SqlServer-QA.net

Have you ever wondered about flushing databases? Well not quite possible to flush it straight away and not a best practice too on the live server, so what it is about and you need to know about transactions state when they occur. Say when the changes occur in a database the changes are formed as transactions that are held in buffer pool ...

There's been some discussion over on the SQL Server Central forums about database mirroring performance, and one question in particular on how to do index rebuilds on mirrored VLDBs. Remember that in database mirroring, the database has to be in the full recovery mode, so all index rebuilds are fully logged. It all comes down to the ...

Whenever the SQL Server is struggling to write the transactions to the disk, you would observe WRITELOG wait type within SP_WHO2 results. So when you observer such wait types then you should be worried on the disks performance, either you plan for shrinking the transaction log (which is a temporary workaround) or add a second log ...

As I mentioned in a previous post, one of the new features for database mirroring in SQL Server 2008 is log stream compression. There's a good explanation of what this is (along with some example workloads and performance graphs) on the SQL Customer Advisory Team blog so I'm not going to duplicate all that here. Basically, ...

Say which is better, having multiple transaction log backups files or single transaction log backup file during a recovery point of time. In my experience both of them doesn't make any difference and if you are performing further backup to tape then ensure to test them by restoring on to the standby server. This is a best practices than assuming ...

On one of the archive database (using SQL 2005) we have a monthly task to shrink the transaction log during every 1st week of the month, this is required due to clear up the space on one of the drives where the additional transaction log file located (its a long story that we cannot replace the hardware, as they are legacy components associated on ...

Yet anothe forums related question I would like to blog, as I have seen in my experience on newsgroups. There will be always a question asking about why Transaction log is filling up and blocking is ocurred when a DBREINDEX & CHECKDB processes are under execution. Well the reason is obvious that these DBCC statements are ...