MS SQL Server use old log file location after detach/copy/attach -

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i create database "test" in folder "d:\test". database files "d:\test\test.mdf" , "d:\test\test_log.ldf". detach database ms sql server 2008 r2, copy files new folder ("d:\test_new"), delete log file ("d:\test_new\test_log.ldf"), , try attach database again new location. when use sql server management studio, , choose "d:\test_new\test.mdf" file, determines log file located in "d:\test\test_log.ldf" (old location). how can attach database rebuilding log in new location? imagine, cannot copy ldf file again new location, , still available there, sql server see anyway. want sql server - "please, forget log file, , create new log file here". it's better if me t-sql script, if steps in management studio - convert script myself.

what had tried already:

1.

create database [test]  on ( filename = n'd:\test_new\test.mdf' )  attach_rebuild_log

attaches log file old location (for attach - same)

2.

create database [test]  on ( filename = n'd:\test_new\test.mdf' )  log on ( filename = n'd:\test_new\test_log.ldf' ) attach_rebuild_log

returns error: unable open physical file "d:\test_new\test_log.ldf". operating system error 2: "2(file not found.)".

3.

 sp_attach_db , sp_attach_single_file_db

was tried too. , had checked source codes - create dynamic sql , call create database ... attach statement.

the question changed to: "is possible?"

update

well, looks it's not possible current versions of sql server. if knows way - please, pleased know too!

edit2: knowledge, not possible sql server recreate log file. can shrink ldf, not create when mdf exists.

when copy files d:\test\ d:\test_new\, do not delete d:\test_new\test_log.ldf.

leave log file there, because cannot reattach new db without log file. afterwards, can shrink log minimum size.

so, synthesize:

  1. copy files d:\test\ d:\test_new\ , leave log file there.
  2. run create database script posted in question (point 2).
  3. run following script shrink log minimum size

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use test go dbcc shrinkfile(logicalfilename, 1) go

to find out logicalfilename is, run sp_helpfile, give logical file name log file:

use test go exec sp_helpfile go

more info here

edit: think need first detach test database old location:

(you might create script all, following commands)

c:\> osql -e  1> sp_detach_db 'test' 2> go  3> quit  c:\>

then copy files new location.

c:\> copy d:\test\* d:\test_new\*

next, attach test db new path location:

c:\> osql -e  1> sp_attach_db @dbname = n'test', @filename1 = n'd:\test_new\test.mdf', @filename2 = n'd:\test_new\test_log.ldf'  2> go  3> quit  c:\>

to test if new database attached:

c:\> osql -e  1> use test 2> go  3> quit  c:\>

if there no errors after go command, ok

hope helps

microsoft article on how move files


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