We've noticed that when a remote synchronizes with our consolidated, a new log is not cut every time despite having -x 0M. We synchronize every 30 minutes. The log cutting is irregular and the remote can go for hours without cutting and then starting cutting. We tried pinpointing processes running at the same time that might be holding the live log file but couldn't find anything.

Wondering if any else has had this experience or if anyone can suggest something to look at?

Thank you.

asked 24 Aug, 13:18

user2359's gravatar image

user2359
363
accept rate: 0%

AFAIK log files always have a non-zero file size even when there's no real data in them... I have no idea what "-x 0M" really means, since there is no point renaming an empty log.

Are you starting dbmlsync.exe every 30 minutes, or having dbmlsync run continuously with a schedule via dbmlsync -e "sch=whatever"?

Is it possible there is nothing being written to the log file during the periods of non-renaming-deleting?

(25 Aug, 10:40) Breck Carter

> processes running at the same time that might be holding the live log file

It is unlikely that any such process can possibly exist. I just checked with notepad and it is locked out... don't laugh! Notepad can open files most other programs cannot.

SQL Anywhere live backup via dbbackup opens a client server connection to the SQL Anywhere server, rather than (AFAIK) directly reading the log file. I presume HA mirroring uses a similar path.

(25 Aug, 10:56) Breck Carter

We're running dbmlsync from a powershell script via a scheduled task that runs every 30 minutes. We've noticed that during working hours when clients are connecting to the remote is when the log cutting is most erratic and usually we won't see a log cut during those hours.

I believe we use "0M" only because it's recommended to have something after -x and would otherwise just have -x, with the log cutting to whatever size the live log was, which is what happens with 0M.

As for something holding the log file, that was just about the only thing we could think of.

(25 Aug, 17:38) user2359
Replies hidden

What does the following query return?

SELECT * FROM SYS.SYSOPTIONS WHERE "option" = 'delete_old_logs';

(26 Aug, 10:48) Breck Carter

delete_old_logs = OFF

(26 Aug, 12:19) user2359
Replies hidden

Consider changing that, so the old renamed logs get automatically deleted after dbmlsync no longer needs them. In spite of the Help saying otherwise, this is NOT just a SQL Remote option, it applies to MobiLink as well, and it is how many folks manage old logs. Personally, I like DELAY.

(27 Aug, 09:19) Breck Carter

What version and build are you using?

(27 Aug, 09:21) Breck Carter

version 17.0.9.4793

(27 Aug, 10:17) user2359

Try reporting this symptom to tech support.

...or perhaps, if it's not causing any errors, ignore it.

(28 Aug, 10:01) Breck Carter
More comments hidden
showing 5 of 9 show all flat view
Be the first one to answer this question!
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:

×314

question asked: 24 Aug, 13:18

question was seen: 81 times

last updated: 28 Aug, 10:01