topic Re: Will background jobs effect memory? in Application Development and Automation Discussions

Will background jobs effect memory?

Former Member — Tue, 10 Aug 2004 03:56:38 GMT

Hi,

The SAP installation was running exceptionally slow so I checked the background jobs where two jobs were running one which was completed but the other called EU_REORG running.I deleted the background job.After this the performance did increase but the issue is that one day i see that the hard drive capacity was nearly 20GB but after a few days I see that it has come down to 2GB does the background job effect the way the hard drive memory is allocated? and in fact I am sole user of that SAP system so there r no chances that huge amount of documents are created overnight by itself..

Thanks in advance

sudhi

Re: Will background jobs effect memory?

thomas_jung — Tue, 10 Aug 2004 07:29:57 GMT

Here is the description of EU_REORG from OSS Note 18023:

EU_REORG:

As mentioned above, the indices are automatically updated online by

the tools. To keep the effort for updating these indices as low as

possible, only the changes are logged, which means a reorganization

of the complete index for each program is required from time to

time. To avoid having this reorganization interfere with online

work, job EU_REORG runs every night and performs this task. If job

EU_REORG did not run one night, this simply means that the

reorganization takes place more often online.

I can't imagine that turning off EU_REORG would cause you to consume so much disk space. I would make sure that you aren't get large core dumps or or types of trace files. Depending on how much physical memory you have in your system, these files can be quite large.

Re: Will background jobs effect memory?

Former Member — Tue, 10 Aug 2004 10:41:08 GMT

Hi Thomas,

Thank you for your timely response. i would be glad if you could let me know how can i prevent this from happening in future and are there any possibilities of regaining the drive space. Also i could not understand by the term physical memory that you have mentioned.If it is the RAM then i have 768 MB of RAM.

Re: Will background jobs effect memory?

thomas_jung — Tue, 10 Aug 2004 11:07:12 GMT

Yes I did mean RAM. If you are getting Core dumps, they could be the size of your RAM. It would only take a few to eat up a lot of space. Look in your Work directory under your SAP install. This is where all your SAP trace files will be. Also check out your OS's main directory. If you are running on Windows - your system32 directory. There might be large trace files there as well. Also on windows see if you have any large Dr. Watson files. If you find any trace or dump file that are really large copy them off to another system or delete them. However if you are getting a lot of them that is probably a sign of a problem. Have you checked out if you are getting a lot of ABAP dumps or strange SAP System Log messages?

Re: Will background jobs effect memory?

Former Member — Thu, 12 Aug 2004 05:50:40 GMT

Hi Thomas,

Great stuff... i did see the work directory and found just a single file(dev_w0) that was 20.6 GB!! i just deleted it. Thanks a Lot.