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2253115 - JCO RFC server threads are in [DOWN] state in SLD


While checking the SLD JCO server status from SLD UI -> Administration -> Details -> "Data Suppliers" the following is perceived:

JCO RFC server threads:
  [DOWN] NUC:localhost_sapgw00_SLD_NUC_1417106731
  [DOWN] UC :localhost_sapgw00_SLD_UC_1278293038
  [DOWN] NUC:localhost_sapgw00_SLD_NUC_1220194391
  [DOWN] UC :localhost_sapgw00_SLD_UC_910059923

The JCO RFC server threads could not start on the gateway, which is assigned to the SLD.



  • SAP AS Netweaver Java release independent;
  • System Landscape Directory (SLD).


SAP NetWeaver all versions


Connection refused SLD_UC SLD_NUC denied 748, internal error, session terminated, ThSAPOSMINIT, down, off, offline, jco, java connector, sld_uc, sld_nuc, Start All servers, JCO server , KBA , BC-CCM-SLD , System Landscape Directory / Component Repository , BC-CST , Client/Server Technology , BC-CST-GW , Gateway/CPIC , BC-CCM-SLD-JAV , System Landscape Directory Java Client & Server , Problem

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