| Event Id | 12 |
| Source | SNA Server |
| Description | A 3270 Session was lost due to a protocol error in the 3270 emulator. A user has lost his 3270 session due to a non-recoverable protocol error caused by the 3270 emulator being used. The following user encountered this error. Client Domain: domainname Client User: username LU name: LUNAME FMI Sense Code: 4011 |
| Event Information | When the SNA Print service is running multiple 3270 LU1 printer sessions at the same time, the SNA Print service may, under stress, send a negative acknowledgement to a BID request after the bracket is already open and the BID request has already been acknowledged. When this behavior occurs, the SNA Server service recognizes that this is a session error and ends the session. When this error occurs, all printing for the session stops, and print jobs may queue up on the host system. CAUSE: Because of timing issues in the SNA Print service, and because of the use of certain internal data structures, the BID request for one print session may be processed by another print session. RESOLUTION: A supported fix is now available from Microsoft |
| Reference Links | FIX: Multiple LU1 Print Sessions Cause Event ID 12 When the SNA Print Service Is Under Stress |
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