Sites with a large number of folders (tree objects) in the SAS^® Metadata Repositories might experience what appears to be an unresponsive SAS Metadata Server when all of the following events occur:

• In SAS Web Report Studio, you perform a search in the Open dialog box (accessed by selecting File ► Open) with the following specifications:
  • You specify all objects.
  • You select SAS Folders (the root folder) as the location from which to start the search.
  • You select the Include Sub-Folders option.
• You have a large repository with more than 1,000 subfolders.
• An update is requested while the search is being processed. Note: For releases earlier than SAS^® 9.4, any authentication by a SAS internal-account user ID (for example, sastrust@saspw) triggers an update.

Note: This problem is more likely to occur if you are a member of the Metadata Server: Unrestricted role.

The total processing time for such a query increases exponentially when you have more than 1000 subfolders. When a query is processed, the metadata update request requires a lock on the SAS Metadata Repository. Therefore, all other user requests must wait until the long query finishes processing.

When a metadata request runs for minutes, it creates a window in which an update can arrive and create a bottleneck. The longer such a request runs, the larger that window and the bottleneck become. However, all processes eventually complete in an orderly fashion, thereby resolving the bottleneck.

You can shorten the processing time by specifying a folder that contains less than 1,000 subfolders.

Note: This problem is fixed in SAS^® 9.4.

Click the Hot Fix tab in this note to access the hot fix for this issue.

Note: For more information regarding modification of the SAS Web Report Studio search feature, see SAS Note 50744, "Performance of the SAS^® Metadata Server might decrease significantly when you use the search feature in SAS^® Web Report Studio."

Operating System and Release Information

Product Family	Product	System	Product Release		SAS Release
			Reported	Fixed*	Reported	Fixed*
SAS System	SAS Metadata Server	Microsoft® Windows® for 64-Bit Itanium-based Systems	9.21		9.2 TS2M3
		Microsoft Windows Server 2003 Datacenter 64-bit Edition	9.21		9.2 TS2M3
		Microsoft Windows Server 2003 Enterprise 64-bit Edition	9.21		9.2 TS2M3
		Microsoft Windows XP 64-bit Edition	9.21		9.2 TS2M3
		Microsoft® Windows® for x64	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Microsoft Windows Server 2003 Datacenter Edition	9.21		9.2 TS2M3
		Microsoft Windows Server 2003 Enterprise Edition	9.21		9.2 TS2M3
		Microsoft Windows Server 2003 Standard Edition	9.21		9.2 TS2M3
		Microsoft Windows Server 2003 for x64	9.21		9.2 TS2M3
		Microsoft Windows Server 2008	9.21		9.2 TS2M3
		Microsoft Windows Server 2008 R2	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Microsoft Windows Server 2008 for x64	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Microsoft Windows XP Professional	9.21		9.2 TS2M3
		Windows 7 Enterprise 32 bit	9.21		9.2 TS2M3
		Windows 7 Enterprise x64	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Windows 7 Home Premium 32 bit	9.21		9.2 TS2M3
		Windows 7 Home Premium x64	9.21		9.2 TS2M3
		Windows 7 Professional 32 bit	9.21		9.2 TS2M3
		Windows 7 Professional x64	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Windows 7 Ultimate 32 bit	9.21		9.2 TS2M3
		Windows 7 Ultimate x64	9.21		9.2 TS2M3
		Windows Vista	9.21		9.2 TS2M3
		Windows Vista for x64	9.21		9.2 TS2M3
		64-bit Enabled AIX	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		64-bit Enabled HP-UX	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		64-bit Enabled Solaris	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		HP-UX IPF	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Linux	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Linux for x64	9.21	9.4	9.2 TS2M3	9.4 TS1M0
		Solaris for x64	9.21	9.4	9.2 TS2M3	9.4 TS1M0

* 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 Threaded Kernel 9.3_M2 is available at:

https://tshf.sas.com/techsup/download/hotfix/HF2/I79.html#50673

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A fix for this issue for Base SAS 9.21_M3 is available at:

http://ftp.sas.com/techsup/download/hotfix/HF2/B25.html#50673

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Searching for all objects in all folders results in an inefficient query. The total processing time for such a search is geometrically proportional to the size of the foundation repository. Therefore, the request might effect other users' response time.

Type:	Problem Note
Priority:	high

Date Modified:	2013-08-09 14:45:49
Date Created:	2013-08-07 11:39:18