SQL & PL/SQL

Hi,

I am using the Oracle 10G Enterprise Edition 10.2.0.3.0 64 Bit Production and the JDBC Driver 9.2.0.8.0. The reason why we use JDBC 9.2.0.8.0 is because the Application that we use is deployed in weblogic 7.0 SP2 with JDK 1.3.1.

We get the below series of SQL error in the App Server. When we get the error the Application is not accessible. Kindly advice how to fix this issue.

Mon May 17 23:29:28 MST 2010 (*:*:*:jscl42:Node2) (jdbc:error:201): SQLState: null
Message: Closed Connection
Vendor: 17008


Mon May 17 23:29:28 MST 2010 (*:*:*:jscl42:Node2) (sqlio:warning:1328): SQLException setAutoCommit() on java.sql.SQLException: Closed Connection

Tue May 18 04:29:48 MST 2010 (pcsv11:test35trs1:AMX_PasswordAdapter1:ozifrs:Node1) (jdbc:error:201): SQLState: null
Message: Io exception: Connection timed out: Connection timed out

Tue May 18 03:25:59 MST 2010 (*:*:*:ubz2dw:Node1) (jdbc:warning:4612): Reset Database Connection. Bad Database Connection Detected.
Tue May 18 03:25:59 MST 2010 (*:*:*:ubz2dw:Node1) (jdbc:error:201): SQLState: null
Message: Io exception: Connection timed out: Connection timed out
Vendor: 17002

Regards
Siva