IZ98966: TSAAM OPERATIONS CONSOLE INTERMITTENT LOGIN PROBLEMS CAUSED BY A DEADLOCK

APAR status

• Closed as program error.

Error description

• Support Engineer:  GBH
  Change Team Eng:   EJ
  
  
  Environment:  TSAAM v3.2.1.1
  
  
  Details:
  
  Sometimes operators couldn't login to ISC. I see then exceptions
  in
  SystemOut.log like this ones from today in the morning (Feb
  11th):
  
  portletcontainer.core.PortletServlet doDispatch EJPPC0104E:
  Error
  occurred while dispatching portlet
    javax.portlet.PortletException
  ......
  Caused by: java.lang.RuntimeException: pauseServletThread():
  m_bWrapperMode == false : timeout exceeded
  
  
  
  Summary of data analysis: The thread dump shows a dead-lock in
  the TSAAM code. The situation can occur if a user opens the SA
  Operations Console and,while the code still retrieves the
  domain hierarchy from the backend, the user triggers a Logout
  from the ISC.
  This may also be the cause for other hanging OpCon problems that
  occur from time to time.
  
  1LKDEADLOCK    Deadlock detected !!!
  
  NULL           ---------------------
  NULL
  2LKDEADLOCKTHR  Thread "WebContainer : 7" (0x3A961800)
  3LKDEADLOCKWTR    is waiting for:
  4LKDEADLOCKMON      sys_mon_t:0x37FDF728 infl_mon_t: 0x37FDF750:
  4LKDEADLOCKOBJ
  com/ibm/eez/ui/model/EEZAutomationDomain@BC1C44A0/BC1C44AC:
  3LKDEADLOCKOWN    which is owned by:
  2LKDEADLOCKTHR  Thread "WnTransThread:18" (0x38002100)
  3LKDEADLOCKWTR    which is waiting for:
  4LKDEADLOCKMON      sys_mon_t:0x39E6BB4C infl_mon_t: 0x39E6BB74:
  4LKDEADLOCKOBJ
  com/ibm/eez/ui/model/EEZDomainCache@BC5421D8/BC5421E4:
  3LKDEADLOCKOWN    which is owned by:
  2LKDEADLOCKTHR  Thread "WebContainer : 7" (0x3A961800)
  

Local fix

• Restart AppServer
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Tivoli System Automation Application Manager
  * 3.2.1 users
  ****************************************************************
  * PROBLEM DESCRIPTION:
  * A user might be unable to login to the Integrated Solutions
  * Console, which hosts the SA AM Operations console because of
  * a dead lock. The situation can occur if a user opens the SA AM
  * Operations Console and, while the code still retrieves the
  * domain hierarchy from the backend, the user triggers a Logout
  * from the Integrated Operations Console.
  ****************************************************************
  * RECOMMENDATION:
  ****************************************************************
  

Problem conclusion

• The internal handling has been adjusted to address the issue.
  Now the dead lock will no longer occur in case a user logs in
  and out while the login process is still in progress.
  .
  The official fix for this problem is included in Tivoli System
  Automation Application Manager 3.2.1 fix pack 3.
  .
  Additional Search Keywords
  .
  

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

  SYS AUTO APPLI

• Fixed component ID

  5724S9200

Applicable component levels

• R321 PSY

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