Some of the reasons causing such an issue are:
- The database didn’t shut down properly and there is at least one uncommitted transaction active during the shutdown, resulting in deletion of the active transaction log file.
- User tried moving the log files to a new drive to overcome server performance issues, but ended up corrupting the log files in the process.
- Database Recovery cannot be initiated due to insufficient memory space or disk storage.
ALTER DATABASE [DBName] SET EMERGENCY; GO ALTER DATABASE [DBName] set single_user GO DBCC CHECKDB ([DBName], REPAIR_ALLOW_DATA_LOSS) WITH ALL_ERRORMSGS; GO ALTER DATABASE [DBName] set multi_user GO
ALTER DATABASE [DBName] SET EMERGENCY; ALTER DATABASE [DBName] set multi_user EXEC sp_detach_db '[DBName]' EXEC sp_attach_single_file_db @DBName = '[DBName]', @physname = N'[mdf path]'