Shell Script To Monitor Lag In Standby Datbase Using Dgmgrl

 Shell Script To Monitor Lag In Standby Datbase Using Dgmgrl

===========================================================

Below script is helpful in monitoring lag in standby database and send mail to DBAs in case the lag is increasing. For the script to work, make sure dataguard broker is enabled between primary and standby database.


 


SEE DGBROKER ARTICLE:


 How to setup dgbroker in oracle 12c:


Useful dgmgrl commands:


 


SCRIPT PREPARATION:


PRIMARY DB UNIQUE_NAME – > PRIMDB

STANDBY DB UNIQUE_NAME -> STYDB

cat /home/oracle/dgmgrl_standby_lag.sh


#!/bin/bash

export ORACLE_HOME=/oracle/app/oracle/product/12.1.0/dbhome_1

export ORACLE_SID=primdb

export PATH=$ORACLE_HOME/bin:$PATH

echo -e “show database stydb”|${ORACLE_HOME}/bin/dgmgrl sys/orcl1234 > DB_DG_DATABASE.log

cat /home/oracle/DB_DG_DATABASE.log  | grep “Apply Lag”  > FILTERED_DB_DG_DATABASE.log

time_value=`cut -d ” ” -f 14 FILTERED_DB_DG_DATABASE.log`

time_param=`cut -d ” ” -f 15 FILTERED_DB_DG_DATABASE.log`


if [[ “$time_param” == “minutes” && “$time_value” -ge 1 ]]

then

mailx -s “DREAIDB LAG is in minutes ”  suppor@dbaclass.com<DB_DG_DATABASE.log

else

if [[ “$time_param” == “seconds” && “$time_value” -ge 30 ]]

then

mailx -s “DREAIDB LAG is in seconds ”   support@dbaclass.com<DB_DG_DATABASE.log

else

if  [[ “$time_param” == “hour(s)” && “$time_value” -ge 1 ]]

then

mailx -s “DREAIDB LAG is in hours ”   support@dbaclass.com <DB_DG_DATABASE.log

fi

fi

fi


 


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


Now configure the the script in crontab



00,10,20,30,40,50 * * * * /home/oracle/dgmgrl_standby_lag.sh > /tmp/dg_lag.log

 


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