DFHZC2115 applid termid Potential CICS hang detected following a SEND to node netname, CID X'cid'. Investigation is required. ((instance) Module name: {DFHZRAC})

Explanation

CICS has issued a VTAM SEND macro to send a response but no notification has been received that the response has completed. Until this SEND operation completes, one of the limited number of receive-any RPLs remains unusable (the number of receive-any RPLs is defined by the RAPOOL system initialization parameter).

This is a serious condition. If all the receive-any RPLs become unusable in this way, CICS is unable to accept any new requests from VTAM. Similarly, a reduction in the number of available receive-any RPLs can adversely affect terminal performance and transaction throughput.

Additionally, while the RPL is hanging, a normal CICS shutdown might be unable to complete.

The CID is the 32-bit VTAM communication identifier which was assigned when the session was established.

System action

CICS continues to monitor for the SEND operation to complete. Until this happens, CICS reissues this message at approximately three minute intervals.

User response

This problem is usually caused by a failure in the network which stops the SEND completing. Check the session and the associated logical unit to ensure that there is no error condition which stops VTAM completing the SEND request.

Module

DFHZRAC

XMEOUT parameters/Message inserts

  1. applid
  2. termid
  3. netname
  4. X'cid'
  5. instance
  6. Value chosen from the following options:

Destination

Console