Shell script to automate diagnostic agent startup

 

Following  shell script  will be helpful to automate the startup of diagnostic  agent in case it is stopped.

 

You can schedule  the script  as a  crontab entry under the OS user that runs diagnostic agent.  The script will perform the status check and  if the diagnostic agent is found stopped it will be automatically started by the script.  You will be able to overcome the manual intervention needed.

 

 

Cron entry for  scheduling the script in every 5 minutes :   */5 * * * * /home/dadadm/check_diagnostic_agent.sh

 

In my case , DAD is the SID of the diagnostic agent. So I  have installed the script under the OS user dadadm.

 

The script is not intended to replace standard SAP process of starting the agent during OS startup.

If you observe that the agent  does not start up  during OS startup, check the following

 

1) whether  sapstartsrv service for the diagnostic agent has been configured  in sapservices file.  sapservices  can be located in /usr/sap directory

 

 

2)sapinit  is placed in /etc/init.d directory (this is for Linux systems)

 

3)Autostart parameter  has been set to 1 in instance profile of diagnostic agent

 

 

#SCRIPT STARTS HERE - COPY FROM THE LINE BELOW

 

#!/bin/sh

SID=""

profile_dir=""

LOG="$HOME/check_diagnostic_agent.log"

#DIR_LIBRARY=/usr/sap/DAD/SYS/exe/run

#=================================================================

startExecution()

{

start_timestamp=`date +"%Y-%m-%d %H:%M:%S"`

echo "[ Execution start timestamp:  ${start_timestamp}" >> "$LOG"

}

 

#=================================================================

exitOnError()

{

error_timestamp=`date +"%Y-%m-%d %H:%M:%S"`

echo "Execution end timestamp:  ${error_timestamp} ]" >> "$LOG"

exit 1

}

 

#=================================================================

endExecution()

{

end_timestamp=`date +"%Y-%m-%d %H:%M:%S"`

echo "Execution end timestamp:  ${end_timestamp} ]" >> "$LOG"

}

 

##################

##Main Function

startExecution

#================================================================

#Export Environment variables

if [ -f $HOME/.profile ]; then

     . $HOME/.profile

   #echo "Environment profile found..." >> "$LOG"

else

   echo "ERROR: No environment profile found!!!" >> "$LOG"

   exitOnError

fi

#================================================================

#Check Environment variable SAPSYSTEMNAME

if [ ! -z $SAPSYSTEMNAME ]

then

 SID="${SAPSYSTEMNAME}"

 profile_dir="/usr/sap/${SAPSYSTEMNAME}/SYS/profile"

 #echo "Diagnostic agent SID id ${SAPSYSTEMNAME}" >> "$LOG"

else

  echo "ERROR: SAPSYSTEMNAME environment variable not found...exiting!!!" >> "$LOG"

  exitOnError

fi

#================================================================

#check whether startsap exists

STARTSAP_DIR=""

for dir in `echo $LD_LIBRARY_PATH | sed 's/:/ /g'`

do

   if [ -x "${dir}/startsap" ]

   then

    STARTSAP_DIR="$dir"  

    break

   fi

done

#echo "STARTSAP_DIR=${STARTSAP_DIR}"

if [ -z "$STARTSAP_DIR" ]

then

 echo "ERROR: startsap executable not found...exiting!!!" >> "$LOG"

 exitOnError

fi

#=================================================================

#check if the SAP System is a diagnostic agent

if [ -d /usr/sap/$SAPSYSTEMNAME/SMDA[0-9][0-9] ]

then

 echo "SAP System ${SAPSYSTEMNAME} is a diagnostic agent..." >> "$LOG"

else

  echo "ERROR: Dignostic agent is not installed..." >> "$LOG"

  exitOnError

fi

#=================================================================

if [ -d "$profile_dir" ]

then

  #echo "File system /usr/sap/${SAPSYSTEMNAME}/SYS/profile exists..." >> "$LOG"

  echo "Checking if diagnostic agent is running...." >> "$LOG"

  if [ `$STARTSAP_DIR/startsap check|grep -c "is running"` -ge 1 ]

  then

      # check whether diagnostic agent processes are running

      ps -ef | grep "/usr/sap/$SAPSYSTEMNAME/SMDA[0-9][0-9]/exe/jstart" > /dev/null 2>&1

      rc1=$?

      ps -ef | grep "/usr/sap/$SAPSYSTEMNAME/SMDA[0-9][0-9]/exe/sapstartsrv" > /dev/null 2>&1

      rc2=$?

      rc=`expr $rc1 + $rc2`

      if [ $rc -eq 0 ]; then

        echo "diagnostic agent is already running..." >> "$LOG"

      else

        echo "RC=$rc...Probably diagnostic agent is not running..Executing startsap...." >> "$LOG"

        $STARTSAP_DIR/startsap

      fi

   else

     echo "Probably diagnostic agent is not running..Executing startsap...." >> "$LOG"

     $STARTSAP_DIR/startsap

  fi

else

  echo "File system does not /usr/sap/${SAPSYSTEMNAME}/SYS/profile exist..." >> "$LOG"

  exitOnError

fi

endExecution

 

# END OF SCRIPT