Solution : https://service.sap.com/sap/support/notes/868264 (SAP Service marketplace login required)
Key words : 
terms caf/eu/es/conn/abap, caf/eu/es/conn/abap service, caf/eu/es/conn/abap, abap connector, enterprise search, connector reason, sap system, 'numberofconnections' property, system data, temporarily unavailable
Related Notes : 
       
| 851251 | (Outdated) SAP NetWeaver 2004s Installation on UNIX |