Open cursors problem- j2ee + oracle 10g

Hi,
I am using EJB on sunOne application server 8.1., Oracle 10g DB.
EJB container connects to Oracle DB through a set of connection pools.
BMP for all entity beans.
I have about 160 PL/SQL functions that make up the business logic of the online application. everytime the application runs, I get an increasing number of open cursors, including some of the ones that are explicitly closed within PL/SQL (inspection with sys.v_$open_cursor).
I made sure all CallableStatements, PreparedStatements, RecordSets within the beans are closed and set to NULL. All PL/SQL functions use explicit cursors, so every select statement is managed within a cursor which is explicitly closed when the function finishes with it.
From v$open_cursor, I identified the sessions with the cursors still open, and issued (ALTER SYSTEM KILL SESSION �sid, #serial�) for each of the sessions (this is done via a PL/SQL function for all inactive sessions).
These sessions have state INACTIVE, and wait_class IDLE. This has Killed all sessions, but I was not able to use the application anymore. I suspect by killing those sessions we have also caused the connections between EJB container and the Oracle DB. The only way to use the application now is to stop and restart the sunONE domain � this is very inconvenient.
Has anyone encountered a similar problem? any suggestions to reduce or eliminate the open cursors number? Please help.
Thank you all

Maybe you can try to have a smaller steady-pool-size and idle-timeout-in-millis for your connection pools.
Also, if that's at all possible, have smaller number of connection pools being shared by more apps.
Just my 2c.
thanks.

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Hi. I think this is an oracle driver problem, in all likelihood.
We test a connection with:
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stmt.execute(sql);
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Jeeva wrote:
I am on WLS 6.1 sp2.
When i leave the server up overnight unaccessed and come back and see in the morning,
I see the following stacktrace on the server console.
I dont think its causing any harm, but is there anyway to prevent this from occuring?
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at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:208)
at oracle.jdbc.ttc7.Oopen.receive(Oopen.java:118)
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user9930565 wrote:
Hello everyone!
removed long whine
>
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1000990 wrote:
Hi,
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Open cursors problem- j2ee + oracle 10g

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