LO41194: AGENT MANAGER WILL STOP WHEN MESSAGE QUEUE IS FULL

APAR status

• Closed as duplicate of another APAR.

Error description

• The logic surrounding the error condition "AMgr:  Unexpected
  error from MQPut:  Message Queue is full", will cause Agent
  Manager to stop processing all agents currently in the queue.
  What should happen, is that agent manager should keep processing
  agents currently in the queues, so that when it catches up, it
  will recover and continue processing agents and new documents.
  It was relatively easy for this condition to occur due to spr
  TBOT3YRNYF.  With that spr, once the queue was full and this
  condition was encountered, doing a Tell Amgr Sched, would show
  all sorts of agents in pending queues.  The feeling is that
  agents currently in the queues should have been processed when
  in fact they didn't.  Now that spr TBOT3YRNYF, is resolved, the
  condition is less likely to occur.  However, with machines
  getting faster, and servers handling more db's, users, & agents,
  it is not unfeasible where this error condition will occur for
  real.  To be prepared, the code should be modified to continue
  processing agents currently in queue, so that the message queue
  will be reduced, and more doc updates/mail deliveries will get
  added to the queue and continue processing.
  
  
  99/07/23 08:37:08 AM  AMgr: Unexpected error from MQPut: Message
  Queue is full.
  
  many many times........
  
  99/07/23 08:37:08 AM  AMgr: Unexpected error from MQPut: Message
  Queue is full.
  
  
  > sh stat
    Agent.Daily.AccessDenials = 0
    Agent.Daily.ScheduledRuns = 1418
    Agent.Daily.TriggeredRuns = 211
    Agent.Daily.UnsuccessfulRuns = 7
    Agent.Daily.UsedRunTime = 2790 Seconds
    Agent.Hourly.AccessDenials = 0
    Agent.Hourly.ScheduledRuns = 105
    Agent.Hourly.TriggeredRuns = 5
    Agent.Hourly.UnsuccessfulRuns = 1
    Agent.Hourly.UsedRunTime = 108 Seconds
  
  > tel amgr sched
  E S 08:36 AM Today     Agent-A | mta30    mail2/xxxx.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/xxxx.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/xxxxx.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/HYAA7792.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/HYAA4525.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/hkaa7726.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/IYAB2885.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/IYAB2917.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/IHAB3146.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail1/KSAB2904.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/gyab1520.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/IKAB2955.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/ITAA5855.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/IYAB2928.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/IYAB3167.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/kmaa8273.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail1/KJAB3104.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail1/KTAB3071.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/KAAB3162.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/KSAB2904.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/fjtest23.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/KYAB2920.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail1/KHAB2887.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail2/KIAB2860.nsf
  E S 08:36 AM Today     Agent-A | mta30    mail1/MTAB3039.nsf
  
  V M                    Agent-ZZZ | fmall mail2/tmab0062.nsf
  V M                    Agent-ZZZ | fmall mail2/TSAB3171.nsf
  V M                    Agent-ZZZ | fmall mail1/AKAA9356.nsf
  V M                    Agent-ZZZ | fmall mail2/TOAB3142.nsf
  V M                    Agent-ZZZ | fmall mail1/WKAB2964.nsf
  V M                    Agent-ZZZ | fmall mail2/WKAB2964.nsf
  V M                    Agent-ZZZ | fmall mail2/yraa7449.nsf
  V M                    Agent-ZZZ | fmall mail1/YAAB2870.nsf
  V M                    Agent-ZZZ | fmall mail2/YAAB2870.nsf
  ents written:     3
  
  
  
  I have not reproduced, but in theory the following should
  work:
  - Have a mixture mail trigger, doc update, and scheduled agents
  running on a
  server
  - Increase the values for AMgr_DocUpdateAgentMinInterval,
  AMgr_DocUpdateEventDelay,  AMgr_NewMailAgentMinInterval,
  AMgr_NewMailAgentEventDelay to a value large enough to allow
  many doc updates.
  Perhaps 120 minutes
  - Create and send over 65k individual mail messages across 1 or
  more db's on
  the same server
  - Update over 65k individual docs across 1 or more db's on the
  same server
  - You should see the error "AMgr: Unexpected error from MQPut:
  Message Queue is
  full"
  - At this point do a "Tell Amgr Sched", and you will see agents
  stuck in queue
  without progressing
  

Local fix

• Quit AMGR and restart or restart server
  

Problem summary

Problem conclusion

Temporary fix

Comments

• This APAR is associated with SPR# SVRO4ATNLE.
  This APAR is a duplicate of LO34269
  

APAR Information

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

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

Fix information

Applicable component levels