What does this" touch /var/lock/subsys/oracle9i " used for?

Question

touch /var/lock/subsys/oracle9i
this is in oracle auto start scripts.
What does this" touch /var/lock/subsys/oracle9i " used for?
Thanks.

Answer 1

ok,
this touch in dbora is solely used for dbora. The dbora script will later on remove the file after stop database.
sample of dbora
#!/bin/bash
  # chkconfig: 35 99 10   
  # description: Starts and stops Oracle processes
  # Set ORA_HOME to be equivalent to the $ORACLE_HOME
  # from which you wish to execute dbstart and dbshut;
  # Set ORA_OWNER to the user id of the owner of the
  # Oracle database in ORA_HOME.
  ORA_HOME=<Type your ORACLE_HOME in full path here>
  ORA_OWNER=<Type your Oracle account name here>
  case "$1" in
    'start')
       # Start the Oracle databases:
       # The following command assumes that the oracle login
       # will not prompt the user for any values
       su - $ORA_OWNER -c $ORA_HOME/bin/dbstart
       # Start the TNS Listener
       su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl start"
       # Start the Intelligent Agent
       if [ -f $ORA_HOME/bin/agentctl ]; then
          su - $ORA_OWNER -c "$ORA_HOME/bin/agentctl start"
       else
          su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl dbsnmp_start"
       fi
       # Start Management Server
       if [ -f $ORA_HOME/bin/oemctl ]; then
          su - $ORA_OWNER -c "$ORA_HOME/bin/oemctl start oms"
       fi
       # Start HTTP Server
       if [ -f $ORA_HOME/Apache/Apache/bin/apachectl ]; then
          su - $ORA_OWNER -c "$ORA_HOME/Apache/Apache/bin/apachectl start"
       fi
       touch /var/lock/subsys/dbora
    'stop')
       # Stop HTTP Server
       if [ -f $ORA_HOME/Apache/Apache/bin/apachectl ]; then
          su - $ORA_OWNER -c "$ORA_HOME/Apache/Apache/bin/apachectl stop"
       fi
       # Stop Management Server
       if [ -f $ORA_HOME/bin/oemctl ]; then
          su - $ORA_OWNER -c "$ORA_HOME/bin/oemctl stop oms sysman/<password>"
       fi
       # Stop the Intelligent Agent
       if [ -f $ORA_HOME/bin/agentctl ]; then
          su - $ORA_OWNER -c "$ORA_HOME/bin/agentctl stop"
       else
          su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl dbsnmp_stop"
       fi
       # Stop the TNS Listener
       su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl stop"
       # Stop the Oracle databases:
       # The following command assumes that the oracle login
       # will not prompt the user for any values
       su - $ORA_OWNER -c $ORA_HOME/bin/dbshut
       rm -f /var/lock/subsys/dbora
  esac
  # End of script dbora