PI45881: XIO handshake failures can result in a build up of XIOConnectionController objects, which can cause OOM errors.

APAR status

• Closed as program error.

Error description

• Repeated XIO handshake failures can cause a build up of
  com.ibm.ws.xs.xio.transport.channel.XIOConnectionController
  objects, and might cause JVM out of memory (OOM) errors.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  WebSphere eXtreme users with IBM            *
  *                  eXtremeIO (XIO) enabled.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Repeated XIO handshake failures might   *
  *                      cause the JVM to experience OOM         *
  *                      errors.                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Unnecessary references to
  com.ibm.ws.xs.xio.transport.channel.XIOConnectionController
  objects in the XIO handshake error path might cause an OOM
  condition.
  

Problem conclusion

• A code change was made to reduce memory consumption and
  prevent the build up of
  com.ibm.ws.xs.xio.transport.channel.XIOConnectionController
  objects.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R860 PSY

     UP