Tuesday, January 30, 2007

Optimization with DB2 for z/OS Version 8

Hi DB2 user,

Here are three presentations about DB2 for z/OS Optimizer, available on IBM wesbite:

- Control your own destiny, implementing DB2 for z/OS optimization hints
by Patrick Bossman (IBM SVL)
http://www.ibm.com/support/docview.wss?uid=swg27005489


- Autonomic Optimization in DB2 Version 8 and Beyond
by Terry Purcell (IBM SVL)
http://www.ibm.com/support/docview.wss?uid=swg27004785


- Major Optimization Enhancements in DB2 Version 8
par Terry Purcell (IBM SVL)
http://www.ibm.com/support/docview.wss?uid=swg27004786



Regards,

DB2usa.

Labels: ,


Tuesday, January 23, 2007

Asked and Answered (Robert Catterall) part 2

Hi DB2 user,

Here is a second set of Robert Catterall's Asked and Answered about DB2 for z/OS, published in DB2mag:


- Alternatives to Batch Processing
http://www.db2mag.com/qanda/2000q4_db2dba.shtml

- IMS vs. DDF
http://www.db2mag.com/qanda/2001q1_db2dba.shtml

- Can you have too many DB2 package collections?
http://www.db2mag.com/qanda/2001q1_db2dba2.shtml

- How can I refer a global temporary table defined in the calling stored procedure in the called stored procedure?
http://www.db2mag.com/qanda/2001q2_db2dba.shtml

- We are already at the 2G limit for the DBM1 address space and our machine is only an R95. Do you really have the same need to separate data sets by volume as much with the new DASD technologies?
http://www.db2mag.com/qanda/2001q3_db2dba.shtml

- How do I control which schema I want to use when I am using more than one in a program?
http://www.db2mag.com/qanda/2001q1_db2dba3.shtml

- How do you leverage 160 I/O channels in relationship to partitioning?
http://www.db2mag.com/qanda/2001q3_db2dba2.shtml

- You write that there's no good reason to use the simple tablespace. Why not?
http://www.db2mag.com/qanda/2001q3_db2dba3.shtml

- Is there a rhyme, reason, formula, or theory that can be used to determine the optimal number of tablespace partitions and their optimal size?
http://www.db2mag.com/qanda/2001q3_db2dba4.shtml

- Two questions about DB2 accounting reports
http://www.db2mag.com/qanda/2001q3_db2dba5.shtml

- Non-partitioned indexes (NPIs) are making inserts to one of my large tables time consuming. How would you deal with NPIs in this situation?
http://www.db2mag.com/qanda/020218.shtml



Regards,

DB2usa.

Labels: ,


Tuesday, January 16, 2007

IBM DB2 for z/OS Technotes

Hi DB2 user,

Here is a set of DB2 for z/OS Technotes available IBM website:

- How to get more extents without a DB2 outage?
http://www.ibm.com/support/docview.wss?uid=swg21051882

- Advantages of using CREATE INDEX with DEFER YES and then REBUILD INDEX?
http://www.ibm.com/support/docview.wss?uid=swg21251608

- What kind of performance enhancement is disabled if the outer join performance enhancement is turned off?
http://www.ibm.com/support/docview.wss?uid=swg21008980

- Empty DBRMLIB member after compiling with Enterprise COBOL using the CoProcessor and DB2 V8
http://www.ibm.com/support/docview.wss?uid=swg21239703

- Access Path Performance Issues
http://www.ibm.com/support/docview.wss?uid=swg21206998

- How can I keep DB2 for z/OS stored procedures address spaces (SPAS) that are managed by Workload Manager (WLM) from taking over the system?
http://www.ibm.com/support/docview.wss?uid=swg21239743

- Using the RELEASE(DEALLOCATE) bind option and one plan
http://www.ibm.com/support/docview.wss?uid=swg21114814

- Nested Stored Procedures
http://www.ibm.com/support/docview.wss?uid=swg21114994


Regards,

DB2usa.


Tuesday, January 9, 2007

z/Journal (October - November 2006 issue)

Hi DB2 user,

Articles from October - November 2006 issue of z/Journal are available online:
http://www.zjournal.com


- Top-10 Ways to Waste CPU Using DB2
by Susan Lawson and Daniel Luksetich
http://www.zjournal.com/index.cfm?section=article&aid=711


- To Rebind or Not to Rebind, Is That a Question?
by Craig Mullins
http://www.zjournal.com/index.cfm?section=article&aid=718


- The Laws of Database Administration
by Lockwood Lyon
http://www.zjournal.com/index.cfm?section=article&aid=719


- Managing DB2 Performance in a Multi-Platform Environment
by Jim Wankowski
http://www.zjournal.com/index.cfm?section=article&aid=709


Regards,

DB2usa.

Labels: , , ,