August 6, 2014 at 9:36 am
I want to migrate sybase ASE 15 to sql server 2012. On test servers, I successfully used SSMA 5.3 to sync-up schema and then do data migration. It took me 10 hrs to complete. Our prod Sybase is an 24/7 OLTP with over 30 dbs and each db has couple hundreds tables. So I can't afford to have them down for 10 hrs.
Is there a way to continuous sync-up the data between Sybase and SQL Server?
Sybase Replication Server is not an option for me. I poked around with SSMA a bit and it seemed to only do the schema sync-up, not data sync-up.
Any opinion would be greatly appreciated.
Thanh Nguyen
August 7, 2014 at 11:10 am
Have you considered a phased migration approach ? By this I me migrating databases in 'discreet' groups. Granted you'll still probably have the same amount of down time overall, but your actual outages will be briefer.
RegardsRudy KomacsarSenior Database Administrator"Ave Caesar! - Morituri te salutamus."
August 7, 2014 at 12:09 pm
Thanks for your comments, Rudy.
'Phase' migration is not an option for me as those 30 dbs host one giant app. So very much all or nothing. I've talked to Microsoft SSMA engineer and learned that most likely they will include this feature 'continuous sync-up data between Sybase and SQL Server' in future version of SSMA since they've received quite a lot requests from big customers to add this capability. Anyways, in the meantime, per SSMA engineer, the only Microsoft solution is to use SSIS or t-sql MERGE to merge the data table by table. I guess...spending time to implement this custom solution and only use 'one-time' is not any DBA's favorite 🙂
Thanh
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