How to Fix Corrupt SQL Database? (Multiple IAM Pages Error 8947)

Global Allocation Page (GAM) of SQL Server File: An MS SQL Server file consists of various pages, which stores its allocation structures. One such page is the Global Allocation Page (GAM). It contains the information that is related to the allocated extents in that SQL Server file.

Index Allocation Map (IAM) Pages: Index Allocation Map (IAM) pages are the allocation pages that contain information of the extents that an index/table uses.

SQL Table Corruption Due to Multiple IAM Pages Error: Sometimes, you many encounter errors due to multiple IAM pages for a single object. Such types of errors indicate table corruption. The error you might encounter after such corruption in your SQL Server database table 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 Such Error Might Occur? If you are encountering the aforementioned error, then it implies that the IAM chain for the specified index has at least 2 IAM pages (P_ID1 & P_ID) covering the same GAM interval (interval is the file space used by the GAM page to map. It is approximately 4 GB). Every index, which is allocated from a GAM interval that has more than one extent, requires an IAM page for that specific GAM interval. For all GAM interval extents, an IAM page contains one bit for each extent. A set bit shows that the particular index is given to that index. A common reason for such multiple IAM pages error that you might be encountering can be hardware failure. SQL database recovery becomes necessary for you in this case.

How to Fix Damaged MDF File? You can perform the following methods for SQL database recovery:

• Replace Damaged Hardware: First of all, you must check if there is any issue related to hardware failure. For this, you can run hardware diagnostics and check your application, Windows & SQL Server error log. If such issue exists, replace the damaged hardware (if required).
• SQL Database Recovery from Backup: If you have a clean backup for your SQL database, then you can easily restore from it. But, if no such valid backup is there, then you can use a third-party tool.
• SQL Database Recovery using Third-party Tool: You can invest in an SQL MDF repair tool, which is an easy, efficient, safe and time-saving way to deal with the problem. One such powerful SQL database recovery tool is SysTools SQL Recovery software. It is a superior tool with a user-friendly interface and it employs advanced technology for efficient recovery and fast algorithms for quick MDF repair. This software can efficiently answer your questions like – “How to read corrupt MDF?” and “How to repair corrupt SQL data?” Overall, SysTools SQL Recovery software can perhaps be the most apt solution you can get for SQL database recovery.
  

FILESTREAM Corruption in SQL – A Phenomenal SQL Database Recovery Solution!

The process of storing and managing unstructured data was poor, prior to SQL Server 2008 release.

Earlier Approaches of Storing Unstructured Data
Before the release of SQL 2008, there were two approaches of storing unstructured data. One approach was of storing data in a VARBINARY or IMAGE column. This had transactional consistency and also reduced data managing complexities, but it was performance wise. The other approach was to store unstructured data as disk files and to store the file location in the table along with some structured data linked to it. This approach was good in terms of performance, but did not ensure transactional consistency.

FILESTREAM Feature – Efficient Storage of Unstructured Data
FILESTREAM feature was introduced with SQL Server 2008 for storing and managing unstructured data efficiently. This feature allows storing of BLOB data (like word documents, music file, image files, videos etc) in the NTFS file system. It ensures transactional consistency between the unstructured data (stored in NTFS) and the structured data (stored in table).

FILESTREAM Corruption – Error 7904
Sometimes, when you try to restore MS SQL 2008 database (MDF files) from transaction log backups, database gets damaged. You fail to perform restoration and thus MDF files become inaccessible resulting in data loss. Under such problem, you might encounter the error: “FILESTREAM corruption - missing files, error 7904.” At that time, if you want to regain access of your mission critical MDF files, you must perform SQL database recovery process using an appropriate MDF file recovery solution.

Original Database Might Not Be Corrupted
The database corrupted when you tried to restore the database from transaction log backups but the original database, from which the backup of transaction was taken, do not damages in most of the cases. In most of these cases, corruption happens on the database that was restored from a sequence of backup logs. The original database might not corrupt. “7904 16 2 Table error: The FILESTRWEAM file for "FileID" was not found.” You can get back your valuable data using a fine SQL database recovery solution to recover corrupt SQL database contents from corrupt MDF files.

A Phenomenal SQL Database Recovery Solution
SysTools SQL Recovery tool is perhaps the easiest and most efficient SQL database recovery tools available around. This MDF file recovery software performs an extensive scan of damaged databases to recover all database items like tables, reports, forms, triggers, stored procedures, etc. If you choose to repair SQL DB and recover corrupt SQL database using SysTools SQL Recovery tool then you will be gifted with a very simple interface which won’t require you to have any prior technical skills to execute the SQL recovery process. The software also has a read-only nature which helps to regain original contents of SQL database. In short, SysTools SQL Recovery software is a phenomenal SQL database recovery solution.

How to Recover SQL Data from Corrupt MDF Using a Phenomenal Software Solution?

SQL Server, a Microsoft product, is an extensively used database management application which is used in small as well large set ups because of its stable, efficient, dependable, strong, consistent and safe database management features. This Server stores information in .MDF files, which like other computer files are susceptible to corruption. Many unwanted reasons can cause corruption in MDF files of SQL Server like hasty improper system shut down, cache problem, hard disk failure, invalid database file header, internal program errors and other such unexpected reasons. Whatever be the cause of damage of MDF file, it leaves the users in tough and awful situation where the only though that comes to their mind is of data loss. When such damage occurs, a large amount of data like clients’ information, inventory details and other such important information can become inaccessible, which will be a great cause of concern for the SQL users. Damage of these mission-critical MDF files can completely halt many working processes in the organizations. And if this data is not recovered urgently, then it can result in an immense loss for the organization.

Most of the SQL database recovery tools available in the online marketplace that communicate with corrupt MDF files for data recovery are not that high performing. But, a software tool that can really perform phenomenally will save the organizations from going into the pit loss. Today, MDF file recovery is not a big deal if the user can fetch the right software at the right time to extract SQL data. Today, most of the data recovery software companies have the Demo versions of their tools, which is a great way of choosing the perfect tool. Users can try these Demos and see which MS SQL data recovery software is efficient enough for their need. The choice should be of such SQL data retrieval tool that can recover SQL data within minutes and which is easy to use, efficient in performance and cost-effective to buy. Just a scroll through the search engine like Google, would make you come across SysTools SQL Recovery tool, which is exactly the software for SQL data restore you might be looking for! It is an appropriate and cost-effective SQL recovery software solution.

3403 Error in SQL – Combat Data Loss with SQL Repair Tool

The SQL Server comprises of two fundamental elements; one is the “data files” and the other is the “transaction log files.” It is the transaction log file that records databases’ uncommitted transactions. Sometimes a problem arises when SQL Sever service unexpectedly shuts down to any unpredictable reason. After this accidental shut down, when the user tries to restart the server again, it analyzes all the SQL transaction log files. Now, if the transactions are not committed, then the changes that were performed as a part of those transactions are rolled back. But unfortunately, sometimes, this process of recovery does not successfully ends and thus leaving the database in the corrupted state only. In such situation, the user requires restoration from the last good backup. But, if no such backup is there or is damaged, then the only solution left with the user is to use an SQL database recovery tool for repairing MDF files which is the most apt and wise way for SQL database repair.

The error 3403
During the SQL Server database corruption, the user encounters the below error message:
Error 3403, Severity 22 During recovery initialization, page %ld was encountered. This page belongs to object %ld, not the log

Cause of SQL Server error 3403
When the MS SQL Server crashes, it itself tries to recover without user intervention. When this automatic recovery takes place, there happens a complete scan of transaction logs up till the last page. If a page is found which is allocated to syslogs but the page header object ID does not match with that of syslogs, in that case, error 3403 is displayed and recovery is failed. Recovering SQL server database using an outside solution for SQL database 3403 error fix is the only way out of this problem. Such recovery is not difficult with a highly reliable SQL repair tool by SysTools for restoring SQL server databases from .mdf files.

Reasons for such error display
Failed SQL recovery and display of 3403 error occurs due the following plausible reasons:
• An SQL server problem resulting in a bad write or page allocation
• The user updates the allocation page and SQL Server goes down prior to the writing of the transaction log page. So, on the time of automatic rebuilding of SQL database, it happens without the clearing of the transaction log pages and the old log entries still existing.

Solution for SQL database recovery
This situation can be dealt by checking the backup status. If there is an existence of a clean backup, then one should drop the damaged or corrupted database and should load it from the backup. But, in the case where no backup exists, the user should use professional help from a good SQL recovery application for repairing MDF files.

SysTools software for SQL database recovery
SysTools SQL recovery tool is a reliable SQL database 3403 error fix software that will facilitate SQL database repair quickly, easily without a flaw. So, to combat data loss try SQL repair tool of SysTools and become error free and tension free!