2716665 - ERS fails to connect with Standalone Enqueue Server (ENSA)

Symptom

Enqueue replication server (ERS) is not connecting with Standalone Enqueue Server (ENSA) even though the profile parameters enque/serverhost and enque/serverinst (or enque/encni/repl_port) specify the right connection data to ENSA.

The below information can be seen in the trace file dev_enqrepl under ASCS/SCS (ENSA) work directory:

[Thr 140388031239232] Connect received, but already connected

[Thr 140388031239232] Connect from host <hostname>

Below error message also can be seen in the trace file dev_enrepsrv available in ERS work directory:

[Thr 139899880748864] Fri Nov 2 17:38:22 2018
[Thr 139899880748864] EnqStandalone: Enqueue Server 2 is not configured
[Thr 139899880748864] Replication server start with instance number 03
[Thr 139899880748864] Enqueue server on host <hostname>, IP-addr <IP address>, port 5<instance_number>16
[Thr 139899880748864] ***LOG Q0I=> NiIRead: P=<IP address>:5<instance_number>16; L=<IP address>:<port>: recv (104: Connection reset by peer) [/bas/753_REL/src/base/ni/nixxi.cpp 5430]
[Thr 139899880748864] *** ERROR => NiIRead: SiRecv failed for hdl 1/sock 9
(SI_ECONN_BROKEN/104; I4; ST; P=<IP address>:5<instance_number>16; L=<IP address>:<port>) [nixxi.cpp 5430]
[Thr 139899880748864] *** ERROR => RepServer: main: no connection to Enqueue Server (rc=-3; ENC_ERR_PROTO) => try again in 400 ms (see SAP note 1943531) [enrepserv.cp 833]
[Thr 139899880748864] ***LOG Q0I=> NiIRead: P=<IP address>:5<instance_number>16; L=<IP address>:<port>: recv (104: Connection reset by peer) [/bas/753_REL/src/base/ni/nixxi.cpp 5430

Environment

SAP NetWeaver with ERS and ENSA running.

Product

SAP NetWeaver all versions

Keywords

doesn't connect, enserver, enrepserver, fail, ERS not working, High Availability, failover, replication, enque , KBA , BC-CST-EQ , Enqueue , Problem

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