SAP Knowledge Base Article - Preview

3725134 - enqueue replication server fails to start after upgrade to s4 2023 and changed from ERS1 to ERS2

Symptom

  • Unable to start the enqueue replication server after upgrading from S4 1610 to S4 2023.
  • Error message: "RepIOConnector:constr.: NiHostToAddr for '' failed with rc -2 [enrepservio. 117]".
  • Error message: "RepServer: main: Cannot connect to enqueue server: RepIOConnector: cannot resolve hostname [enrepserv.cp 729]"


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Environment

  • ENSA 2.0 and ERS2. 

Product

ABAP platform all versions ; SAP NetWeaver all versions ; SAP S/4HANA all versions

Keywords

enqueue replication server, hostname resolution issue, RepIOConnector, NiHostToAddr failed, RepServer main error, S4 1610 upgrade, S4 2023 upgrade, enqueue server, profile configuration, ENSA, ENSA2, enqueue instance startup failure, DEFAULT profile, sapcontrol restart , KBA , BC-CST-EQ , Enqueue , Problem

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