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3546432 - RFC ERROR: logon data container length XX is longer than target buffer length XX

Symptom

At the application using the JCo library, the following error message is observed:

com.sap.conn.jco.JCoException: (102) JCO_ERROR_COMMUNICATION: Initialization of destination XXXX failed: connection already closed

At the ABAP end, the following entries are seen at the dev_rfcXX trace file:

RFC ERROR: logon data container length XX is longer than target buffer length XX





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Environment

  • SAP Java Connector (JCo)
  • SAP NetWeaver based systems
  • ABAP Platform based systems

Product

ABAP platform all versions ; SAP NetWeaver all versions

Keywords

JCo, Connection already closed,  Logon data container length, Is longer than target buffer length, RFC ERROR, java connector, connector, , KBA , BC-MID-CON-JCO , Java-Connector , BC-CST-GW , Gateway/CPIC , BC-MID-RFC , RFC , Problem

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