determine specifically what a given SQL statement will carry out when executed.  The SQL and associated exhibits are more complicated and more of the questions are experience-based.

    There is definitely a capitalize in taking the SQL Expert exam instead of Fundamentals.  You will not only fulfill the SQL requirement for the DBA and developer tracks but moreover net an immediate standalone certification (Oracle Database: SQL Certified Expert).  However, you moreover Run a considerably greater risk of failing the exam.  For this reason, I would counsel that candidates who are relatively unusual to SQL pursue the SQL Fundamentals exam.

    Some candidates making this decision are experienced SQL developers who are well familiar with most or everyone of the topics in the SQL Fundamentals exam.  For these individuals, I would recommend skipping to 1Z0-047.  There is no capitalize to passing the lower-level test if you Have sufficient information to pass the Expert exam.  Whichever you choose, excellent luck on the test.

    matthew-morrisAbout the Author Matthew Morris is an experienced DBA and developer. He holds Oracle DBA Certifications for releases 7, 8i, 9i, 10G and 11G; and Oracle Expert Certifications for SQL and Application Express; and is an Oracle PL/SQL Developer Certified Associate. He is the author of several Oracle certification guides. His Web site, www.oraclecertificationprep.com, is dedicated to providing links to resources for Oracle certification preparation.

    RDX's October Webinar to Focus on Cloud Database Migration Impacts | killexams.com true questions and Pass4sure dumps

    (PRLEAP.COM) PITTSBURGH –October 15, 2018 – RDX, the leader of remote data infrastructure services, will exist presenting Cloud DB Systems' Hidden repercussion on IT as its October RDX Insights Series webinar on Thursday, October 25th, at 2 PM ET/11 AM PT. Hosted by RDX VP of Delivery Strategies and Technologies, Chris Foot, the webinar will focus on the common challenges associated with switching to a cloud database management solution, key factors to remove into consideration before the migration and best practices for ensuring a smooth transition.

    While cloud database management systems can exist cost-effective and efficient options for many, migrating to a cloud environment will change the way an organization's IT department operates. "The repercussion cloud systems Have on organizations is far greater than most shops realize," said Chris. "The cloud is an architecture that requires changes to organizational roles and responsibilities, staff training, policies and procedures, application design, change management, security/auditing and in-house support toolsets. We'll exist discussing these changes during the webinar while utilizing Amazon and Microsoft environments as examples throughout the presentation so that attendees can gain a better understanding of how to best prepare themselves for a cloud migration."

    "RDX has migrated dozens of on-premises databases to the cloud," said RDX Chief Revenue Officer, Rob Brown. "Through their experiences, we've erudite how to best overcome the common challenges organizations encounter when they're preparing for and undergoing a cloud migration. They want to not only wait on attendees determine which cloud database management system is best for their commerce needs, but they moreover want to wait on them Have a trouble-free migration process."

    To register for Cloud DB Systems' Hidden repercussion on IT, please visit RDX's registration page. Attendance is free, but space is limited.

    About RDX [Remote DBA Experts]

    Founded in 1994, RDX is one of the largest independent providers of database infrastructure and cloud management services in North America. The Company provides 24x7, 100% US-based managed services to hundreds of clients, both on premise and in the cloud. RDX supports a wide gain of cloud environments including Microsoft Azure, Amazon AWS, and Oracle DB Cloud; database environments including Oracle, SQL Server, MYSQL, PostgreSQL, DB2 and MongoDB; and operating systems including Windows and everyone major UNIX/Linux offerings. For over two decades, RDX has helped hundreds of organizations lower support costs while increasing data infrastructure performance and availability. RDX's expert staff of highly-trained professionals is backed by a monitoring and support infrastructure that has been continuously improved and enhanced throughout its history. More information is available at https://www.rdx.com.


    Expert finds 'stupid' vulnerabilities in Oracle 11g | killexams.com true questions and Pass4sure dumps

    The latest version of Oracle Corp.'s flagship database offers better security than earlier versions, but development errors Have left vulnerabilities that attackers can exhaust to steal data, an expert warned Monday.

    "Oracle made expansive progress with 11g, but some of the vulnerabilities I've create so far in 11g are stupid programming errors," said Alexander Kornbrust, managing director of Red Database Security GmbH, during an interview at the Hack In The Box (HITB) Security Conference 2007 in Kuala Lumpur, Malaysia.

    "Oracle must educate their own development team because they should normally avoid these simple security vulnerabilities," Kornbrust said.

    Oracle executives were not immediately available for comment.

    Kornbrust, who helps large companies audit the security of their Oracle databases, examined the software and create SQL injection vulnerabilities, which allow attackers to Run malicious code. He moreover uncovered a way to circumvent the auditing capability in 11g and other versions of the database, which could undermine a company's compliance efforts.

    While Kornbrust plans to argue some Oracle vulnerabilities at HITB, he has no plans to detail his mode for bypassing the auditing capability until Oracle has fixed the problem.

    Some of the problems that Kornbrust uncovered reflect architectural problems with Oracle's database. In a talk scheduled for later this week, he plans to demonstrate how architectural problems allow attackers to "bypass and avoid" Oracle's latest security tools, including Oracle Database Vault and Oracle Audit Vault.

    The cost and time required to fix a vulnerability in Oracle's database can exist staggering because of the censorious role the software plays in the commerce of large companies, and the wide gain of platforms that Oracle supports, Kornbrust said.

    Citing the instance of one German company that has 8,000 Oracle databases, Kornbrust said rolling out a single patch can require 32,000 hours of labor, or four hours per database. That translates into 60 full-time database administrators and doesn't remove into account the time and expense required for testing the patch on each database, he said.

    Moreover, for each vulnerability that gets patched, Oracle must develop a patch for every version of its database that's supported, with a version of each for every hardware platform and operating system the database runs on. That amounts to around 100 separate patches for every vulnerability, Kornbrust said.

    HITB runs through Sept. 6.



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    References :


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