Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

Been there done that, got the t-shirt. Me to ops manager "we need to IPL ASAP due to CA-ACF2 CSA storage creep, CSA will run out very soon". Ops manager to me "no way we are going to IPL in the middle of the day". I told him do not call me when the system goes down tonight in the middle of

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

Fortunately nowadays the reorg is possible without maintenance window. BTW: I had similar situations and I learnt to reply "You may not allow me to stop production, but it WILL stop, despite on you decision, and your manager decision... However it likely will happen during peak hours, not at

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

YEP. management did not want to reorg a DB2 dataset with 100 extents. Did a batch update that failed when the 123rd extent filled. No more updates until reorg was completed, about 1995. On Fri, Jul 28, 2023, 12:08 Wendell Lovewell < 01e9c0ee0673-dmarc-requ...@listserv.ua.edu> wrote: >

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

Thank you for the confirmation Radoslaw. Whatever I tried with either VSAM or PDSe, I could not get more than 123 extents on a volume. But I also never found the right document to describe the 123-extent limit. SO, I guess there wouldn't be a reason for multiple format-9 records for the same

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

W dniu 27.07.2023 o 21:30, Wendell Lovewell pisze: Hi Bill. I can confirm that in a format-3 record with all 13 slots filled, the DS3PTRDS field points to the CCHHR of the next format-3. And the "next" slot in the format-9 record then points to the next format-3. I tried to confirm that

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

Hi Bill. I can confirm that in a format-3 record with all 13 slots filled, the DS3PTRDS field points to the CCHHR of the next format-3. And the "next" slot in the format-9 record then points to the next format-3. I tried to confirm that there will be a second format-9 record for a file with

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

On Wed, 26 Jul 2023 17:50:40 -0500, Wendell Lovewell wrote: >Thanks Bill, that's very helpful. > >Please let me see if I have this straight yet: > >- If there is a format-8 DSCB, there will be a format-9 DSCB. > >- If there are > 3 extents (which are handled by the format-1) but < 133 >extents,

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

Thanks Bill, that's very helpful. Please let me see if I have this straight yet: - If there is a format-8 DSCB, there will be a format-9 DSCB. - If there are > 3 extents (which are handled by the format-1) but < 133 extents, the format-9 record's DS9PTRDS will -> the first format-3 record. -

Re: Chaining format 9 and format 3 DSCBs in EAV VTOC

On Fri, 21 Jul 2023 16:46:26 -0500, Wendell Lovewell wrote: >Hello Listers, > >I have a question about how additional extents for a dataset are chained >together for files on EAV volumes. > >If I understand correctly: >- The format 8 record has slots to keep track of the first 3 extents of a

Chaining format 9 and format 3 DSCBs in EAV VTOC

Hello Listers, I have a question about how additional extents for a dataset are chained together for files on EAV volumes. If I understand correctly: - The format 8 record has slots to keep track of the first 3 extents of a dataset (DS1EXT1/DS1EXT2/DS2EXT3). - If there are more than 3