Oracle On Linux | dbazone

Useful UNIX command for oracle dba

Posted on September 4th, 2010 in Oracle on Linux ,

1).To find the top 10 larger files in the Directory $ls -lrt | awk ‘{print $5,$9}’ | sort -nr head | xargs ls -lrt 2) To find the access and Modification details of a file $istat *This command is available for AIX only 3).To remove file which are older then say 7 days $find . [...]

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Configuring Kernel Parameters for Oracle database server

Posted on June 29th, 2010 in Oracle on Linux , ,

Impacts of  kernel parameter on oracle server ? On SGA(Shared Global area) on oracle server Impacts on the total number of users and files in the database Impacts the number of users and the ability to use some optional features. To see all kernel parameters value on your system . execute the following command. su [...]

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Monitoring background Jobs on UNIX systems

Posted on February 6th, 2010 in Oracle on Linux ,

To monitor background jobs on UNIX, you can use the following commands : jobs ps jobs command jobs command will list all the jobs running in the background as follows: [1]  – 12427 Running              test.pl [2]  + 12540 Stopped            myprog.pl The value within “[]” is the job number. By this number you can control our [...]

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Controling jobs on UNIX systems

Posted on February 6th, 2010 in Oracle on Linux , ,

UNIX  job monitoring and control facilities allows you to monitor the jobs executed on background and bring the jobs on foreground . Here I like to  described different command used to control your jobs on background as well as foreground. Commands to control your jobs on UNIX systems jobs -  This command check the status [...]

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Background jobs on Unix impact on System Performance

Posted on February 6th, 2010 in Oracle on Linux , , , ,

Is your background jobs on Unix impact on System Performance? Yes, but it depends upon the priority of the job and how much RAM they require to run. Large jobs like  you are downloading a huge file from the web, can consume immense amount of RAM which can be very painful for your system performance [...]

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Kill Oracle process from UNIX server

Posted on December 25th, 2009 in Oracle on Linux ,

In some scenarios , my database may be hung and as a DBA ,I have terminate all Oracle processes associated with my hung database. Steps to kill oracle process and release memory associated by oracle server 1. Kill all Oracle processes associated with the ORACLE_SID Executing following command we can check all oracle process associated [...]

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Killing Oracle Sessions

Posted on December 21st, 2009 in Oracle on Linux

There are different ways to kill oracle sessions From  SQL*PLUS From  UNIX From  Windows Killing Oracle Session from SQL*PLUS Executing  ALTER SYSTEM KILL SESSION command from SQL*PLUS prompt , we can kill oracle session. Before going to kill oracle session , we have to identify those using the following DDL statement. SELECT  sid, serial#, osuser, [...]

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