All Blog Posts (335)

AUTOBIND – Demystified – 1

Introduction:

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,…

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Added by Peter Hartmann on August 20, 2019 at 19:29 — No Comments

IDUG Db2 Seminars in Sao Paulo (Brazil) and México DF (México)

When I joined IDUG as a volunteer a few years ago I was surprised that IDUG were not providing any Db2 education in Latin Amercia. The majority of the events and user group activities were concentrated  in North America, Europe and Australia.

As a naive Spanish speaker I had a vision to extend IDUG into Latin Amercia. I am please to inform you that IDUG are hosting two events in Latin Amercia this…

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Added by Manuel Gomez Burriel on August 17, 2019 at 18:08 — No Comments

APPLCOMPAT and Advanced Triggers

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

Introduction:

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,…

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Added by Peter Hartmann on August 7, 2019 at 11:13 — No Comments

Group Buffer Pool - Changes by PH13045

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…

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Added by Peter Hartmann on July 30, 2019 at 12:27 — 2 Comments

Function level V12R1M504 and e.g. archive tables

V12R1M504:

With APPLCOMPAT V12R1M504 on e.g. SPUFI or DSNTEP2, one can no longer create segmented or classic partitioned table spaces. See knowledge center for this restriction.

A small marginalia is behind this restriction, if this is combined with another…

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Added by Peter Hartmann on July 19, 2019 at 9:57 — No Comments

RUNSTATS sampling enhancements

Introduction:

One of the major challenges for RUNSTATS is the sampling of the data rows e.g. for calculation of the COLCARD value in SYSIBM.SYSCOLSTATS and SYSIBM.SYSCOLUMNS.



The challenge is to balance the CPU resources used by RUNSTATS to calculate column cardinalities with high accuracy…

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Added by Peter Hartmann on July 17, 2019 at 10:38 — 1 Comment

Retrieval of current DSNZPARM and DSNHDECP settings

History:

With DB2 Version 9.1 for z/OS a new system supplied stored procedure SYSPROC.ADMIN_INFO_SYSPARM was delivered. As the name suggests, this routine can be called to obtain the current settings of the Db2 subsystem parameters (DSNZPARM) and the…

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Added by Peter Hartmann on July 16, 2019 at 8:04 — 6 Comments

Transferring ownership of Db2 objects in Db2 12

In Db2 12, you can transfer the ownership of database and system objects online if you are the owner of the object or have SECADM authority. You can use TRANSFER OWNERSHIP statements to transfer ownership of an objects to another authorization ID or a role, without any application changes.

For the full story on this new SQL capability, see the new Db2 12 GA feature series post, Transferring ownership of Db2…

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Added by Paul McWilliams on July 12, 2019 at 22:38 — No Comments

Asynchronous cross-invalidation (XI) for coupling facility (CF) cache structures, e.g. Db2 for z/OS group buffer pools (GBP)

Description of the new feature:

When Db2 in a data sharing environment writes a changed page to the GBP the same page in the buffer pool(s) of the other member(s) must be invalidated to avoid back level data access in this/these member(s). This invalidation is done by the cross invalidation (XI) feature which is a key functionality of data sharing and controlled by coupling facility…

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Added by Peter Hartmann on July 12, 2019 at 7:57 — No Comments

Announcing Db2 12 function level 505!

We're proud to announce that Db2 12 for z/OS function level 505 becomes available for activation when you apply…

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Added by Paul McWilliams on June 26, 2019 at 18:41 — No Comments

New blog post: PBR table spaces with relative page numbers - a Db2 12 Greatest hit

Partition-by-range (PBR) table spaces with relative page numbers (RPN) in Db2 12 for z/OS improve the usability, manageability, scalability, and availability for the largest tables in Db2 environments.



Read the full story in the Db2 for z/OS News from the Lab blog:

http://ibm.biz/BdzPr4…


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Added by Paul McWilliams on June 12, 2019 at 19:30 — No Comments

IDUG NA 2019 in Charlotte: RUG Leaders Luncheon on Tue, 4th, June.

IDUG are pleased to once again invite all Db2 Regional User Group (RUG) leaders attending the IDUG conference in Charlotte to join us for a RUG Leaders Luncheon on Tuesday, June 4, 2019, 11:40 AM - 12:40 PM, Craft City Social Club, Charlotte Sheraton.

This is a chance to connect with fellow Db2 RUG leaders while you learn about news and updates from IDUG and IBM. 

The objectives of this session…

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Added by Manuel Gomez Burriel on May 30, 2019 at 7:23 — 1 Comment

Announcing a NEW IBM Redpaper: IBM Db2 Analytics Accelerator V7 High Availability and Disaster Recovery

 IBM Db2 Analytics Accelerator V7 High Availability and Disaster Recovery

An IBM Redpaper publication

 

Published: May 14, 2019 ISBN: 073845768x

Explore online at: http://www.redbooks.ibm.com/abstracts/redp5536.html?Open

Authors: Ute…

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Added by Patricia Zakhar on May 22, 2019 at 14:47 — No Comments

New blog post: Simplified application compatibility for IBM Data Server Drivers and Db2 12 function levels

In Db2 12, APAR PH08482 simplifies the process of activating new function levels without impacting existing JDBC, CLI, and .net applications, and it possibly reduces the coordination effort required between Db2 administrators and application programmers, for activating new application…

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Added by Paul McWilliams on May 9, 2019 at 23:32 — No Comments

Create services for provisioning Db2 susystems (DBaaS) with the sample Db2 software services template

By Sueli Almeida and Paul McWilliams.

We recently published a sample Db2 software services template. As a service provider, you can use it to create services (DBaaS) to rapidly provision from scratch one or multiple standalone Db2…

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Added by Paul McWilliams on April 2, 2019 at 22:32 — No Comments

Unraveling the Mysteries of Insert Algorithm 2

Get some valuable insights on the uses and benefits of insert algorithm 2, including how-to information for monitoring and troubleshooting this performance feature.

Read the full story here: https://ibm.biz/Bd2U94

Added by Eric Radzinski on March 26, 2019 at 0:22 — No Comments

Enhancements to Insert Algorithm 2

Db2 for z/OS APAR PH02052 provides some significant enhancements to Insert Algorithm 2, which was introduced in Db2z 12 to provide faster INSERT throughput for unclustered INSERTs on universal table space objects that use the MEMBER CLUSTER option.

Read the full story here: https://ibm.biz/Bd2wDL




Always get the latest…

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Added by Eric Radzinski on March 13, 2019 at 19:51 — No Comments

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IDUG Db2 Tech Conference coming to San Paulo, Brazil and Mexico City! Register Now

Started by Surekha Parekh in What's hot ? Aug 15. 0 Replies

For the first time IDUG is hosting two events in Latin America. These seminars will bring together Db2 professionals from around the world for expert-led technical sessions and networking opportunities. This is your chance to connect! …Continue

Tags: Education

MSSQL linked server attaching to DB2 LUW

Started by Mike Jett in Application Development and DB2 Aug 15. 0 Replies

I am trying to create a linked server from MSSQL 2014  to DB2 11.1  I am able to create one linked server and get it to work with one DB.  I have not been able to figure out how to add additional catalogs(DB's).  Is it possible to use just one…Continue

Tags: server, linked

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