There are several pages are used by the MS SQL Server to manage and store its allocation structures. Among them a page is called Global Allocation Page (GAM). This page is used to store the information about the allocated extents in that SQL Server file. An indexed allocation map (IAM) page are use to store the information about the extents that an index/table uses.
Sometimes an error appears due to multiple IAM pages for a single object. This error indicates the corruption in table. Due to multiple IAM pages an error occurred that states
Server: Msg 8947, Level 16, State 1
Table error: Multiple IAM pages for object ID O_ID, index ID I_ID contain allocations for the same interval. IAM pages P_ID1 and P_ID2.
Why IAM Error Occur?
If this error occurred due to IAM sequence for the particular index has at least 2 IAM pages (P_ID1 & P_ID) covering the same GAM interval. Every GAM allocated interval that occupies more than one extent is requires an IAM page for that specific interval of GAM. The main reason of this error is hardware failure.
How to Fix Damaged MDF File?
You can perform the following methods for SQL database recovery:
- Replace Damaged Hardware: It is clear that this error occurs due to hardware damaging, so it is necessary for you to check the hardware that gets damaged and after finding replace those hardware immediately to avoid any big damage.
- SQL Database Recovery from Backup: After replacing the damaged hardware if error message still occurs then you have to restore your database by using any recently created backup file. Use any current backup of your database and restore your entire database by help of this backup file.
If you are unable to fix this error or SQL corruption by applying the above given method then you have to use any third party error MS SQL Repair Tool, this tool can able to fix errors completely and make your SQL database as previous. It is also very efficient and fast tool; anyone can easily operate this tool because it is very simple to operate. If you are getting any error message or your SQL file gets corrupted due to whatever reason then apply this free tool and make your SQL file error free.
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