NullPointerException at oracle.jbo.server.DBTransactionImpl.closeStatements (Doc ID 2994762.1)

Last updated on DECEMBER 22, 2023

Applies to:

Symptoms

When using an ADF application, the users may intermittently encounter error below:

java.lang.NullPointerException
at oracle.jbo.server.DBTransactionImpl.closeStatements(DBTransactionImpl.java:5225)
at oracle.jbo.server.DBTransactionImpl.disconnectApplicationModule(DBTransactionImpl.java:5701)
at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolDisconnect(ApplicationPoolMessageHandler.java:610)
at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolMessage(ApplicationPoolMessageHandler.java:438)
at oracle.jbo.server.ApplicationModuleImpl.doPoolMessage(ApplicationModuleImpl.java:10013)
at oracle.jbo.common.ampool.ApplicationPoolImpl.sendPoolMessage(ApplicationPoolImpl.java:4618)
at oracle.jbo.common.ampool.ApplicationPoolImpl.doManagedCheckin(ApplicationPoolImpl.java:2791)
at oracle.jbo.common.ampool.ApplicationPoolImpl.releaseApplicationModule(ApplicationPoolImpl.java:1547)
at oracle.jbo.common.ampool.SessionCookieImpl.releaseApplicationModule(SessionCookieImpl.java:863)
at oracle.jbo.common.ampool.SessionCookieImpl.releaseApplicationModule(SessionCookieImpl.java:783)
...

The known conditions that trigger the exception:
1. Shared transaction is used in the nested taskflow where multiple root AM join in the transaction.
2. AM recycling happens on AppModule.

3. Warning of "Detected transaction access from a session context different than the context that attached to the transaction."

Changes

 The application was upgraded from 12.1.3.0.0 to 12.2.1.4. No such error was reported before the upgrade.

Cause

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.