By April Sims
This day DBAs are anticipated to installation and deal with huge databases with caliber carrier and little to no downtime. The DBA’s major concentration is on expanding productiveness and casting off idle redundancy during the firm. notwithstanding, there is not any magic set of top practices or challenging and speedy ideas that DBAs have to stick to, and this may make existence tough. but when DBAs stick to a few uncomplicated ways and most sensible practices, initiatives should be played extra successfully and effectively.This survival consultant deals formerly unwritten underground suggestion for DBAs. the writer presents vast info to light up the place you slot in, and runs via the various projects you might want to be watchful of, largely overlaying ideas to the most typical difficulties encountered via rookies to the area of Oracle databases.The publication will speedy introduce you in your activity duties, in addition to the abilities, and talents had to be winning as a DBA. it is going to assist you to triumph over universal difficulties and proactively hinder mess ups by way of enforcing allotted grid computing-scalable and robust-with the power to redeploy or rearchitect whilst enterprise wishes swap. decrease downtime throughout your online business by way of standardizing undefined, software program, instruments, utilities, instructions, and architectural parts.
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Using an Internet search engine may be another source of information (beware that the information may not be timely, complete, or even accurate), but it is a source you turn to when other more dependable ones aren't productive. When you create a MOS Service Request, don't expect an answer that day unless the severity level and contract agreement dictates that level of support. Oracle Engineer support help may be hours or even days from now. Reach out to the Oracle community for help at the same time you enter a Service Request, which often will get a quicker if not better answer than Oracle support, because these people will have encountered the same problem at some point.
How to Integrate the Shell, SQL*Plus Scripts and PL/SQL in any Permutation? 1] (Excellent document) Usually cron is used for scheduling in Unix and the AT command with Windows. For Oracle utilities that run outside the database (or which must only run when the database is down), Unix shell scripting is best used. A well-written script would parse /etc/oratab for a list of ORACLE_SIDs on a single server for tasks such as parsing log files, consistent backups, exports, dbverify, and RMAN. If you have a solitary database, then DBMS_SCHEDULER can be used with a combination of SQL and PL/SQL integrated with OS commands.
Use the Unix profile and the Oracle-supplied files that set the environment—oraenv, coraenv, and dbhome. See later in this chapter for specific recommendations for these files, ORACLE_SID or just SID (System Identifier). [ 26 ] Chapter 2 7. Identify an instance with the combination of $ORACLE_HOME,$ORACLE_SID and $HOSTNAME, which makes it unique and usually defaults to the database name. 8. Name data files with /mount point/specific_to_data/ORACLE_SID/control. dbf (data files). A personal recommendation includes adding the ORACLE_SID to a data filename.