Smart Strategy to Recover From SQL Database Crash
By James Mascarenhas
Maintaining backup of mission critical data is of paramount importance for any organization which help to recover data with minimum downtime thereby avoiding any discontinuity in business activities. You need to include different backup strategies while keeping in mind the cost of its implementation, Recovery Time Objectives and Recovery Point Objectives. Consider the below mentioned measures in this regard:-
Full Backup
Differential Backup
Transaction Log
Full Backup: - Full backup process creates a complete mirror image of all the data. This is the safest and universally adopted method to recoup with the disaster. The point to take care is that even though this is the safest way but it is also time-consuming. If you want to restore data in the shortest possible time and your backup file is running to the tune of multiple terabytes, then you might need to re-strategize your plan before adopting this recovery mechanism.
Differential Backup: - In this type, a backup carries the new changes that took place since the last full backup subjected to the time specified in Differential Backup. Suppose you scheduled that the system should take complete backup every midnight and Differential Backup every 8 hours and due to some reason your database gets corrupted at 9:00AM. Now to restore and return to the state which was before the corruption you need to have the full backup plus the differential Backup but you will still be short of 1 hour database. To regain that 1 hour missing files you need to add the Transaction Log backup as well.
Transaction Log Backup: - Suppose you scheduled that the Transaction log Backup must take place every 30 minutes. Now we can compensate the one hour of database that we are short of by using the Transaction Log files.
But one must understand that it is not always possible to restore 100% data. If the same scenario would have taken place at 9:05AM then the company will lose whatever data that was not stored in that 5 minute of duration. So it totally depends upon the company to what extent they are ready to go to protect and keep their data.
Now coming back to the restore capability if the company only wants the latest data and can manage without the full Backup support they can restart their work by deploying only Differential Backup+ Transaction Log Backup or only with Transaction Log files, if the company can work smoothly with it. But before jumping the gun you need to apply all the backup combination necessary to meet the desired goals.
Specialized solutions are designed and developed by the company for the effective SQL database recovery and management. SQL Recovery software is the best example for such solutions from the company that helps user in the easiest way to restore SQL backup database after corruption issues are reported.
Article Source: Smart Strategy to Recover From SQL Database Crash
By James Mascarenhas
Full Backup
Differential Backup
Transaction Log
Full Backup: - Full backup process creates a complete mirror image of all the data. This is the safest and universally adopted method to recoup with the disaster. The point to take care is that even though this is the safest way but it is also time-consuming. If you want to restore data in the shortest possible time and your backup file is running to the tune of multiple terabytes, then you might need to re-strategize your plan before adopting this recovery mechanism.
Differential Backup: - In this type, a backup carries the new changes that took place since the last full backup subjected to the time specified in Differential Backup. Suppose you scheduled that the system should take complete backup every midnight and Differential Backup every 8 hours and due to some reason your database gets corrupted at 9:00AM. Now to restore and return to the state which was before the corruption you need to have the full backup plus the differential Backup but you will still be short of 1 hour database. To regain that 1 hour missing files you need to add the Transaction Log backup as well.
Transaction Log Backup: - Suppose you scheduled that the Transaction log Backup must take place every 30 minutes. Now we can compensate the one hour of database that we are short of by using the Transaction Log files.
But one must understand that it is not always possible to restore 100% data. If the same scenario would have taken place at 9:05AM then the company will lose whatever data that was not stored in that 5 minute of duration. So it totally depends upon the company to what extent they are ready to go to protect and keep their data.
Now coming back to the restore capability if the company only wants the latest data and can manage without the full Backup support they can restart their work by deploying only Differential Backup+ Transaction Log Backup or only with Transaction Log files, if the company can work smoothly with it. But before jumping the gun you need to apply all the backup combination necessary to meet the desired goals.
Specialized solutions are designed and developed by the company for the effective SQL database recovery and management. SQL Recovery software is the best example for such solutions from the company that helps user in the easiest way to restore SQL backup database after corruption issues are reported.
Article Source: Smart Strategy to Recover From SQL Database Crash
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