PH21965: Multiple concurrent requests to z/OS Connect EE IMS service provider services with SAF keyring TLS connections time out.

APAR status

• Closed as unreproducible in next release.

Error description

• When multiple API requests are sent simultaneously for IMS
  service provider services secured with AT-TLS, timeouts are
  occuring. The following error messages are written:
  
  SRVE8025E: An error or timeout occured while doing async
             servlet processing. Unable to obtain a lock. Error
             processing has already been invoked by another
             thread.
  SRVE8025E: An error or timeout occured while doing async servlet
             processing.
  
  Additional search words: SRVE8025E msgSRVE8025E SRVE8025
  msgSRVE8025E
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the z/OS Connect EE V3 IMS      *
  *                 service provider.                            *
  ****************************************************************
  * PROBLEM DESCRIPTION: Multiple concurrent requests to z/OS    *
  *                      Connect EE IMS service provider         *
  *                      services with SAF keyring TLS           *
  *                      connections time out.                   *
  ****************************************************************
  The IMS TMRA included in the z/OS Connect EE IMS service
  provider had an issue with handling concurrent request for SAF
  keyring TLS connections. Each connection factory attempted to
  create a new connection instance with a secure socket to IMS
  Connect. The creation of the first connection caused the other
  connection to wait and subsequently timeout.
  

Problem conclusion

Temporary fix

Comments

• z/OS Connect EE has been updated with the latest version of IMS
  TMRA for which this issue has been resolved. The updated TMRA
  creates a cache of the TLS connections, improving performance
  and eliminating the time-out issue.
  
  The fix for this APAR is expected to be delivered by the PTF for
  z/OS Connect EE V3.0.33.0 (PH24143).
  

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

  Z/OS CONNECT EE

• Fixed component ID

  5655CE300

Applicable component levels