PRB: The Emulator Connection Is Lost if an SNA Host Printer Is Added (316065)


The information in this article applies to:

  • Microsoft Host Integration Server 2000
  • Microsoft SNA Server 2.0
  • Microsoft SNA Server 2.1
  • Microsoft SNA Server 2.11
  • Microsoft SNA Server 2.11 SP1
  • Microsoft SNA Server 2.11 SP2
  • Microsoft SNA Server 3.0
  • Microsoft SNA Server 3.0 SP1
  • Microsoft SNA Server 3.0 SP2
  • Microsoft SNA Server 3.0 SP3
  • Microsoft SNA Server 3.0 SP4
  • Microsoft SNA Server 4.0
  • Microsoft SNA Server 4.0 SP1
  • Microsoft SNA Server 4.0 SP2
  • Microsoft SNA Server 4.0 SP3
  • Microsoft SNA Server 4.0 SP4
This article was previously published under Q316065

SYMPTOMS

When an administrator adds additional Systems Network Architecture (SNA) host print sessions to an SNA Server or Host Integration Server (HIS) 2000 configuration, users who are connected to 3270 sessions may get disconnected when the SNA/HIS 2000 configuration is saved. Additionally, users may not be able to reconnect to their 3270 sessions after the configuration change is made.

This behavior only occurs if the 3270 printer Logical Units (LUs) that are used by the SNA/HIS 2000 Print Server and host print sessions are also assigned to specific users or groups in the SNA Manager.

CAUSE

When a user starts a 3270 emulator, a request is sent to a SNA/HIS 2000 Server prompting for a list of the 3270 LUs/Pools assigned to the user. If the response to this request contains more 3270 LUs/Pools then the 3270 emulator supports, the emulator may not connect to the SNA/HIS 2000 server. It has been observed that users may be disconnected from active 3270 sessions when this behavior occurs also.

RESOLUTION

If the 3270 printer LUs that is being used by the SNA/HIS 2000 host print sessions is assigned to users or groups in the SNA Manager, remove the LU assignments and save the SNA configuration.

MORE INFORMATION

Do not assign 3270 print LUs that are being used by the SNA/HIS 2000 Print Server host print sessions to users or groups as they operate under the context of the SNA/HIS 2000 print service (Snaprint.exe).

A behavior with similar symptoms can occur if large numbers of 3270 LUs/Pools are assigned to specific users or groups in the SNA Manager even if the SNA/HIS 2000 print service is not being used. The SNA Manager allows a maximum of 4000 3270 LUs/Pools to be assigned to each configured user or group. If a 3270 emulator or other SNA application that uses 3270 LUs has a limit to the number of LUs/Pools that it can accept from the SNA/HIS 2000 Server, then this behavior can occur if the application limit is exceeded.
Modification Type:MajorLast Reviewed:6/28/2004
Keywords:kbprb KB316065
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