Michael_D. 1100004WAH Visits (3357)
PTF UK91435 (APAR PM79520)
is required for DB2 10 for z/OS customers in a Data Sharing environment
PTF UK91435 is required for DB2 10 for z/OS customers
Michael_D. 1100004WAH Visits (1937)
In preparation to DB2 10 migration there is a need to answer the question if DB2 tooling will support the full functionality of a given DB2 version or will it tolerate the new version and worse if it will not support the new version. Mainly this will be most important if new functionality are effectively used and if the migration of a given DB2 environment completed the conversion to new function mode ( DB2 10 NFM ). Nevertheless, is is also important to watch and maintain the DB2 10 maintenance level to answer the question supported or tolerated.
This table provides information regarding DB2® Tools support for DB2® 10 for z/OS.
For more information on which new functions of DB2 10 are utilized by any specific product, or to find out about DB2 10 compatibility for products or releases not included in this matrix, please contact your IBM Customer Service Representative.
Michael_D. 1100004WAH Visits (2952)
Customers running with DB2 10 NFM have noticed that table spaces associated with the DB2 directory data base or catalog (DSNDB01 and SPT01) experience significant space growth resulting from BIND/REBIND operations, DDL, utility activity (Reorg). The only way customer could sustain the issue was by frequently scheduling reorgs on the DB2 directory and catalog in DB2 10 NFM.
Updated list of APARs for excessive SPT01/DBD01 growth – Base and LOB tablespaces - including related Utility APARs in this area!
DB2 10 NFM Cat/Dir SPT01/DBD01 excessive growth
APAR PM66874 to resolve: LOB integrity abend during REORG of DBD01.
DB2 10 NFM Cat/Dir SPT01/DBD01 excessive growth related
APAR PM68842 to resolve: REORG abend. Broken aux index.
timmzzz 060000RTR7 Visits (3912)
When running more than one DB2 z/OS subsystem on a single LPAR, there is a danger a "runaway" (e.g. storage leak) DB2 subsystem is taking out the LPAR. As this could cause a domino effect of outages caused by that single DB2 subsystem, REALSTORAGE_MAX subsystem parameter was introduced. This parameter was hidden ZPARM SPRMRSMX in DB2 V9 and now with PM24723/PK18354 becomes opaque. With DB2 10 you now have REAL
As mentioned above, it is recommend to set REALSTORAGE_MAX if more than one DB2 subsystems resides on a single LPAR. The best practices as of today are to set this parameter 1.5 to 2 x from the normal DB2 subsystem storage usage. If REALSTORAGE_MAX (DB2 10) or SPRMRSMX in DB2 9 is set to low, the DB2 subsystem might gets terminated before a real storage problem exists. If you set it to high, the LPAR might be gone before the parameter is being considered.
In addition new DB2 10 messages are going along with the actions
timmzzz 060000RTR7 Visits (2741)
Customer X experienced Partition-By Growth (PBG) size increase with APPEND YES. Assuming the data is sparsely distributed across the PBG partitions. The following ONLINE REORG redistributed the data to the first 3 partitions. However, after the SWITCH PHASE, concurrent SQL would still append data to the last partition, leaving many partitions empty in between.
PM81189: MSGDSNT217I ON REBIND PACKAGE SWITCH AND NO ROW IN SYSIBM.SYSPACKCOPY IN V10 NFM FOR PACKAGE THAT USES CGTT
timmzzz 060000RTR7 Visits (2135)
Customer X experienced problems after migrating to DB2 10 NFM. Selected packages where rebound right after the migration. PLANMGMT EXTEND as the default in V10 NFM, shouldallow to return to prior access path if needed.
However, for some packages the old access path could not be reverted even under PLANMGMT EXTENDED.
The reason behind this are Created Global Temp Tables (CGTT). They do have a dependency on SYSPKAGE . During ENFM, when SYSPKAGE is dropped, all packages containing CGTTs
When running a REBIND in DB2 10 NFM, REBIND will return an error message and no previous copy is stored.
Please refer to APAR PM81189 for further details on this problem.
KevinHarrison 1000005N52 Visits (2280)
There are some recent REORG issues that you should be aware of, but they do not affect directory or catalog REORGs.
PM69637 - Lost data on REORG if table has OBID=1. This defect applies to V9 also.
PM62449 - Lost data on REORG if table has OBID=1 in a segmented tablespace. V10 only.
PM73000 - Incorrect rows discarded with REORG DISCARD based on boolean logic conditions. V10 only.
PM68133 - REORG of an RRF PBG with growth of a new partition during the REORG and with zparm SPRMRRF set to DISABLE.
PM69073 - Same scenario as PM68133 but in addition requires that the REORG be materializing a pending alter.
PM61976 - REORG loads data into wrong partition if using SORTDATA NO (which is not the default). Caused by PE APAR PM44475.
PM66874 - Not specifically a REORG issue, but could occur during extend processing for REORG of LOB data.
PM63324 - REORG of multiple partitions of a compressed PBG tablespace can result in rows being compressed incorrectly
KevinHarrison 1000005N52 Visits (2283)
LOB integrity abend during REORG of DBD01. Fix - PM66874,
Issue with catalog/directory space growth. FIX - PM64226 resolve for LOBs only!
For the base SPT01 growth Fix in separate APAR PM74659 not available - this will take some time!
Unformatted pages in SYSDBDXA directory LOB resulting in abends. No broken LOB data. REORG of tablespace to correct. APAR PM64226 to resolve.
Directory LOB extend failure. Fixed with APAR PM66874
REORG abend. Broken aux index. Fixed with APAR PM68842
KevinHarrison 1000005N52 Visits (2069)
KevinHarrison 1000005N52 Visits (1835)
PM77111: SERVICEABILITY ENHANCEMENT PROVIDING NEW IFCID FOR RIDPOOL FULL CONDITION
This is currently still open
KevinHarrison 1000005N52 Visits (1690)
PM75711: SERVICEABILITY ENHANCEMENT TO PROVIDE DIAGNOSTIC LOGGING FOR UNEXPECTED PBG GROWTH ISSUE.
This PMR is still open, but should be monitored
agburke 060001QPDN Visits (2110)
I wanted to remind everyone that there is a very comprehensive website in developerworks that lists best practices for many topics from LOBs, to Utilities, to stored procedures.
The content includes downloadable presentations as well as pre-recorded webcasts so that you can walk through the slides as the moderator is presenting.
Here is the URL and a screen shot of the Monitoring and Tuning port
agburke 060001QPDN Visits (2028)
As many of you know IBM has changed the products that come in the DB2 Accessories Suite.
At one point we had the DB2 Management Clients Package which contained Visual Explain and Control Center, and anything that would be installed on your desktop.
Starting in DB2 9 for z/OS we changed it to the DB2 Accessories Suite which included things like Optimization Service Center, OmniFind Text search, and Spatial Support. Within that same release we deprecated OSC, and with DB2 10 for z/OS the Accessories Suite included only the spatial support and international Unicode support (ICU).
The link below breaks down which products appear in which release of the Accessories Suite, and relates it to the appropriate release of DB2.
URL for II14
Program Directory: V02.02.00
Program Number: 5697-Q02
FMIDs H2AF210, J2AG210 for use with z/OS <is the same, it has
IBM DB2 Accessories Suite for z/OS, V2.2 (5697-Q02) consists
of three features, each bundling components designed to
enhance your use of DB2 for z/OS. Component changes in this
o IBM SPSS Modeler Server Scoring Adapter for DB2 on z/OS
o IBM Data Studio V3.1.1
o IBM Text Search for DB2 for z/OS, which replaces IBM
Omnifind Text Search Server for DB2 for z/OS
o IBM Installable Information Management Software for z/OS
Solutions Information Center
agburke 060001QPDN Visits (2620)
CPU increase is always a customer concern, expecially when it occurs across a release boundary. Many of our customers in DB2 10 have seen a CPU reduction in the DB2 address spaces, and much of this can be attributed to the zIIP eligibility of asynchronous reads/ writes. However there have been some circumstances where the new monitoring or storage allocation behavior has affected CPU negatively.
Here are some APARs to address CPU degredation at the address space level.
PM56363 (HIPER): DIST TCB time increase due to remote SIGNON requ
agburke 060001QPDN Visits (2141)
As you may remember we published the workfile recommendations in informational APAR II14587.
This had to do with the SECQTY attribute and whether or not you set the WFDB
In DB2 10 we allow partition by growth table spaces in the workfile database, and these should be the 'most preferred' when it comes to DGTTs.
Here are 2 APARs that have to do with this functionality in DB2 10.
PM65767: DB2 10 NFM work file separation algo