2444517 - ‘Listener already exists’ error during upgrade to Oracle 12c (Windows) | SAP Knowledge Base Article

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2444517 - ‘Listener already exists’ error during upgrade to Oracle 12c (Windows)

Symptom

During the upgrade of Oracle 11g to 12c, you receive the following error by DBUA:

“Listener "LISTENER" already exists”


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Environment

  • SAP release independent
  • Oracle 11g
  • Windows Operational System

Product

SAP NetWeaver all versions

Keywords

lsnr, listener.ora, DB, database, fail, issue, OracleListenerServiceName, 121, 1104, 11.2, 12.1.0.2, Microsoft, services , KBA , BC-DB-ORA , Oracle , Problem

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