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WebLogic Server Support Pattern: HTTP Session Replication Failures (Doc ID 779350.1)

Last updated on FEBRUARY 28, 2024

Applies to:

Oracle WebLogic Server - Version 6.1 to 8.1
Oracle WebLogic Server - Version to [Release 11g]
Oracle WebLogic Server - Version 10.3 to 10.3
Information in this document applies to any platform.


Problem Description

HTTP Session states are not getting replicated from the primary server to the secondary server. The following are some symptoms:

Problem Troubleshooting

Please note that not all of the following items would need to be done. Some issues can be solved by only following a few of the items.

Troubleshooting Steps

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In this Document
 Problem Description
 Problem Troubleshooting
Troubleshooting Steps
 Why does the problem occur?
 What are the types of HTTP Session Replication?
 How do I diagnose the issue as session replication failure?
 Enable the Debug Flags to Track Session Replication Failures
 Checklist for each Session Persistence type used
 Validate the Weblogic.xml entries
 Session Data Must Be Serializable
 Check for Network/Multicast issues
 Validate Cluster Configuration
 Application Code Diagnostics
 Cookies vs. URL-Rewriting
 Performance Issues
 Need further help?

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