Upgrading JDBC Driver Version from 9.x to 10.x may Impact JVM Performance due to Increased Garbage Collection Effort (Doc ID 340755.1)

Last updated on JANUARY 09, 2017

Applies to:

Oracle Containers for J2EE - Version: 9.0.2.0.0 to 10.1.2.3.0 - Release: 9iAS to AS10gR2
Information in this document applies to any platform.

Symptoms

You have a J2EE application running in Oracle Containers for J2EE and are using JDBC to access the database and have noticed
that the Java Virtual Machine (JVM) where your application is running has started to consume more memory and/or consuming
a higher proportion of CPU activity.

You may be accessing database connections by loading the JDBC driver or obtaining the connections via a DataSource object defined
by the OC4J data-sources.xml configuration file.

Changes

You have recently followed a supported approach to upgrade the JDBC driver from a 9i JDBC version (9.0.1.x, 9.2.0.x)
to a 10g JDBC version (10.0.1.x, 10.2.0.x) .

Cause

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