Although Information Service repositories do not support multi-threading in general, the provision of a service facade (DAVContentService) makes this almost inevitable. Synchronization is required to support multi-threading, and the current connection code does not provide this protection. In other words, more than one thread can enter the connection setup code, and a variety of errors can occur. The likelihood of this scenario occurring is low.

In one scenario where the repository connection attempt fails, the client receives the error "Previously failed to connect", and you need to restart the system. The failure might be accompanied also by the following error message in the server log:

Click the Hot Fix tab in this note to access a hot fix for your maintenance release of SAS 9.4 for this issue.

Operating System and Release Information

Product Family	Product	System	SAS Release
			Reported	Fixed*
SAS System	SAS Web Infrastructure Platform	Microsoft® Windows® for x64	9.4 TS1M0	9.4 TS1M4
		64-bit Enabled AIX	9.4 TS1M0	9.4 TS1M4
		HP-UX IPF	9.4 TS1M0	9.4 TS1M4
		Linux for x64	9.4 TS1M0	9.4 TS1M4
		Solaris for x64	9.4 TS1M0	9.4 TS1M4

* For software releases that are not yet generally available, the Fixed Release is the software release in which the problem is planned to be fixed.

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A fix for this issue for SAS Management Console 9.4_M3 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/V11.html#57799

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A fix for this issue for SAS Middle Tier 9.4_M3 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/V10.html#57799

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A fix for this issue for SAS Management Console 9.4_M2 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/R76.html#57799

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A fix for this issue for SAS Middle Tier 9.4_M2 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/R75.html#57799

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A fix for this issue for SAS Management Console 9.4_M1 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/M93.html#57799

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A fix for this issue for SAS Middle Tier 9.4_M1 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/M92.html#57799

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A fix for this issue for SAS Management Console 9.4 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/L45.html#57799

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A fix for this issue for SAS Middle Tier 9.4 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/L49.html#57799

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In one scenario, where the repository connection attempt fails, the client receives the error "Previously failed to connect". The log might show the error "SimpleHttpConnectionManager being used incorrectly. Be sure that HttpMethod.releaseConnection() is always called...."

Type:	Problem Note
Priority:	medium

Date Modified:	2016-10-04 15:35:17
Date Created:	2016-03-04 15:13:58