Re: [U2] [UV] odd write failure in 10.2.7
The freechain is a pointer in the header of a hashed file that begins a linked list of free blocks (buffers) that can be used for secondary group buffers (overflowed groups, oversized record data, etc.) as required. Each of the buffers on the freechain *should* be marked as free. Somehow a secondary group buffer has been added to the freechain in this file without being marked as free. Perhaps (given the size of your record) it was - should have been - released when an oversized record was either deleted or reduced in size by more than 1 separation. You should be able to identify the group address using a scan with uvfixfile or fixtool in trace mode, and investigate further with either of these tools (or, if you're really brave, filepeek). If you happen to know the key of the record for which the WRITE failed, then you might even be able to use the RECORD verb to determine the group number, and hence the group address, so that you can identify where to begin your diagnostic investigation more precisely. Problems on the freechain usually manifest as nothing wrong with the file until you hit the overflowed group or oversized record that points to this particular secondary group buffer. --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
RE: [U2] [UV] odd write failure in 10.2.7
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kevin King Sent: Monday, March 10, 2008 7:45 PM To: u2-users@listserver.u2ug.org Subject: Re: [U2] [UV] odd write failure in 10.2.7 Any triggers on the file? Nope, no triggers. -John --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
RE: [U2] [UV] odd write failure in 10.2.7
No index? Jerry Banker -Original Message- From: John Hester [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 11:56 AM To: u2-users@listserver.u2ug.org Subject: RE: [U2] [UV] odd write failure in 10.2.7 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kevin King Sent: Monday, March 10, 2008 7:45 PM To: u2-users@listserver.u2ug.org Subject: Re: [U2] [UV] odd write failure in 10.2.7 Any triggers on the file? Nope, no triggers. -John --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
RE: [U2] [UV] odd write failure in 10.2.7
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Hester Sent: Tuesday, March 11, 2008 10:04 AM To: u2-users@listserver.u2ug.org Subject: RE: [U2] [UV] odd write failure in 10.2.7 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ray Wurlod Sent: Tuesday, March 11, 2008 1:11 AM To: u2-users@listserver.u2ug.org Subject: Re: [U2] [UV] odd write failure in 10.2.7 [snip] Problems on the freechain usually manifest as nothing wrong with the file until you hit the overflowed group or oversized record that points to this particular secondary group buffer. Sounds like I should only ever see an error like this when writing to an existing hashed file. Because I'm still getting it even with a newly created and empty hashed file, and with a newly created and empty type 19 file, I'm thinking there might be a bug in 10.2.7 related to writing large records. I think I'll write a test program to write records with incemental size and see if I can reproduce the same error. Arrggh! The programmer was using a different file name in the code than the one that was actually opened, so I've been looking at the wrong file the whole time. That will teach me to make assumptions based on our naming conventions. The real file was type 30 and resizing it fixed the problem. Thanks, John --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
Re: [U2] [UV] odd write failure in 10.2.7
Any triggers on the file? On Mon, Mar 10, 2008 at 7:00 PM, John Hester [EMAIL PROTECTED] wrote: I'm testing a new RH ES 5.0 server running UV 10.2.7, and I'm getting an odd error message on a write to a file: -- Found buffer on freechain that is marked as in use. Possible file corruption can be fixed with RESIZE. Program PGMWB0001: Line 2977, WRITE failure. -- There is nothing wrong with the file. I tried replacing it and resizing it as types 2, 18, and 19. I tried separations of 4, 8, and 16. Obviously an empty type 19 file can't be corrupt, yet I get the same message every time. This same program works fine on UV 10.1.4 running on RH AS 3.0 writing the exact same record. This is a fairly large record (approx. 28K) but nothing odd in the data that I can see. Writes to all other files within the program work fine, and every other program I've tested so far is able to write normally. I can also write a short dummy record to this file from within the same program. Anyone familiar with this error? Thanks, John John Hester System Network Administrator Momentum Group (949) 833-8886 x623 http://www.themomgroup.com --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/ -- -Kevin http://www.PrecisOnline.com --- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
