| ERROR | No matching authentication protocol |
| CAUSE | No acceptible authentication protocol for both client and server |
| ACTION | Administrator should set SQLNET_ALLOWED_LOGON_VERSION parameter on both client and servers to values that matches the minimum version supported in the system. |
| 2172935 | Installation - SAP Systems based on SAP NetWeaver 7.1 and Higher on UNIX/Windows: Oracle |
| 2173485 | Installation - SAP Systems Based on SAP NetWeaver 7.0 including EHPs on UNIX/Windows: Oracle |
| 1714490 | OBSOLETE: Inst.Systems Based on NW 7.0 / 7.0 EHP 1-3 - UNIX / Oracle |
| 1789225 | Oracle Security Alert for CVE-2012-3137 - Information |