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 Migrating Databases from 2008 R2 to 2012

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jbates99
Constraint Violating Yak Guru

396 Posts

Posted - 2014-08-05 : 20:53:25
Of course, when you restore a 2008 R2 database to a 2012 instance, it goes thru several "upgrade" steps. The databases seem to be fine but is there anything else I need to do before putting these into production use?
Thanks.

gbritton
Master Smack Fu Yak Hacker

2780 Posts

Posted - 2014-08-06 : 08:12:30
1. Design a set of regression tests. Run these against 2008R2 and 2012 to ensure that the results are identical in all cases.
2. Perform extensive quality assurance against 2012 to validate the end-to-end experience
3. Run in parallel for some period of time (determined by the business)
0. (Really this should be the first step!) Design a fall-back plan so that if anything goes wrong when you put 2012 into production, you can quickly and easily fall back to 2008R2 with minimal downtime and no loss of data. TEST THE PLAN!!
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jbates99
Constraint Violating Yak Guru

396 Posts

Posted - 2014-08-06 : 08:41:49
Thanks, gbritton.
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jackv
Master Smack Fu Yak Hacker

2179 Posts

Posted - 2014-08-12 : 08:55:53
A useful task is to check on deprecated features being used , when the database is migrated to SQL 2012.
Perfmon can supply this information - this link shows you to use the counters - http://www.sqlserver-dba.com/2014/07/find-sql-deprecated-features-with-sysdm_os_performance_counters.html

Jack Vamvas
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http://www.sqlserver-dba.com
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