APPC or CPIC Performance Is Degraded When Using Host Security (180620)
The information in this article applies to:
- Microsoft SNA Server 3.0
- Microsoft SNA Server 3.0 SP1
- Microsoft SNA Server 3.0 SP2
This article was previously published under Q180620 SYMPTOMS
If an APPC or CPIC application uses LU6.2 conversational security with the
SNA Server host security integration feature, performance may be degraded
in unexpected ways. For example, when measuring transaction throughput with
multiple concurrent requests, a single LU6.2 conversation may take longer
to complete than multiple concurrent LU6.2 conversation requests.
This problem was initially found while beta testing SNA Server 4.0's COM
Transaction Integrator (COMTI), when configured to use LU6.2 conversation
security in conjunction with the SNA Server Host Security integration
feature.
NOTE: While this problem was fixed in the SNA Server 4.0 general release,
the problem can occur with other APPC or CPIC applications which run over
SNA Server 3.0 (including 3.0 SP1 or 3.0 SP2).
CAUSE
When the SNA Server communicates with the Host Security Integration
service, to retrieve a replicated or mapped username or password, the SNA
Server's callback function is not being signalled properly, leading to an
average 2.5 second delay.
STATUS
Microsoft has confirmed this to be a problem in SNA Server version 3.0,
3.0 SP1, and 3.0 SP2.
This problem was corrected in the latest SNA Server version 3.0 U.S.
Service Pack. For information on obtaining this Service Pack, query on
the following word in the Microsoft Knowledge Base (without the spaces):
| Modification Type: | Major | Last Reviewed: | 6/28/2004 |
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| Keywords: | kbbug kbfix KB180620 |
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