Solution : https://service.sap.com/sap/support/notes/663089 (SAP Service marketplace login required)
Key words :
system writes additional statistical information, significantly larger network load, profile parameter rfc/ext_debugging, abap language elements leave, manually activate external debugging, abap runtime error 7, abap runtime analysis, remote session handling, remote function call, abap server version 6
Related Notes :
1319517 | Unicode Collection Note |
920831 | RFC with inactive text language |
886571 | RFC non-Unicode ./. Unicode with illegal text language |
881781 | Unicode/non-Unicode RFC language and code page assignment |