PH04912: CONNECTIONS TO ADVISORS TAKE LONG THAN CONNECTTIMEOUT TO TIME OUT

8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• Advisor connections which fail due to a time out are not
  detected when the timeout value expires.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM WebSphere Application Server Network    *
  *                  Deployment Load Balancer users              *
  ****************************************************************
  * PROBLEM DESCRIPTION: The load balancer advisors do not       *
  *                      timeout on a connection failure when    *
  *                      connecttimeout expires                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Advisors timeout on connection failures but the timeout may be
  delayed rather than occurring when the connecttimeout period
  expires.
  

Problem conclusion

• The connection attempt it checked on an increasing interval to
  see if the connection established and that interval could
  exceed the timeout value.  Modified the code to ensure the
  socket is checked when the timeout period expires.
  
  Fix level :  8.5.5.16 and 9.0.0.11
  This fix affects all flavors of Load Balancer:
    Load Balancer for ipv4 (LLB)
    Load Balancer for ipv4 and ipv6 (ULB)'
    Content Based Routing (CBR)
    Site Selector (SS)
  

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 EDGE LB IPV4

• Fixed component ID

  5724H8812

Applicable component levels

• R850 PSY

     UP

• R900 PSY

     UP