You are encouraged to keep your VSE system on a healthy service level. In order to do that it is recommended to update you VSE system to stay on a supported release and service level.

To order preventive service like PSP buckets or RSLs, please navigate to the preventive service page. To search for APARs and PTFs for a specific problem or component, navigate to the corrective service page.
For information on how to order and apply PTFs please refer to the How to order page.
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| November 1, 2009 |
z/VSE 4.1.2 & 4.2.1 RSLs upgraded to the September 30, 2009 level. |
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| September 1, 2009 |
z/VSE 3.1.3 RSL finalized at the July 31, 2009 level. 4.1.2 RSL upgraded to the July 31, 2009 level. 4.2.1 RSL created at the July 31, 2009 level. |
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| July 31, 2009 |
z/VSE V3.1 end of service |
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| July 15, 2009 |
Updated list of PTFs for ACF/VTAM V4.2 31-bit I/O Buffer support
In 2006 IBM introduced the ACF/VTAM V4.2 31-bit I/O Buffer support. This support needs additional PTFs for its full functionality. For a complete list of PTFs for z/VSE 3.1 or z/VSE 4.1 or z/VSE 4.2 see here.
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| July 15, 2009 |
z/VSE 3.1.3 & 4.1.2 RSLs upgraded to the May 31, 2009 level. 4.2.0 RSL upgraded to the April 7, 2009 level. |
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| May 28, 2009 |
Support for PAV is now available
Parallel Access Volume (PAV) is an optional licensed feature of the IBM System Storage DS8000 and DS6000, and IBM TotalStorage ESS series. It enables a single System z server to simultaneously process multiple I/O operations to the same volume.
PAV support is now available in z/VSE V4.2 with APAR DY46953/PTF UD53399 (01C) and UD53400 (01J).
Note: When running under z/VM and using z/VM's PAV minidisk support the ALIAS minidisks must be defined in the CP Directory for the guest (MINIOPT PAVALIAS). Using the CP command DEFINE PAVALIAS to dynamically define an alias might lead to z/VSE system hangs. |
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| May 15, 2009 |
z/VSE 3.1.3 & 4.1.2 & 4.2.0 Recommended Service Levels upgraded to the March 31, 2009 level. |
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| March 13, 2009 |
z/VSE 3.1.3 & 4.1.2 & 4.2.0 Recommended Service Levels upgraded to the January 31, 2009 level. |
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| January 15, 2009 |
z/VSE 3.1.3 & 4.1.2 & 4.2.0 Recommended Service Levels upgraded to the November 30, 2008 level. |
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| November 18, 2008 |
z/VSE 4.2.0:
During Fast Service Upgrade to z/VSE 4.2.0 VSE/POWER may terminate with message 1Q000 instead of intended message 1Q05I PAGEABLE AREA [nnnK] TOO SMALL... . This will happen when SIZE of VSE/POWER partition taken from previous system is too small and VSE/POWER can not load all of its phases.
If this this happens during step 2 of FSU, you should restart the old system and increase the VSE/POWER partition SIZE in FSU dialogue by specifying "OWN POWER PARAMETERS......... 1 (YES)" and then providing a larger SIZE (at least 1200K). After FSU or installation make sure that your ALLOC.PROC specifies SIZE=1400K (or more) for the VSE/POWER partition. For details of VSE/POWER partition usage see here. To correct message 1Q000 install DY46901. |
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| November 15, 2008 |
z/VSE 3.1.3 & 4.1.2 Recommended Service Levels upgraded to the September 30, 2008 level. |
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| September 15, 2008 |
z/VSE 3.1.3 & 4.1.2 Recommended Service Levels upgraded to the July 31, 2008 level. |
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