Previously I thought that DSS has short chain length I/O while DB2 image copy
have long chain length I/O,so DB2 will use more channel resource than DSS
backup, is it true?
If the workload cause slow down of virtual tape storage, ie, saturating vitual
tape storage front end channel,can I
We put DB2 databases in their own storage group, and don't take DSS backups.
Same with IMS. Application needs to be shut down and use DB2 / IMS /
Database backup methods. The ADRDSSU backup with the transaction
going would probably not be in a consistent state, I.E. some parts
include a specific
The db2 image backup is backing db2 data file online, while dss backups
different datasets that are not part of db2 managed. But when they both write
to same vritual tape devices, dss backup job slowed down by db2 image backup.
Is there a method to prevent this while allow both jobs ran
Victor,
Do you have OPT(4) coded for your DSS Dumps?
-Original Message-
From: Victor Zhang [mailto:victor_wor...@yahoo.com.cn]
Sent: Wednesday, July 10, 2013 7:53 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: DB2 image backup and DFSMSdss dataset backup
The db2 image backup is backing
Could you post your DFDSS control cards?
Lizette
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Victor Zhang
Sent: Tuesday, July 09, 2013 10:43 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: DB2 image backup and DFSMSdss dataset backup
yes, opt(4) is used.
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Is the ADMIN parameter coded as well?
-Original Message-
From: Victor Zhang [mailto:victor_wor...@yahoo.com.cn]
Sent: Wednesday, July 10, 2013 9:57 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: DB2 image backup and DFSMSdss dataset backup
yes, opt(4) is used
Maybe your tape subsystem slows down due to more parallel tasks?
R.S.
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Hello experts,
Occasionally in my shop, DSS dataset backup will run concurrently with DB2
image backup, the targe devices are Oracle virtual tape storage, however, it is
noticed that DSS backup will be slowed down by DB2 backup. For example, if DSS
backup run indepently, it may run about 10
