I/O buffer is temporarily insufficient for message queue service aa...aa. queue group ID=bb...bb, physical file=cc...cc

The I/O buffer for message queue service ran short because many requests concentrated to the queue group. The buffer remains insufficient after retrying as many times as specified for buffer shortage in the message queue service definition.

aa...aa: Message queue server name

bb...bb: Queue group ID for which buffer shortage occurred

cc...cc: Physical file for which buffer shortage occurred

S: Performs one of the following:

1. If the error occurs in a write to the message queue file, the system discards the message.
2. If the error occurs while UAP is reading the message queue file, the system reschedules the event as an error event.
3. If the error occurs while MCF is reading the message queue file, the system performs either of the following according to the message type:
   - For a branch message:
   . Reschedules the event.
   - For a response message:
   . Discards the message.
   

Countermeasure: After MCF ends normally, increase the number of I/O buffers in the message queue service definition and then start MCF.