on a daily / hourly basis I need need to check the size for the Flash Recovery Area (v$flash_recovery_area_usage)
I was not in work yesterday and when I arrived today I checked the alert log only to find that the usage was 100%. This means the overnight backups will not run.
I was wondering if someone could provide a script that gives a warning at 80%
The SQL that I use to determine the ASM Flash Recovery Usage is -->
Code:
SQL> COL % FORMAT 99.0
SQL> SELECT name, free_mb, total_mb, free_mb/total_mb*100 "%" FROM v$asm_diskgroup;
NAME FREE_MB TOTAL_MB %
------------------------------ ---------- ---------- ----------
DATA 36054 40960 88.0224609
REDOLOG 40859 40960 99.753418
BACKUP 17885 20480 87.3291016
OCRVOTE 10145 10240 99.0722656
At the moment the usage is fine, but I'd like a shell script that I can schedule via cron, on an hourly basis and send an email, warning me that any of the ASM disks usage has gone above 80%
You could consider adding this new functionality to the script related to the monitoring of the ORA- alerts: the Oracle database instance processes log a warning in the alert log when the usage of the fast recovery area (a.k.a. flash recovery area) reaches a certain threshold.
Yes that is true. However the alert script runs once a day at 4am and I'd like to run this particular script on an hourly basis. Otherwise the first sign I am aware of the space issue is in the morning, after the backups have been scheduled to run.
thanks and that is true what you say, and I was just using the ORA-600 as an example. But I wanted to be able to act on the Flash back area, if the disk was say 80% full.
Thanks
---------- Post updated at 04:11 PM ---------- Previous update was at 03:54 PM ----------
Hi,
does this make it easier?
When it generates an alert for Disk usage, I get an email like this
Code:
ADR Home = /u01/app/oracle/diag/rdbms/dctmprod/DCTMPROD1:
*************************************************************************
2011-06-07 08:36:24.865000 +01:00
Errors in file /u01/app/oracle/diag/rdbms/dctmprod/DCTMPROD1/trace/DCTMPROD1_m000_31563.trc:
ORA-19815: WARNING: db_recovery_file_dest_size of 10737418240 bytes is 97.17% used, and has 304087040 remaining bytes available.
2011-06-07 10:21:17.155000 +01:00
Errors in file /u01/app/oracle/diag/rdbms/dctmprod/DCTMPROD1/trace/DCTMPROD1_ora_17971.trc:
ORA-19815: WARNING: db_recovery_file_dest_size of 10737418240 bytes is 100.00% used, and has 0 remaining bytes available.
So in my script can I do something which only searches for ORA-19815 errors
On that line it displays the percentage - so if it is above 80% (threshold) then it can send an email.
Thanks again
Last edited by radoulov; 06-08-2011 at 12:34 PM..
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