Quote:
but sometimes never finish
You must understand the the client (the computer running the sync job) must do a lot of calculations (calculations of checksums). That can take a lot of time is there are many BIG field (BLObs etc) and many rows. Also database servers at ISP often are very slow at the type of queries that the sync job needs.
The solution is to use the and options effectively so that no time is wasted doing a lot of calculations that there is no need to do.
I persoanlly have an example where the time for a sync job was reduced from 11 hours to 5 minutes using these options.
You can try if you can read this paper:
http://www.webyog.com/forums/index.php?showtopic=1507
I have a newer version that I can mail you, if you PM me your mail adress.