Expert Advice

IMS_Wait_QBLKS_IO  
Situation Description
Suggested Actions
Situation Description

Waiting for I/O to complete to the queue blocks dataset

 

Suggested Actions

Bottleneck Analysis found a transaction waiting for I/O to complete to the queue blocks dataset. See if a transaction is looping and flooding the message queue, by checking whether the IMS Dependent Region workspace and reviewing the Message Insert value. Also check the queue blocks dataset utilization to see if the dataset if filling up with messages from a runaway transaction. This can cause IMS to abend.

 

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