Wednesday, February 8, 2012

Booting Oracle 11g R2 Database Server on CentOS 6.2

This is a how to autostart the Oracle 11g R2 Database Server on CentOS 6.2. I assume you have done the following:

  1. Install an Oracle-ready CentOS 6.2 Linux box
  2. Install the Oracle 11g R2 Database Server on the CentOS 6.2 Linux box
  3. Configure a network listener for Oracle 11g R2 Database Server on the CentOS 6.2 Linux box
  4. Create a fresh Oracle 11g R2 database on the CentOS 6.2 Linux box 

So, it's time to run the three installed components as Linux daemons. These components are: listener, database and enterprise manager. The main programs concerning the start and stop tasks for these components can be found at $ORACLE_HOME/bin, and they are:

  • listener: lsnrctl {start|stop|...}
  • database: dbstart / dbshut
  • ent. manager: emctl {start|stop|...}


  1. Login as the bozz user (a sudoer)  in the server and create the archive /etc/init.d/oracle with the following content:
  2. #!/bin/bash
    
    # oracle: Start/Stop Oracle Database 11g R2
    #
    # chkconfig: 345 90 10
    # description: The Oracle Database Server is an RDBMS created by Oracle Corporation
    #
    # processname: oracle
    
    . /etc/rc.d/init.d/functions
    
    LOCKFILE=/var/lock/subsys/oracle
    ORACLE_HOME=/opt/app/oracle/product/11.2.0/db_1/
    ORACLE_USER=oracle
    
    case "$1" in
    'start')
       if [ -f $LOCKFILE ]; then
          echo $0 already running.
          exit 1
       fi
       echo -n $"Starting Oracle Database:"
       su - $ORACLE_USER -c "$ORACLE_HOME/bin/lsnrctl start"
       su - $ORACLE_USER -c "$ORACLE_HOME/bin/dbstart $ORACLE_HOME"
       su - $ORACLE_USER -c "$ORACLE_HOME/bin/emctl start dbconsole"
       touch $LOCKFILE
       ;;
    'stop')
       if [ ! -f $LOCKFILE ]; then
          echo $0 already stopping.
          exit 1
       fi
       echo -n $"Stopping Oracle Database:"
       su - $ORACLE_USER -c "$ORACLE_HOME/bin/lsnrctl stop"
       su - $ORACLE_USER -c "$ORACLE_HOME/bin/dbshut $ORACLE_HOME"
       su - $ORACLE_USER -c "$ORACLE_HOME/bin/emctl stop dbconsole"
       rm -f $LOCKFILE
       ;;
    'restart')
       $0 stop
       $0 start
       ;;
    'status')
       if [ -f $LOCKFILE ]; then
          echo $0 started.
          else
          echo $0 stopped.
       fi
       ;;
    *)
       echo "Usage: $0 [start|stop|status]"
       exit 1
    esac
    
    exit 0
    
    
  3. First, ensure that the init.d script can be executed manually:
  4. $ sudo chmod +x /etc/init.d/oracle
    $ sudo /etc/init.d/oracle start 
    
    if so, then stop it:
    $ sudo /etc/init.d/oracle stop
    
  5. Use chkconfig to register the init.d script on runlevels 3, 4 and 5:
    $ sudo chkconfig --add oracle
    
    then verify if is marked as on in the runleves 3, 4 and 5:
    $ chkconfig --list oracle
    oracle             0:off    1:off    2:off    3:on    4:on    5:on    6:off
    
  6. Reboot and enjoy!

257 comments:

  1. Dear Eduardo,

    Thank you so much for the articles about installing Oracle!
    It is really helpful tutorial.
    Thanks again!

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    1. Thanks! Any kind of feedback is appreciated!

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  2. This worked really well for me too. I appreciate your good work.

    ReplyDelete
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    1. Thak you very much! Any kind of feedback will be appreciated!

      Delete
  3. Dear Eduardo,

    This is really wonderful. It helped me a lot...I've been struggling on bringing up Oracle, Weblogic in one Linux machine for a while but always got some problems.

    I really appreciate your great work.

    Thanks.

    ReplyDelete
    Replies
    1. I really appreciate all the feedback. Feel free to send any suggestion and/or improvement.
      Regards
      Ed

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  4. is there a need to modify oratab as well so that this works?
    db01:/usr/oracle/app/product/11.2.0/dbhome_1:Y

    ReplyDelete
    Replies
    1. si es necesario, buena acotaciĆ³n, en el script tampoco es necesario levantar el listener pues este lo hace solo

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