UNIX memory problems w/Progress DB

 
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Old 12-12-2007
Question UNIX memory problems w/Progress DB

We are currently running HP-UX 11 as our database server. The database is Progress version 9.1C.

As of late, some of our batch processes that run on the UNIX db server are erroring out because of what appear to be memory issues(at least according to Progress). The db error messages indicate that either there are too may subprocesses and it cannot fork, there is not enough memory to execute the request, or there is not enough memory to allocate a sort buffer. There does not appear to be a consistent pattern to when this happens. Also, we don't appear to be exceeding swap space.

Not sure what else it could be. If any of you have encountered similiar problems, how did you resolve it? Any and all feedback is appreciated.

-Ed
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VLDB.DB0(5)							AFS File Reference						       VLDB.DB0(5)

NAME
vldb.DB0, vldb.DBSYS1 - Contain the Volume Location Database and associated log DESCRIPTION
The file vldb.DB0 contains the Volume Location Database (VLDB), which tracks the location of all AFS volumes stored on file server machines in the cell. The Volume Location (VL) Server (vlserver process) provides information from the database to Cache Managers when they need to access AFS data. The file vldb.DBSYS1 is a log file in which the VL Server logs each database operation before performing it. When an operation is interrupted, the VL Server replays the log to complete the operation. Both files are in binary format and reside in the /var/lib/openafs/db directory on each of the cell's database server machines. When the VL Server starts or restarts on a given machine, it establishes a connection with its peers and verifies that its copy of the database matches the copy on the other database server machines. If not, the VL Servers call on AFS's distributed database technology, Ubik, to distribute to all of the machines the copy of the database with the highest version number. Always use the commands in the vos suite to administer the VLDB. It is advisable to create an archive copy of the database on a regular basis, using a tool such as the UNIX tar command. SEE ALSO
vldb_check(8), vlserver(8), vos(1) COPYRIGHT
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved. This documentation is covered by the IBM Public License Version 1.0. It was converted from HTML to POD by software written by Chas Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell. OpenAFS 2012-03-26 VLDB.DB0(5)