dbTalk Databases Forums  

Long query rollback - can I rename the table?

comp.databases.ms-sqlserver comp.databases.ms-sqlserver


Discuss Long query rollback - can I rename the table? in the comp.databases.ms-sqlserver forum.



Reply
 
Thread Tools Display Modes
  #1  
Old   
cheesey_toastie
 
Posts: n/a

Default Long query rollback - can I rename the table? - 03-08-2007 , 05:53 AM






I have a long query which I have set off and would like to stop, and
rename one of the tables used.

My query is due to my lack of understanding of the underlying
structure of MSSQL-Server...

So say and update updates TABLE_A and I stop it, whilst this
transaction is rolling back I attempt to rename TABLE_A to TABLE_A_OLD
and rename a different table to become TABLE_A. I am assuming that
the rollback actions will use the object reference of TABLE_A_OLD and
continue to rollback the effects on the correct table and not corrupt
'new' TABLE_A... or will it not allow me to rename TABLE_A until the
rollback is complete?

Thanks for any help!

Steve


Reply With Quote
  #2  
Old   
Dan Guzman
 
Posts: n/a

Default Re: Long query rollback - can I rename the table? - 03-08-2007 , 06:46 AM






Quote:
So say and update updates TABLE_A and I stop it, whilst this
transaction is rolling back I attempt to rename TABLE_A to TABLE_A_OLD
and rename a different table to become TABLE_A. I am assuming that
the rollback actions will use the object reference of TABLE_A_OLD and
continue to rollback the effects on the correct table and not corrupt
'new' TABLE_A... or will it not allow me to rename TABLE_A until the
rollback is complete?
I would expect that the rename will be blocked until the rollback completes.
The rename requires a schema modification lock, which is incompatible with
the locks held on TABLE_A by the open transaction.

--
Hope this helps.

Dan Guzman
SQL Server MVP

"cheesey_toastie" <bletchley_scum (AT) yahoo (DOT) co.uk> wrote

Quote:
I have a long query which I have set off and would like to stop, and
rename one of the tables used.

My query is due to my lack of understanding of the underlying
structure of MSSQL-Server...

So say and update updates TABLE_A and I stop it, whilst this
transaction is rolling back I attempt to rename TABLE_A to TABLE_A_OLD
and rename a different table to become TABLE_A. I am assuming that
the rollback actions will use the object reference of TABLE_A_OLD and
continue to rollback the effects on the correct table and not corrupt
'new' TABLE_A... or will it not allow me to rename TABLE_A until the
rollback is complete?

Thanks for any help!

Steve



Reply With Quote
Reply




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off



Powered by vBulletin Version 3.5.3
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.