:
#
# $Id: dbstart.sh.pp 11-may-2005.18:18:07 vikrkuma Exp $ 
# Copyright (c) 1991, 2005, Oracle. All rights reserved.  
#

###################################
# 
# usage: dbstart
#
# This script is used to start ORACLE from /etc/rc(.local).
# It should ONLY be executed as part of the system boot procedure.
#
# This script will start all databases listed in the oratab file
# whose third field is a "Y".  If the third field is set to "Y" and
# there is no ORACLE_SID for an entry (the first field is a *),
# then this script will ignore that entry.
#
# This script requires that ASM ORACLE_SID's start with a +, and 
# that non-ASM instance ORACLE_SID's do not start with a +.
#
# If ASM instances are to be started with this script, it cannot
# be used inside an rc*.d directory, and should be invoked from
# rc.local only. Otherwise, the CSS service may not be available
# yet, and this script will block init from completing the boot
# cycle.
#
# Note:
# Use ORACLE_TRACE=T for tracing this script.
#
# The progress log for each instance bringup plus Error and Warning message[s]
# are logged in file $ORACLE_HOME/startup.log. The error messages related to 
# instance bringup are also logged to syslog (system log module).
# The Listener log is located at $ORACLE_HOME_LISTNER/listener.log
# 
# To configure:
# 1) Set ORATAB:
#    On Solaris 
#      ORATAB=/var/opt/oracle/oratab
#    All other UNIX platforms
#      ORATAB=/etc/oratab
#
# 2) Update $ORATAB/oratab with Database Instances that need to be started up.
#    Entries are of the form:
#    $ORACLE_SID:$ORACLE_HOME:<N|Y>:
#    An example entry:
#    main:/usr/lib/oracle/emagent_10g:Y
#
# 3) Set ORACLE_HOME_LISTNER
#    Set this to enable auto startup for Oracle Net Listener.
#    The script uses this find the binary to start Net Listener.
#
#    Also, if the listener name is not the default name LISTENER, you must
#    specify the listener name in the stop and start commands: 
#    $ORACLE_HOME/bin/lsnrctl {start|stop} listener_name
#
#####################################

LOGMSG="logger -puser.alert -s "

trap 'exit' 1 2 3

# for script tracing
case $ORACLE_TRACE in
    T) set -x ;;
esac
    
# Set path if path not set (if called from /etc/rc)
case $PATH in
    "") PATH=/bin:/usr/bin:/etc
        export PATH ;;
esac

# Save LD_LIBRARY_PATH
SAVE_LLP=$LD_LIBRARY_PATH

# Set this to bring up Oracle Net Listener
ORACLE_HOME_LISTNER=/opt/oracle/product/10.2.0
if [ ! $ORACLE_HOME_LISTNER ] ; then
  echo "ORACLE_HOME_LISTNER is not SET, unable to auto-start Oracle Net Listener"
else
  LOG=$ORACLE_HOME_LISTNER/listener.log

  # Start Oracle Net Listener
  if [ -f $ORACLE_HOME_LISTNER/bin/tnslsnr ] ; then
    echo "$0: Starting Oracle Net Listener" >> $LOG 2>&1
    $ORACLE_HOME_LISTNER/bin/lsnrctl start >> $LOG 2>&1 &
    export VER10LIST=`$ORACLE_HOME_LISTNER/bin/lsnrctl version | grep "LSNRCTL for " | cut -d' ' -f5 | cut -d'.' -f1`
  else
    echo "Failed to auto-start Oracle Net Listene using $ORACLE_HOME_LISTNER/bin/tnslsnr"
  fi
fi

# Set this in accordance with the platform
ORATAB=/var/opt/oracle/oratab
if [ ! $ORATAB ] ; then
  echo "Set ORATAB to dir where oratab file is located"
  exit 1;
fi

# Checks Version Mismatch between Listener and Database Instance.
# A version 10 listener is required for an Oracle Database 10g database.
# Previous versions of the listener are not supported for use with an Oracle
# Database 10g database. However, it is possible to use a version 10 listener
# with previous versions of the Oracle database.
checkversionmismatch() {
  if [ $VER10LIST ] ; then
    VER10INST=`sqlplus -V | grep "Release " | cut -d' ' -f3 | cut -d'.' -f1`
    case $VER10INST in
      "10")
      if [ $VER10LIST != "10" ] ; then
        $LOGMSG "Warning: Version 10 listener is required for Oracle Database 10g"
        $LOGMSG "Version $VER10LIST for Listener is NOT supported with Database version $VER10INST"
        $LOGMSG "Restart Oracle Net Listener using an alternate ORACLE_HOME_LISTNER: lsnrctl start"
      fi
      ;;
      *) ;;
    esac
  fi
}

# Starts a Database Instance
startinst() {
  # Called programs use same database ID
  export ORACLE_SID

  # Put $ORACLE_HOME/bin into PATH and export.
  PATH=$ORACLE_HOME/bin:/bin:/usr/bin:/etc ; export PATH
  # add for bug # 652997
  LD_LIBRARY_PATH=${SAVE_LLP}:${ORACLE_HOME}/lib ; export LD_LIBRARY_PATH
  PFILE=${ORACLE_HOME}/dbs/init${ORACLE_SID}.ora
  SPFILE=${ORACLE_HOME}/dbs/spfile${ORACLE_SID}.ora
  SPFILE1=${ORACLE_HOME}/dbs/spfile.ora

  echo ""
  echo "$0: Starting up database \"$ORACLE_SID\""
  date
  echo ""

  checkversionmismatch

  # See if it is a V6 or V7 database
  VERSION=undef
  if [ -f $ORACLE_HOME/bin/sqldba ] ; then
    SQLDBA=sqldba
    VERSION=`$ORACLE_HOME/bin/sqldba command=exit | awk '
      /SQL\*DBA: (Release|Version)/ {split($3, V, ".") ;
      print V[1]}'`
    case $VERSION in
      "6") ;;
      *) VERSION="internal" ;;
    esac
  else
    if [ -f $ORACLE_HOME/bin/svrmgrl ] ; then
      SQLDBA=svrmgrl
      VERSION="internal"
    else
      SQLDBA="sqlplus /nolog"
    fi
  fi

  STATUS=1
  if [ -f $ORACLE_HOME/dbs/sgadef${ORACLE_SID}.dbf ] ; then
    STATUS="-1"
  fi
  if [ -f $ORACLE_HOME/dbs/sgadef${ORACLE_SID}.ora ] ; then
    STATUS="-1"
  fi
  pmon=`ps -ef | egrep pmon_$ORACLE_SID  | grep -v grep`
  if [ "$pmon" != "" ]; 
  then
    STATUS="-1"
    $LOGMSG "Warning: ${INST} \"${ORACLE_SID}\" already started."
  fi

  if test $STATUS -eq -1 ; then
    $LOGMSG "Warning: ${INST} \"${ORACLE_SID}\" possibly left running when system went down (system crash?)."
    $LOGMSG "Action: Notify Database Administrator."
    case $VERSION in
      "6")  sqldba "command=shutdown abort" ;;
      "internal")  $SQLDBA $args <<EOF
connect internal
shutdown abort
EOF
        ;;
      *)  $SQLDBA $args <<EOF
connect / as sysdba
shutdown abort
quit
EOF
        ;;
    esac

    if test $? -eq 0 ; then
      STATUS=1
    else
      $LOGMSG "Error: ${INST} \"${ORACLE_SID}\" NOT started."
    fi
  fi

  if test $STATUS -eq 1 ; then
    if [ -f $SPFILE -o -f $SPFILE1 -o -f $PFILE ] ; then
      case $VERSION in
        "6")  sqldba command=startup ;;
        "internal")  $SQLDBA <<EOF 
connect internal
startup
EOF
          ;;
        *)  $SQLDBA <<EOF 
connect / as sysdba
startup
quit
EOF
          ;;
      esac

      if test $? -eq 0 ; then
        echo "" 
        echo "$0: ${INST} \"${ORACLE_SID}\" warm started." 
      else
        $LOGMSG "" 
        $LOGMSG "Error: ${INST} \"${ORACLE_SID}\" NOT started." 
      fi
    else
      $LOGMSG "" 
      $LOGMSG "Can't find init file for ${INST} \"${ORACLE_SID}\"." 
      $LOGMSG "Error: ${INST} \"${ORACLE_SID}\" NOT started." 
    fi
  fi
}

# Starts an ASM Instance
startasminst() {
  # Called programs use same database ID
  export ORACLE_SID
  ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -`
  # Called scripts use same home directory
  export ORACLE_HOME

  # For ASM instances, we have a dependency on the CSS service.
  # Wait here for it to become available before instance startup.

  # Is the 10g install intact? Are all necessary binaries present?
  if [ ! -f $ORACLE_HOME/bin/crsctl ]; then
    $LOGMSG "$ORACLE_HOME/bin/crsctl not found when attempting to start"
    $LOGMSG "  ASM instance $ORACLE_SID."

  else 
    COUNT=0
    $ORACLE_HOME/bin/crsctl check css
    RC=$?
    while [ "$RC" != "0" ];
    do
    COUNT=$((COUNT+1))
    if [ $COUNT = 15 ] ; then
      # 15 tries with 20 sec interval => 5 minutes timeout
      $LOGMSG "Timed out waiting to start ASM instance $ORACLE_SID"         
      $LOGMSG "  CSS service is NOT available."
      exit $COUNT
    fi
    $LOGMSG "Waiting for Oracle CSS service to be available before starting "
    $LOGMSG " ASM instance $ORACLE_SID. Wait $COUNT."

    sleep 20
    $ORACLE_HOME/bin/crsctl check css
    RC=$?
    done
  fi
  startinst
}

# Start of dbstartup script
#
# Loop for every entry in oratab file and and try to start
# that ORACLE.
#
# ASM instances need to be started before 'Database instances'
# ASM instance is identified with '+' prefix in ORACLE_SID
# Following loop brings up ASM instance[s]

cat $ORATAB | while read LINE
do
case $LINE in
  \#*)                ;;        #comment-line in oratab
  *)
  # Proceed only if last field is 'Y'.
  # Entries whose last field is not Y or N are not DB entry, ignore them.
  if [ "`echo $LINE | awk -F: '{print $NF}' -`" = "Y" ] ; then
    ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -`
    if [ "$ORACLE_SID" = '*' ] ; then
      # same as NULL SID - ignore this entry
      ORACLE_SID=""
      continue
    fi
    # For ASM instances, we have a dependency on the CSS service.
    # Wait here for it to become available before instance startup.
    if [ `echo $ORACLE_SID | cut -b 1` = '+' ]; then
      INST="ASM instance"
      ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -`
      # Called scripts use same home directory
      export ORACLE_HOME
      # file for logging script's output
      LOG=$ORACLE_HOME/startup.log
      touch $LOG
      chmod a+r $LOG
      echo "Processing $INST \"$ORACLE_SID\": log file $ORACLE_HOME/startup.log"
      startasminst >> $LOG 2>&1
    fi
  fi
  ;;
esac
done

# exit if there was any trouble bringing up ASM instance[s]
if [ "$?" != "0" ] ; then
  exit 2
fi

#
# Following loop brings up 'Database instances'
#
cat $ORATAB | while read LINE
do
case $LINE in
  \#*)                ;;        #comment-line in oratab
  *)
  # Proceed only if last field is 'Y'.
  # Entries whose last field is not Y or N are not DB entry, ignore them.
  if [ "`echo $LINE | awk -F: '{print $NF}' -`" = "Y" ] ; then
    ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -`
    if [ "$ORACLE_SID" = '*' ] ; then
      # same as NULL SID - ignore this entry
      ORACLE_SID=""
      continue
    fi
    # For ASM instances, we have a dependency on the CSS service.
    # Wait here for it to become available before instance startup.
    if [ `echo $ORACLE_SID | cut -b 1` != '+' ]; then
      INST="Database instance"
      ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -`
      # Called scripts use same home directory
      export ORACLE_HOME
      # file for logging script's output
      LOG=$ORACLE_HOME/startup.log
      touch $LOG
      chmod a+r $LOG
      echo "Processing $INST \"$ORACLE_SID\": log file $ORACLE_HOME/startup.log"
      startinst >> $LOG 2>&1
    fi
  fi
  ;;
esac
done
