MS Queue Worker : BLOCKED

[Former Member]

Is there anyone who know why this happen? Appearing again and again, now it makes me feel sick...... see below :

"MS Queue Worker [JDBC_http://sap.com/xi/XI/SystemRqst]" cpu=471550.00 [reset 471550.00] ms allocated=36211481608 B (33.72 GB) [reset 36211481608 B (33.72 GB)] user="PIISUSER" prio=5 tid=0x0000000114a7cd90 nid=0x10c23 waiting for monitor entry [0x00000001230c8000..0x00000001230cbec8]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at java.util.Hashtable.containsKey(Ljava/lang/Object;)Z(Hashtable.java:313)
	- waiting to lock <0x070000008a1d2088> (a java.util.Hashtable)
	at com.sap.engine.messaging.impl.core.service.Request.isMessageBlocked(Lcom/sap/engine/interfaces/messaging/api/MessageKey;)Z(Request.java:184)
	at com.sap.engine.messaging.impl.core.service.Send.execute()V(Send.java:78)
	at com.sap.engine.messaging.impl.spi.ServicesImpl.send(Lcom/sap/engine/interfaces/messaging/spi/TransportableMessage;)V(ServicesImpl.java:184)

Edited by: Mr.Hwang on Apr 21, 2010 4:04 AM

[rajasekhar_reddy14 · Accepted solution]

Hi.,

Are you working with larger messages, this error occurs when EXCEEDS DB size, contact your basis team they will help you.

Regards,

Raj

[Former Member]

I increased visual admin's messaging.system.queueParallelism.maxReceivers property 0 to 2, and problem has cleared.

Thanks anyway!

Edited by: Mr.Hwang on Apr 26, 2010 4:32 AM

[Former Member]

Can you have a look at SAP note 920979. We had similar issue & there were not enough resouces to set lock on processing messages. YOu need to encrease the value of avalaible enqueue lock which will solve the issue.

Regards

Sushil