2791542 - Unplanned failover failed for J2EE engine - SAP HADR

1.Performing unplanned failover in a NW JAVA only system.
   sap_failover COMP,PRIM,300, unplanned

2.[sap_status path] shows the " DR Agent cannot connect to the Replication Server" like below

  PRIM.COMP.HA1 Additional Info Additional Info The DR Agent cannot connect to the Replication Server on the COMP host.
  PRIM.COMP.HA1 Failing Command Error Message Failing Command Error Message The DR Agent cannot connect to the Replication Server on the COMP host.

3.Replication server is running and no error.

4.The following error in RMA log.

2019-05-12 18:08:53 [ERROR] [Thread-8818:10880][RMA] - [GetPathStatus            ] - The DR Agent cannot connect to the Replication Server on the PRIM host due to a login error.
2019-05-12 18:08:53 [ERROR] [Thread-8818:10880][RMA] - [GetPathStatus            ] - SQL ERROR -- Message: 'Create connection failed. User or Password may be invalid. java.sql.SQLException: JZ00L: Login failed.  Examine the SQLWarnings chained to this exception for the reason(s).' SQLState: 'JZ00L'  Remote Code: '0' Cause: ''.
2019-05-12 18:08:53 [ERROR] [Thread-8818:10880][RMA] - [GetPathStatus            ] - Error executing a monitoring command against the Replication Server on the PRIM host.
2019-05-12 18:08:53 [ERROR] [Thread-8818:10880][RMA] - [GetPathStatus            ] - Error executing a monitoring command against the Replication Server on the PRIM host.
2019-05-12 18:08:53 [ERROR] [Thread-8818:10880][RMA] - [GetPathStatus            ] - Message: 'The JDBC connection parameter was not set.' Cause: ''.

• SAP Adaptive Server Enterprise (ASE) 16.0 HADR for Business Suite
• SAP NetWeaver (NW) JAVA only system

KBA , BC-SYB-REP-SAP , Replication with SAP Suite / SAP BW , Problem