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Oracle open_cursor

Posted on 2010-11-15
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Last Modified: 2012-05-10
We are using apex with Oracle 11g in our application

We are facing number of open_cursor value exceeds.

Can we see which part of the code is causing problem?

Sachin
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Question by:sachin_dba
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5 Comments
 
LVL 13

Expert Comment

by:sonicefu
ID: 34134811
you can increase the open_cursors by using the following statement

ALTER SYSTEM SET open_cursors=300 SCOPE=SPFILE; -- >> you can use different value instead
0
 

Author Comment

by:sachin_dba
ID: 34134979
I want to understand which module (procedure/functions) or sessions are opening more cursors.
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LVL 13

Accepted Solution

by:
sonicefu earned 1500 total points
ID: 34135029
Following query may help you
SELECT c.sid AS "Oracle Session ID",
         c.address AS "SQL Address",
         c.hash_value AS "SQL Address Hash",
         COUNT (c.saddr) AS "Cursor Copies",
         c.SQL_ID,
         c.SQL_TEXT
    FROM v$open_cursor c
GROUP BY c.sid,
         c.address,
         c.hash_value,
         c.SQL_ID,
         c.SQL_TEXT
  HAVING COUNT (c.saddr) > 2
ORDER BY 3 DESC;

Open in new window

0
 

Author Comment

by:sachin_dba
ID: 34247044
All the apex sessions have more values. ie

SID                Program                            No. of Open Cursors
425      JDBC Thin Client      347
275      JDBC Thin Client      96
334      JDBC Thin Client      80

All the sessions are in waiting stage from long time.

Why apex sessions requires so may cursors?
0
 

Author Closing Comment

by:sachin_dba
ID: 36876560
Thanks
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