3593234 - SAP HANA System Replication Status Shown as UNKNOWN

• In the SAP HANA system replication setup, the replication status for a specific service is shown as UNKNOWN.
• The issue occurs in the Disaster Recovery (DR) node.
• Replication looks to be occurring but the status is unknown due to nameserver communication issues.
• Error messages in the indexserver or nameserver traces of secondary indicate a connection issue between the primary and secondary sites, for example:

e sr_dataaccess    DisasterRecoverySecondaryImpl.cpp(00883) : Error occurred during connect to primary: exception 3000301: Connection could not be established
e sr_dataaccess    DisasterRecoverySecondaryImpl.cpp(01098) : Trying to reconnect to primary (#) 

e Stream           NetworkChannelCompletion.cpp(00455) : [b0b7637e0289000d,<secondary IP address>:40404,<primary IP address>:40049,UNK,0] NetworkChannelCompletionThread #8 {<NetworkChannelSSLFilter>={<NetworkChannelBase>={this=139662302705688, fd=34, refCnt=1, idx=8, local=10.235.0.138/40404_tcp, remote=10.234.0.157/40049_tcp, state=ConnectWait, pending=[---c]}}}: 
Error in asynchronous stream event: exception  1: no.2110001  (Basis/IO/Stream/impl/NetworkChannelCompletion.cpp:381) TID: 1172641
    Generic stream error: getsockopt, Event=EPOLLERR - , rc=110: Connection timed out; $Context$=[b0b7637e0289000d,<secondary IP address>:40404:40404,<primary IP address>:40049,UNK,0]; $channel$={<NetworkChannelSSLFilter>={<NetworkChannelBase>={this=139662302705688, fd=34, refCnt=1, idx=8, local=<secondary IP address>:40404:40404,remote=<primary IP address>:40049_tcp, state=ConnectWait, pending=[---c]}}} 

• SAP HANA High Availability (System Replication, DR, etc.)
• SAP HANA, platform edition 2.0

SAP HANA, system replication, UNKNOWN status, primary site, secondary site, connection issue, network port, security group, systemDB, tenant DB. , KBA , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) , Problem