In this article we explore key challenges and questions that are likely to arise during a SQL Server Backup Process
Back up process in SQL Server is more than just a set of commands issued for one of the most important functions in regards to SQL Server instance. Backing up data in SQL Server is a complex process that needs to be done with care and caution. A lot can go wrong during the backup process if not done properly, therefore it is important for the Database Administrator to be well versed with this process. They should not only know how to do it but also know how to deal with the challenges that they can encounter in the process.
Although there can be multiple challenges that one can come across during the process of backing up data in SQL Server, there is a list of common challenges or questions that Database Administrators often have, related to the backup process. The top three of those questions, with the answers are listed below, to help you guide through the challenges you may face during SQL Server Backup Process.
Q: Is there any way with which it is possible to examine transaction log for recovering lost data?
A: Depending on which recovery model you are currently making use of, for your database, you might be able to retrieve transitions from transaction log. Then you can also opt for replaying them for the purpose of recovering data.
Q: How to backup remote database?
A: A remote database is the one stored away from the main database; there are different approaches to backing a remote database:
- One of them is log shipping.
- You can also use Full Backup for backing up large amounts of data.
- Make use of third party tools for backup, which allow you to compress the size of backup files
- Write Full backup in multiple files, to enable sending them individually. Make use of a compression software like WinZip or others to compress these files.
- Make use of failover solutions from third party sources, which can keep boxes in sync. Some of these tools also come with compression capabilities, allowing you to share data through WAN.
Q: What can be done to create a smaller full backup?
A: Although there isn’t much you can do to reduce the size of a full backup, because while creating a backup, the whole of the database is backed up. What you can do is, check the size of the transaction log, and see if it can be truncated. This can help you contain the size of the transaction log. You can try rebuilding clustered and non – clustered indexes; this might help reduce the number of pages needed by SQL server to store data. Another way to create a smaller database is by scripting away the objects from the production database and recreating them on the test database.
Despite the Best Backup and Recovery Process You End Up Creating, Be Ready for Surprises
In the computing world, errors can occur in the most robust of systems and software. So even after putting in place an optimal backup and recovery process, you may encounter incidents of SQL crash where a direct recovery may be mandated. In such scenarios, you need to call in a recover sql tool like DataNumen SQL Recovery which has the capacity to completely recover all records from a messed up SQL file. This exemplary tool has the finesse to recover sparse columns and indexes besides having the bandwidth to deal with huge files running into terabytes.
Alan Chen is President & Chairman of DataNumen, Inc., which is the world leader in data recovery technologies, including access recovery and sql recovery software products. For more information visit www.datanumen.com