MSSQL 2008R2

[kaiholmes]

The situation is as follows:
MSSQL 2008R2
Base was copied into itself. As a result, mdf completely overwritten, there was only ldf.
The base was established and never backup, the log is not truncated.
mdf file size to rubbing was in the region of 300 MB
file size GB ldf 2,5
recovery model "full"
Is there any chance to recover?

 

[landenjuarez]

And you can get more helpful resources on following threads, where users share their knowledge about SQL databases

https://www.fixya.com/support/t25285738-creating_new_database_using_mdf_file
https://ccm.net/forum/affich-777411-creating-a-new-database-using-an-mdf-file

Last one variant provided for completely crashed .mdf and .ldf files, when other ways can't handle the situation https://repairsql.recoverytoolbox.com/ Recovery Toolbox for SQL Server

To find out what exactly gone wrong with database we tried following query
DBCC CHECKDB ('YOUR_DATABASE_NAME') WITH NO_INFOMSGS, ALL_ERRORMSGS
(It wasn't much helpful in my case . I am just posting here in-case it hepls other !)
After a while we run another block of code , to put the database in emergency mode
EXEC sp_resetstatus 'YOUR_DATABASE_NAME';
ALTER DATABASE YOUR_DATABASE_NAME SET EMERGENCY
DBCC checkdb('YOUR_DATABASE_NAME')
ALTER DATABASE YOUR_DATABASE_NAME SET SINGLE_USER WITH ROLLBACK IMMEDIATE
DBCC CheckDB ('YOUR_DABASE_NAME', REPAIR_ALLOW_DATA_LOSS)
ALTER DATABASE YOUR_DATABASE_NAME SET MULTI_USER
Finally we got database back online!