Script to monitor standby

Question

Hi.
I have the following script set up to monitor a standby, it then calls the second script to compare results:
standby_monitor.sh: (working):
sqlplus -L system/pwd@PROD<<END_SQL
spool standby_monitor.txt replace
select sysdate from dual;
select max(sequence#) from v\$log_history;
spool off
exit;
END_SQL
./standby_monitor.sql
===========================
standby_monitor.sql (working):
sqlplus -L sys/pwd@connect string as sysdba<<END_SQL
spool standby_monitor.txt append
select max(sequence#) STANDBY_DB_SEQUENCE_NUMBER from v\$log_history;
spool off
exit;
END_SQL
Both of these work fine - but I need now to compare both results, and if there is a difference have a mail program send the results to our helpdesk.
If there is any differenc between the two results (the max sequence number from Production and the STANDBY_DB_SEQUENCE_NUMBER from the standby , then send email to notify us.
mail ushere.com< standby_monitor.txt [RET]
Could somebody point me in the righrt direction for writing this final part? I do have some Windows scripts, but find it tricky converting to Linux version.
Thanks in advance..
DA
Oracle 10.2.0.2.0
Linux Red Hat 4.

Answer 1

Hi,
I think you can do it by running it from primary db
say your primary archive dest is 1 and standby dest_id is 2
<pre>
sqlplus -s "/ as sysdba" <<EOF
set head off
set feedb off
spool diff.log
select (select name from V\$DATABASE),(select max(sequence#) from v\$archived_log
where dest_id=1) Current_primary_seq,( select max(sequence#) from v$\archived_log
where to_date(next_time,'dd-mm-yyyy') > sysdate-1
and dest_id=2 ) max_stby,(select nvl((select max(sequence#) - min(sequence#) from v\$archived_log
where to_date(next_time,'dd-mm-yyyy') > sysdate-1 and dest_id=2 and applied='NO'),0) from
dual) "To be applied",((select max(sequence#) from v\$archived_log
where dest_id=1) - (select max(sequence#) from v\$archived_log
where dest_id=2)) "To be Shipped"
from dual
spool off
exit
EOF
diff=`awk '{print $5}' diff.log`
if [[ $diff -gt 0 ]];
then
mailx
fi
</pre>
I think this should do the work..Not tested the scripting part but the sql will give you the result. $4 gives the logs which need's to be applied on standby.
Cheers
Amit
http://askdba.org/weblog/
Edited by: Amit_DBA on Aug 20, 2009 5:32 PM