2604222 - HADR Message: 4002 Login failed on DR_maint/SID_maint - SRS

Symptom

HADR uses DR_maint and SID_maint as the maintenance users for SAP Replication Server (SRS) to login to the target server.
DR_maint (or SID_Maint) encountered Login failed with these messages in the SRS errorlog:
- ERROR #1028 DSI EXEC(104 <SID>_<Logical_Host>.<SID>) - /generic/useful/cm.c(5337)
  Message from server: Message: 4002, State 1, Severity 14 -- 'Login failed.
- ERROR #1027 DSI(104 <SID>_<Logical_Host>.<SID>) - /generic/useful/cm.c(5221)
  Open Client Client-Library error: Error: 67175468, Severity 4 -- 'ct_connect(): protocol specific layer: external error: The attempt to connect to the server failed.'.
  ERROR #13045 DSI(104 <SID>_<Logical_Host>.<SID>) - /generic/useful/cm.c(5225)
  Failed to connect to server '<SID>_<Logical_Host>.<SID>' as user 'DR_maint' (or SID_maint). See CT-Lib and/or server error messages for more information.
  The DSI thread for database '<SID>_<Logical_Host>.<SID>' is shutdown.
The above error could happen on any maintenance user.

Environment

SAP Replication Server (SRS) 15.7.1 SP100 and above
SAP Replication Server (SRS) 16.0
SAP Adaptive Server Enterprise (ASE) 15.7.1
SAP Adaptive Server enterprise (ASE) 16.0
High Availability Disaster Recovery (HADR)

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; SAP Replication Server 15.7 ; SAP Replication Server 16.0

Keywords

maintuser password; DR_maint; SID_maint; hide_maintuser_pwd; maintuser_pwd_expiration; sp_password; alter login; alter connection set password, CHADR, BHADR, RS , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , How To

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