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分类: LINUX

2008-07-01 17:18:00

#!/bin/bash
#
# Copyright 2003-2004, 2006 Red Hat, Inc.
#
# Author(s):
#     Hardy Merrill
#     Lon Hohberger
#     Michael Moon
#
# This program is Open Source software.  You may modify and/or redistribute
# it persuant to the terms of the Open Software License version 2.1, which
# is available from the following URL and is included herein by reference:
#
#  
#
# chkconfig: 345 99 01
# description: Service script for starting/stopping      \
#              Oracle(R) Application Server software on: \
#   Red Hat Enterprise Linux 2.1 AS  \
#   Red Hat Enterprise Linux 3 AS    \
#   Red Hat Enterprise Linux 3 ES    \
#        Also can start Oracle(R) Database 10g on  \
#          Red Hat Enterprise Linux 4
#
# NOTES:
#
# (1) You can comment out the LOCKFILE declaration below.  This will prevent
# the need for this script to access anything outside of the ORACLE_HOME
# path.
#
# (2) You MUST customize ORACLE_USER, ORACLE_HOME, ORACLE_SID, and
# ORACLE_HOSTNAME to match your installation if not running from within
# rgmanager.
#
# (3) Do NOT place this script in shared storage; place it in ORACLE_USER's
# home directory in non-clustered environments and /usr/share/cluster
# in RHCS4 environments.
#
# Oracle is a registered trademark of Oracle Corporation.
# Oracle9i is a trademark of Oracle Corporation.
# Oracle10g is a trademark of Oracle Corporation.
# All other trademarks are property of their respective owners.
#
. /etc/init.d/functions
#
# Sourcxe stuff from /etc/sysconfig, but this may be overridden if
# this is being called as a cluster resource agent instead.
# . /etc/sysconfig/oracledb
declare SCRIPT="`basename $0`"
declare SCRIPTDIR="`dirname $0`"
[ -n "$OCF_RESKEY_user" ] && ORACLE_USER=$OCF_RESKEY_user
[ -n "$OCF_RESKEY_home" ] && ORACLE_HOME=$OCF_RESKEY_home
[ -n "$OCF_RESKEY_name" ] && ORACLE_SID=$OCF_RESKEY_name
[ -n "$OCF_RESKEY_lockfile" ] && LOCKFILE=$OCF_RESKEY_lockfile
[ -n "$OCF_RESKEY_type" ] && ORACLE_TYPE=$OCF_RESKEY_type
[ -n "$OCF_RESKEY_vhost" ] && ORACLE_HOSTNAME=$OCF_RESKEY_vhost
######################################################
# Customize these to match your Oracle installation. #
######################################################
#
# 1. Oracle user.  Must be the same across all cluster members.  In the event
#    that this script is run by the super-user, it will automatically switch
#    to the Oracle user and restart.  Oracle needs to run as the Oracle
#    user, not as root.
#
#[ -n "$ORACLE_USER" ] || ORACLE_USER=oracle
#
# 2. Oracle home.  This is set up during the installation phase of Oracle.
#    From the perspective of the cluster, this is generally the mount point
#    you intend to use as the mount point for your Oracle Infrastructure
#    service.
#
#[ -n "$ORACLE_HOME" ] || ORACLE_HOME=/mnt/oracle/home
#
# 3. This is your SID.  This is set up during oracle installation as well.
#
#[ -n "$ORACLE_SID" ] || ORACLE_SID=orcl
#
# 4. The oracle user probably doesn't have the permission to write to
# /var/lock/subsys, so use the user's home directory.
#
[ -n "$LOCKFILE" ] || LOCKFILE="/home/$ORACLE_USER/.oracle-ias.lock"
#[ -n "$LOCKFILE" ] || LOCKFILE="$ORACLE_HOME/.oracle-ias.lock"
#[ -n "$LOCKFILE" ] || LOCKFILE="/var/lock/subsys/oracle-ias" # Watch privileges
#
# 5. Type of Oracle Database.  Currently supported: 10g 10g-iAS(untested!)
#
#[ -n "$ORACLE_TYPE" ] || ORACLE_TYPE=10g
#
# 6. Oracle virtual hostname.  This is the hostname you gave Oracle during
#    installation.
#
#[ -n "$ORACLE_HOSTNAME" ] || ORACLE_HOSTNAME=svc0.foo.test.com

###########################################################################
ORACLE_TYPE=`echo $ORACLE_TYPE | tr A-Z a-z`
export ORACLE_USER ORACLE_HOME ORACLE_SID LOCKFILE ORACLE_TYPE
export ORACLE_HOSTNAME

##########################
# Set up paths we'll use.  Not all are used by all the different types of
# Oracle installations
#
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$ORACLE_HOME/opmn/lib
export PATH=$ORACLE_HOME/bin:$ORACLE_HOME/opmn/bin:$ORACLE_HOME/dcm/bin:$PATH
declare -i RESTART_RETRIES=3
declare -r DB_PROCNAMES="pmon"
#declare -r DB_PROCNAMES="pmonXX" # testing
#declare -r DB_PROCNAMES="pmon smon dbw0 lgwr"
declare -r LSNR_PROCNAME="tnslsnr"
#declare -r LSNR_PROCNAME="tnslsnrXX" # testing
#
# The oracle user probably doesn't have the permission to write to
# /var/lock/subsys, so use the user's home directory.
#
declare -r LOCKFILE="/home/$ORACLE_USER/.oracle-ias.lock"
#declare -r LOCKFILE="$ORACLE_HOME/.oracle-ias.lock"
#declare -r LOCKFILE="/var/lock/subsys/oracle-ias" # Watch privileges
##########################################################
# (Hopefully) No user-serviceable parts below this line. #
##########################################################
meta_data()
{
cat <

    1.0
   
Oracle 10g Failover Instance
   

   
Oracle 10g Failover Instance
   

   
        
     
  Instance name (SID) of oracle instance
     

            
  Oracle SID
            

     
        

        
     
  Oracle user name.  This is the user name of the Oracle
  user which the Oracle AS instance runs as.
     

            
  Oracle User Name
            

     
        

        
     
  This is the Oracle (application, not user) home directory.
  This is configured when you install Oracle.
     

            
  Oracle Home Directory
            

     
        

        
     
  This is the Oracle installation type.
  Only "10g" and "10g-ias" are supported, and 10g-ias is
  untested.
     

            
  Oracle Installation Type
            

     
        

        
     
         Virtual Hostname matching the installation hostname of
  Oracle 10g.  Note that during the start/stop of an oracledb
  resource, your hostname will temporarily be changed to
  this hostname.  As such, it is recommended that oracledb
  resources be instanced as part of an exclusive service only.
     

            
  Virtual Hostname
            

     
        

   

   
        

        











   

   

   


EOT
}

#
# "action"-like macro supporting functions
#
faction()
{
echo -n "$1"
shift
$*
if [ $? -eq 0 ]; then
  echo_success
  echo
  return 0
fi
echo_failure
echo
return 1
}

#
# Start Oracle9i (database portion)
#
start_db()
{
declare tmpfile
declare logfile
declare -i rv
tmpfile=/tmp/$SCRIPT-start.$$
logfile=/tmp/$SCRIPT-start.log
#
# Set up our sqlplus script.  Basically, we're trying to
# capture output in the hopes that it's useful in the case
# that something doesn't work properly.
#
echo "startup" > $tmpfile
echo "quit" >> $tmpfile
sqlplus "/ as sysdba" < $tmpfile &> $logfile
rv=$?
# Dump logfile to /var/log/messages
initlog -q -c "cat $logfile"

if [ $rv -ne 0 ]; then
  echo "ORACLE_HOME Incorrectly set?"
  echo "See $logfile for more information."
  return 1
fi
#
# If we see:
# ORA-.....: failure, we failed
#
rm -f $tmpfile
grep -q "failure" $logfile
if [ $? -eq 0 ]; then
  rm -f $tmpfile
  echo "ORACLE_SID Incorrectly set?"
  echo "See $logfile for more information."
  return 1
fi
return 0
}

#
# Stop Oracle9i (database portion)
#
stop_db()
{
declare tmpfile
declare logfile
declare -i rv
tmpfile=/tmp/$SCRIPT-stop.$$
logfile=/tmp/$SCRIPT-stop.log
# Setup for Stop ...
echo "shutdown abort" > $tmpfile
echo "quit" >> $tmpfile
sqlplus "/ as sysdba" < $tmpfile &> $logfile
rv=$?
# Dump logfile to /var/log/messages
initlog -q -c "cat $logfile"

if [ $rv -ne 0 ]; then
  echo "ORACLE_HOME Incorrectly set?"
  echo "See $logfile for more information."
  return 1
fi
#
# If we see 'failure' in the log, we're done.
#
rm -f $tmpfile
grep -q failure $logfile
if [ $? -eq 0 ]; then
  echo_failure
  echo
  echo "Possible reason: ORACLE_SID Incorrectly set."
  echo "See $logfile for more information."
  return 1
fi
return 0
}

#
# Destroy any remaining processes with refs to $ORACLE_HOME
#
force_cleanup()
{
declare pids
declare pid
pids=`ps ax | grep $ORACLE_HOME | grep -v grep | awk '{print $1}'`
initlog -n $SCRIPT -s " Not all Oracle processes exited cleanly, killing"

for pid in $pids; do
  kill -9 $pid
  if [ $? -eq 0 ]; then
   initlog -n $SCRIPT -s "Killed $pid"
  fi
done
return 0
}

#
# Wait for oracle processes to exit.  Time out after 60 seconds
#
exit_idle()
{
declare -i n=0
while ps ax | grep $ORACLE_HOME | grep -q -v grep; do
  if [ $n -ge 90 ]; then
   force_cleanup
   return 0
  fi
  sleep 1
  ((n++))
done
return 0
}

#
# Get database background process status.  Restart it if it failed and
# we have seen the lock file.
#
get_db_status()
{
declare -i subsys_lock=$1
declare -i i=0
declare -i rv=0
declare ora_procname
for procname in $DB_PROCNAMES ; do
  ora_procname="ora_${procname}_${ORACLE_SID}"
  
  status $ora_procname
  if [ $? -eq 0 ] ; then
   # This one's okay; go to the next one.
   continue
  fi
  #
  # We're not supposed to be running, and we are,
  # in fact, not running...
  # XXX only works when monitoring one db process; consider
  # extending in future.
  #
  if [ $subsys_lock -ne 0 ]; then
   return 3
  fi
  for (( i=$RESTART_RETRIES ; i; i-- )) ; do
   # this db process is down - stop and
   # (re)start all ora_XXXX_$ORACLE_SID processes
   initlog -q -n $SCRIPT -s "Restarting Oracle Database..."
   stop_db
   if [ $? != 0 ] ; then
    # stop failed - return 1
    return 1
   fi
   start_db
   if [ $? == 0 ] ; then
    # ora_XXXX_$ORACLE_SID processes started
    # successfully, so break out of the
    # stop/start # 'for' loop
    break
   fi
  done
  if [ $i -eq 0 ]; then
   # stop/start's failed - return 1 (failure)
   return 1
  fi
done
return 0
}

#
# Get the status of the Oracle listener process
#
get_lsnr_status()
{
        declare -i subsys_lock=$1
        declare -i rv

        status $LSNR_PROCNAME
        rv=$?
        if [ $rv == 0 ] ; then
                return 0 # Listener is running fine
        fi

        #
        # We're not supposed to be running, and we are,
        # in fact, not running.  Return 3
        #
        if [ $subsys_lock -ne 0 ]; then
                return 3
        fi

        #
        # Listener is NOT running (but should be) - try to restart
        #
        for (( i=$RESTART_RETRIES ; i; i-- )) ; do

                action "Restarting Oracle listener:" lsnrctl start
                lsnrctl status >& /dev/null
                if [ $? == 0 ] ; then
                        break # Listener was (re)started and is running fine
                fi
        done

        if [ $i -eq 0 ]; then
                # stop/start's failed - return 1 (failure)
                return 1
        fi

        status $LSNR_PROCNAME
        if [ $? != 0 ] ; then
                return 1 # Problem restarting the Listener
        fi
        return 0 # Success restarting the Listener
}


#
# usage: get_opmn_proc_status [process-type]
#
# Get the status of a specific OPMN-managed process.  If process-type
# is not specified, assume the process-type is the same as the ias-component.
# If the lock-file exists (or no lock file is specified), try to restart
# the given process-type if it is not running.
#
get_opmn_proc_status()
{
        declare comp=$1
        declare opmntype=$2
        declare type_pretty
        declare _pid _status
       
        [ -n "$comp" ] || return 1
        if [ -z "$opmntype" ]; then
                opmntype=$comp
        else
                type_pretty=" [$opmntype]"
        fi

        for (( i=$RESTART_RETRIES ; i; i-- )) ; do

                _status=`opmnctl status | grep "^$comp " | grep " $opmntype " | cut -d '|' -f3,4 | sed -e 's/ //g' -e 's/|/ /g'`

                _pid=`echo $_status | cut -f1 -d' '`
                _status=`echo $_status | cut -f2 -d' '`
                if [ "${_status}" == "Alive" ] || [ "${_status}" == "Init" ]; then
                        if [ $i -lt $RESTART_RETRIES ] ; then
                                echo "  $comp$type_pretty restarted"
                        fi
                        echo "  $comp$type_pretty (pid $_pid) is running..."
                        break
                else
                        echo "  $comp$type_pretty is stopped"

                        #
                        # Try to restart it, but don't worry if we fail.  OPMN
                        # is supposed to handle restarting these anyway.
                        #
                        # If it's running and you tell OPMN to "start" it,
                        # you will get an error.
                        #
                        # If it's NOT running and you tell OPMN to "restart"
                        # it, you will also get an error.
                        #
                        opmnctl startproc process-type=$opmntype &> /dev/null
                fi
        done

        if [ $i -eq 0 ]; then
                # restarts failed - return 1 (failure)
                return 1
        fi

        return 0
}


#
# Get the status of the OPMN-managed processes.
#
get_opmn_status()
{
        declare -i subsys_lock=$1
        declare -i ct_errors=0

        opmnctl status &> /dev/null
        if [ $? -eq 2 ]; then
                #
                # OPMN not running??
                #
                echo "opmn is stopped"

                if [ $subsys_lock -eq 0 ]; then
                        #
                        # Don't handle full opmn-restart. XXX
                        #
                        return 1
                fi

                # That's okay, it's not supposed to be!
                return 3
        fi

        #
        # Print out the PIDs for everyone.
        #
        echo "opmn is running..."
        echo "opmn components:"

        #
        # Check the OPMN-managed processes
        #
        get_opmn_proc_status OID || ((ct_errors++))
        get_opmn_proc_status HTTP_Server || ((ct_errors++))
        get_opmn_proc_status OC4J OC4J_SECURITY || ((ct_errors++))

        #
        # One or more OPMN-managed processes failed and could not be
        # restarted.
        #
        if [ $ct_errors -ne 0 ]; then
                return 1
        fi
        return 0
}


#
# Oracle needs the system's hostname to match the VIP.  RHCS needs to not be
# tinkering with the hostname.  Thus, we trick Oracle into believing that the
# hostname is the vhost by overloading gethostname().
#
hostname_hackery()
{
        if [ "`hostname`" = "$ORACLE_HOSTNAME" ]; then
                return 0
        fi

        PRELOADDIR=$ORACLE_HOME

cat > $PRELOADDIR/hostname.c < /*
   Hack to make Oracle 10g work in failover environments
   without adjusting the hostname.
*/
#include
#include
#include
#include
#include

#ifndef ORACLE_HOSTNAME
#define ORACLE_HOSTNAME "$ORACLE_HOSTNAME"
#endif


int
gethostname(char *buf, size_t len)
{
        char *val = ORACLE_HOSTNAME;

        if (!buf || len <= 0) {
                errno = EINVAL;
                return -1;
        }

        memset(buf,0,len);
        if (!strlen(val))
                return 0;

        if (snprintf(buf, len, "%s", val) == len) {
                errno = ENAMETOOLONG;
                return -1;
        }

        return 0;
}
EOT

        if [ -e $PRELOADDIR/hostname.so ]; then
                export LD_PRELOAD=$PRELOADDIR/hostname.so
                return 0
        fi

        action "Creating hostname preload library:" gcc -o $PRELOADDIR/hostname.so $PRELOADDIR/hostname.c -shared -Wall -fPIC || return 1
        rm $PRELOADDIR/hostname.c

        export LD_PRELOAD=$PRELOADDIR/hostname.so
        return 0
}


#
# Helps us keep a running status so we know what our ultimate return
# code will be.  Returns 1 if the $1 and $2 are not equivalent, otherwise
# returns $1.  The return code is meant to be the next $1 when this is
# called, so, for example:
#
# update_status 0   <-- returns 0
# update_status $? 0 <-- returns 0
# update_status $? 3 <-- returns 1 (values different - error condition)
# update_status $? 1 <-- returns 1 (same, but happen to be error state!)
#
# update_status 3
# update_status $? 3 <-- returns 3
#
# (and so forth...)
#
update_status()
{
        declare -i old_status=$1
        declare -i new_status=$2

        if [ -z "$2" ]; then
                return $old_status
        fi

        if [ $old_status -ne $new_status ]; then
                return 1
        fi

        return $old_status
}


#
# Print an error message to the user and exit.
#
oops()
{
        echo "Please configure this script ($0) to"
        echo "match your installation."
        echo
        echo "    $1 failed validation checks."
        exit 1
}


#
# Do some validation on the user-configurable stuff at the beginning of the
# script.
#
validation_checks()
{
        #
        # If the oracle user doesn't exist, we're done.
        #
        [ -n "$ORACLE_USER" ] || oops ORACLE_USER
        id -u $ORACLE_USER > /dev/null || oops ORACLE_USER
        id -g $ORACLE_USER > /dev/null || oops ORACLE_USER

        #
        # If the oracle home isn't a directory, we're done
        #
        [ -n "$ORACLE_HOME" ] || oops ORACLE_HOME
        #[ -d "$ORACLE_HOME" ] || oops ORACLE_HOME

        #
        # If the oracle SID is NULL, we're done
        #
        [ -n "$ORACLE_SID" ] || oops ORACLE_SID

        #
        # If we don't know the type, we're done
        #
        [ "$ORACLE_TYPE" = "10g" ] || [ "$ORACLE_TYPE" = "10g-ias" ] || oops ORACLE_TYPE

        #
        # If the hostname is zero-length, fix it
        #
        [ -n "$ORACLE_HOSTNAME" ] || ORACLE_HOSTNAME=`hostname`

        #
        # Super user? Automatically change UID and exec as oracle user.
        # Oracle needs to be run as the Oracle user, not root!
        #
        if [ "`id -u`" = "0" ]; then
                echo "Restarting $0 as $ORACLE_USER."
                exec sudo -u $ORACLE_USER $0 $*
        fi

        #
        # If we're not root and not the Oracle user, we're done.
        #
        [ "`id -u`" = "`id -u $ORACLE_USER`" ] || exit 1
        [ "`id -g`" = "`id -g $ORACLE_USER`" ] || exit 1

        #
        # Go home.
        #
        cd $ORACLE_HOME

        return 0
}


#
# Start Oracle9i Application Server Infrastructure
#
start_oracle()
{
        faction "Starting Oracle Database:" start_db || return 1
        action "Starting Oracle Listener:" lsnrctl start || return 1

        if [ "$ORACLE_TYPE" = "10g" ]; then
                action "Starting iSQL*Plus:" isqlplusctl start || return 1
                action "Starting Oracle EM DB Console:" emctl start dbconsole || return 1
        elif [ "$ORACLE_TYPE" = "10g-ias" ]; then
                action "Starting Oracle EM:" emctl start em || return 1
                action "Starting iAS Infrastructure:" opmnctl startall || return 1
        fi

        if [ -n "$LOCKFILE" ]; then
                touch $LOCKFILE
        fi
        return 0
}


#
# Stop Oracle9i Application Server Infrastructure
#
stop_oracle()
{
        if ! [ -e "$ORACLE_HOME/bin/lsnrctl" ]; then
                echo "Oracle Listener Control is not available"
                echo "    ($ORACLE_HOME not mounted?)"
                return 0
        fi

        if [ "$ORACLE_TYPE" = "10g" ]; then
                action "Stopping Oracle EM DB Console:" emctl stop dbconsole || return 1
                action "Stopping iSQL*Plus:" isqlplusctl stop || return 1
        elif [ "$ORACLE_TYPE" = "10g-ias" ]; then
                action "Stopping iAS Infrastructure:" opmnctl stopall || return 1
                action "Stopping Oracle EM:" emctl stop em || return 1
        fi

        faction "Stopping Oracle Database:" stop_db || return 1
        action "Stopping Oracle Listener:" lsnrctl stop
        faction "Waiting for all Oracle processes to exit:" exit_idle

        if [ $? -ne 0 ]; then
                echo "WARNING: Not all Oracle processes exited cleanly"
        fi

        if [ -n "$LOCKFILE" ]; then
                rm -f $LOCKFILE
        fi
        return 0
}


#
# Find and display the status of iAS infrastructure.
#
# This has three parts:
# (1) Oracle database itself
# (2) Oracle listener process
# (3) OPMN and OPMN-managed processes
#
# - If all are (cleanly) down, we return 3.  In order for this to happen,
# $LOCKFILE must not exist.  In this case, we try and restart certain parts
# of the service - as this may be running in a clustered environment.
#
# - If some but not all are running (and, if $LOCKFILE exists, we could not
# restart the failed portions), we return 1 (ERROR)
#
# - If all are running, return 0.  In the "all-running" case, we recreate
# $LOCKFILE if it does not exist.
#
status_oracle()
{
        declare -i subsys_lock=1
        declare -i last
        declare -i depth=$1

        #
        # Check for lock file.  Crude and rudimentary, but it works
        #
        if [ -z "$LOCKFILE" ] || [ -f $LOCKFILE ]; then
                subsys_lock=0
        fi

        # Check database status
        get_db_status $subsys_lock $depth
        update_status $? # Start
        last=$?

        # Check & report listener status
        get_lsnr_status $subsys_lock $depth
        update_status $? $last
        last=$?
       
        if [ "$ORACLE_TYPE" = "10g" ]; then
                # XXX Add isqlplus status check?!
                emctl status dbconsole 2>&1 | grep "is running"
                update_status $? $last
                last=$?
        elif [ "$ORACLE_TYPE" = "10g-ias" ]; then
                # Check & report opmn / opmn-managed process status
                get_opmn_status $subsys_lock $depth
                update_status $? $last
                last=$?
        fi

        #
        # No lock file, but everything's running.  Put the lock
        # file back. XXX - this kosher?
        #
        if [ $last -eq 0 ] && [ $subsys_lock -ne 0 ]; then
                touch $LOCKFILE
        fi

        return $last
}


########################
# Do some real work... #
########################
if [ "$1" = "meta-data" ]; then
        meta_data
        exit 0
fi

validation_checks $*

hostname_hackery || exit 1

case $1 in
        start)
                start_oracle
                exit $?
                ;;
        stop)
                stop_oracle
                exit $?
                ;;
        status|monitor)
                status_oracle $OCF_CHECK_LEVEL
                exit $?
                ;;
        restart)
                $0 stop || exit $?
                $0 start || exit $?
                exit 0
                ;;
        *)
                echo "usage: $SCRIPT {start|stop|status|restart|meta-data}"
                exit 1
                ;;
esac
exit 0
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