|
View previous topic :: View next topic
|
| Author |
Message |
guruji
Warnings : 1
New User
Joined: 13 Apr 2007
Posts: 59
Location: Chennai
|
|
|
|
Hi,
I have a VSAM which has already got records in it. I want to add new records into it. Is it possible to increase the space available without droppping it and creating a new one?
Thanks,
Reni |
|
| Back to top |
|
 |
murmohk1
Senior Member
.jpg)
Joined: 29 Jun 2006
Posts: 1436
Location: Bangalore,India
|
|
|
|
Reni,
| Quote: |
| I want to add new records into it. |
What are you trying to do? Appending the records at end or loading records in the new vsam?
| Quote: |
| Is it possible to increase the space available without droppping it and creating a new one? |
How much space is available in the vsam? Has it completly occupied allocated space? |
|
| Back to top |
|
|
Bitneuker
CICS Moderator
Joined: 07 Nov 2005
Posts: 1104
Location: The Netherlands at Hole 19
|
|
|
|
| Run IDCAMS with LISTCAT and study the results. Check secundary allocations (16 reached?) and the CI- and CA-splits. Make sure you have enough FREESPACE when defining your clusters. |
|
| Back to top |
|
|
expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
|
|
|
|
VSAM can use 123 extents per volume, assuming that you have them specified. And multiple volumes, again only if specified. I think that with z/OS 1.7 and above that the number of extents may be elevated to 255.
CI & CA splits ............ These will affect the data distribution of the file, but depending on the RAID version in use, may or may not affect performance. But that's another story.
FREESPACE, again its effectiveness depends on the RAID technology that your DASD is using.
But, as suggested run LISTCAT and find out everything you ever need to know about your VSAM cluster.
Is this an ESDS or KSDS ? |
|
| Back to top |
|
|
|
|
