Solution : https://service.sap.com/sap/support/notes/761918 (SAP Service marketplace login required)
Key words :
terms connector framework bapi cache reason, install sp2 patch 4 hotfix 5, r3 connector returns, r3 connector stores, define connection timeout, connector cache, internal cache, physical connection, rfc metadata, backend system
Related Notes :
913483 | SAP NW Portal Connectivity - Central Note |
745175 | Eisconnector's connection pool misbehave. |
739526 | EP 6.0 SP2 Patch 4 Hotfixes |
671145 | Central Note for EP 6.0 SP2 Portal |