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2473880 - RAISE_EXCEPTION dump with CONNECT_TO_ENQ_SERVER_FAILED

Symptom

The following symptoms appear on system:

  • In ST22  show RAISE_EXCEPTION dumps on transaction with CONNECT_TO_ENQ_SERVER_FAILED exception.
  • In SM21 the entries can be observed as
<TIME> <instance name> DIA  <WP> 000 <USER>                 GI  0 Error calling the central lock handler
<TIME> <instance name> DIA  <WP> 000 <USER>               GI    4 > Dequeue All call failed
  • When checking in related work process trace files (dev_w*) , the entries can be seen as
E  *** ERROR => EnsaCliDoRequest: DoRequest failed (rc=107): 436 bytes on con. 0 in layer 0 (EncCli) (1/0) [ensacli.c    406]
E  {root-id=16AEF4B5AD471ED7AECFEE96B5C30027}_{conn-id=00000000000000000000000000000000}_0
E  *** ERROR => ENSA_Connect(): AlHARegisterComponent() failed with error 254 [ensaclnt.c   1100]
E  {root-id=16AEF4B5AD471ED7AECFEE96B5C30027}_{conn-id=00000000000000000000000000000000}_0
E  *** ERROR => EncCliIConnect: failed to connect to enqueue server at <instance name where ENQ is running> through layer EncCli (rc=-3) [enccli.c     1084]
E  {root-id=16AEF4B5AD471ED7AECFEE96B5C30027}_{conn-id=00000000000000000000000000000000}_0
E  *** ERROR => EncCliReq: failed to connect to server [enccli.c     507]
E  {root-id=16AEF4B5AD471ED7AECFEE96B5C30027}_{conn-id=00000000000000000000000000000000}_0
OR

E *** ERROR => ENSA_CommInit: failed to connect to server at <host>/<service> through layer EncCli (rc=7) [ensaclnt.c 764]
  •  It can happen to entire system or few affected instances.


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Environment

SAP NetWeaver release independent.

Product

SAP NetWeaver all versions

Keywords

SM12 ,rdisp/wp_no_enq ,enque/serverhost ,enque/process_location , GI 0 ,Error calling the central lock handler , GI 4 , Dequeue All call failed , EnsaCliDoRequest: DoRequest failed , (EncCli) (1/0) , ENSA_Connect(): AlHARegisterComponent() failed with error 254 , EncCliIConnect: failed to connect to enqueue server , EncCli (rc=-3) , EncCliReq: failed to connect to server , EnsaCliDoRequest: DoRequest failed (rc=107) , Classical integrated enque server , SAP Netweaver, dialog instance, enque server , profile ,Lock management operation mode , Internal lock management in same work process , KBA , BC-CST-EQ , Enqueue , BC-CST-DP , Dispatcher, Task Handler , Problem

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