Peter Hartmann
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Why join "The World of DB2"?
Looking for "one stop shopping" for information, Looking for education, Looking for networking opportunities, Looking for news blogs and podcasts, Looking for information on local user groups
What information or education would be useful to you?
High Availability and Disaster Recovery
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Are you a member of a Regional User Group (RUG)? If so, which one?
What best describes your job role?
IBM Employee / Business Partner, Systems Programming

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Peter Hartmann's Blog

Db2 for z/OS support of z15 and z/OS 2.4

Posted on November 19, 2019 at 7:55 2 Comments


Is maintenance needed in Db2 for z/OS (V11 or V12) for a migration to

- the current hardware z15

- or the current operating system z/OS 2.4 ?

As of today there are no APARs/PTFs needed to tolerate such a migration.


The following…


Db2 and JCL 72 characters

Posted on August 28, 2019 at 18:39 1 Comment


Sometimes it is useful to generate JCL executable code for //SYSIN via SQL mass operations, e.g. change specific tables from one option to another. If the result row fits into one JCL line with a length of 72, then all is fine. If the line must be split, then the question comes up: How to split?

Here is a solution for commands (like REBIND PACKAGE), SQL (like ALTER TRIGGER) or…


AUTOBIND – Demystified – 1

Posted on August 20, 2019 at 19:29 0 Comments


AUTOBIND is a very useful automation instrument inside the Db2 engine.

Suppose you change the definition of the table or index and these changes have impact on the dependent package, the static SQL package is marked as invalid,…


APPLCOMPAT and Advanced Triggers

Posted on August 7, 2019 at 11:13 0 Comments

If you think you know all about APPLCOMPAT, then please read this!


Advanced triggers introduced in V12 allow SQL PL statements and this opens “SQL only applications” to triggers. There is reduced need to call a stored procedure,…


Group Buffer Pool - Changes by PH13045

Posted on July 30, 2019 at 12:27 2 Comments

Level setting:

A Db2 group buffer pool (GBP) consist of two parts:

1) Directory entries

2) Data entries

For each data entry there must be an associated directory entry in the GBP.

A directory entry can exist without a data entry in the…


Comment Wall (3 comments)

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At 8:43 on July 16, 2009, Toine Michielse said…
Hi Peter,

Ich arbeite im Moment noch bei UBS ( DB2 z/OS infrastructure consulting). (email:

At 8:15 on July 16, 2009, Toine Michielse said…
Hi Peter,

Wie geht's dir. Hoffe du weiss noch wer ich bin. Wir haben uns einige malen bei DB getroffen.

Toine Michielse
At 8:58 on June 12, 2009, Christian Daser said…
wo ist dein bild?

Bringing Db2 enthusiasts together virtually. Expert or novice, distributed or mainframe, this is the place for everything DB2.


Db2 11.5 External Tables on Line Lab

Started by Phil Downey in What's hot ? Mar 26. 0 Replies

Hi All, George and I built a new hands on Lab for working with Db2 11.5 External tables... takes you through how to define them, query them , dump to them and overall work with them in different scenarios ... takes about 20 minutes. give a try !…Continue

Revoking Sysadm from DB2 Z/os

Started by Chinnapureddy Jaya Prakash in Security and DB2 Mar 4. 0 Replies

Hi, We are having DB2V12 Level 100.  We are looking for best approach for two things1). 'Revoke Sysadm' from existed userids'. 2). Databases are created by userid. so we need to revoke implicitly granted access (like CreateDB, Load, DBADM,..etc).Can…Continue

Tags: (implicit, grants), Database, and, SYSADM

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