Posted on Wednesday, March 23, 2011 at 11:43 PM
While working on your SQL Server database, sometimes the database tables become completely inaccessible following any corruption or damage to the database. The reason behind the corruption can be virus attack, file system corruption, application malfunction, simultaneous access by the number of users beyond the upper load limit etc. In any of these situations, the database flashes some sort of error message, which points toward a possible problem with the database. You need to resolve the error to regain access to the database tables. However, if you failed to resolve the issue, there are third-party SQL database recovery tools available, which can help you recover the database back.
The error message that you may have encountered can be read as below:
“Table error: Extent P_ID object ID O_ID, index ID I_ID is beyond the range of this database.”
After encountering the error message, you can not be able to access any record from the SQL database and receive the same error, each time you try to access any table...
Posted on Thursday, February 10, 2011 at 4:40 AM
If you are using a Microsoft SQL database for storing your valuable business transactions and financial information, then, any instance of database corruption can be a huge blow to your business. The damage to the database can result in the complete inaccessibility of the data stored n it. In such cases, you can run ‘DBCC CHECKDB’ from the command-line, which can repair and fix the MS SQL database errors. If with higher degree of corruption, the database DBCC CHECKDB fails to resolve the problem, you can always run an reliable SQL repair utility to accomplish the job safely.
Following are some of the error messages, which you may encounter, while trying to fix them with DBCC CHECKDB command:
“Server: Msg 8905, Level 16, State 1, Line 0
Extent (1:6945928) in database ID 8 is marked allocated in the GAM, but no SGAM or IAM has allocated it.
Server: Msg 8905, Level 16, State 1, Line 0
Extent (1:6945936) in database ID 8 is marked allocated in the GAM, but no SGAM or IAM has allocated it...
Posted on Sunday, February 06, 2011 at 10:35 PM
Most of the companies use Microsoft SQL server database for storing their database where database administrator handle all the issue for maintaining the database by the use appropriate SQL server commands. Microsoft SQL server database may be corrupted by Improper system shutdown, hardware failure, SQL Server malfunctioning, virus infection, hardware failure and many more. Once SQL server database gets damaged, the data stored in the SQL Server become inaccessible. In such scenarios, use latest and updated backup, if backup is not updated, then database administrator needs to used a third party SQL recovery software to repair mdf file.
Consider a situation, wherein a database administrator is working on SQL Server database and creating a report. While doing this, the Windows automatically restarts due to power failure. When database administrator restart the system, the SQL server database becomes inaccessible. When the database administrator tries to attach MDF manually, he encounters the given below error message:...
Posted on Friday, January 28, 2011 at 1:39 AM
Microsoft SQL Server database supports binary tree indexes for fast query. The pages of Binary tree index are known as index nodes, the top node of binary tree is known as root node. However, the middle nodes are known as branch nodes and bottom nodes are known as leaf nodes. If table indexes get damaged, SQL Server database shows an error message and you unable to access your SQL database. To resolve such situations, you should use your most latest backup and restore the lost data. Sometimes, backup fails to restore the database and thus, you need to use
SQL database recovery software.
You are working on SQL Server database wherein, You might get below error message:
Server: Msg 8936, Level 16, State 1, Line 1
Table error: Object ID O_ID, index ID I_ID. B-tree chain linkage mismatch. P_ID1->next = P_ID2, but P_ID2->Prev = P_ID3.
Root Cause of Problem:...
Posted on Thursday, January 20, 2011 at 9:28 PM
Sometimes when you want to update or delete SQL server database table and got an error message that shows your SQL server database table has been corrupted. This may happen by the several reasons some of them are improper system shutdown, virus attack, hardware failure, power failure and many more. At this situation you will be unable to access your SQL server database table. For fixing this problem you should use an advanced SQL server recovery software that will repair and restore your damaged SQL server database table.
Consider a practical scenario wherein, you may encounter the given below error messages while your are trying to update, delete or open an SQL server database table:
“Error: 644, Severity: 21, State: 5
Could not find the index entry for RID '1613b1000000100' in index page (1:189), index ID 7, database 'TestDB'..
Error: 8646, Severity: 21, State: 1
The index entry for row ID was not found in index ID 7, of table 2009058193, in database 'test644'.”...
Posted on Thursday, January 20, 2011 at 4:11 AM
Users can face consistent issues while working on MS SQL Server 2000 database. Reason being, plethora of errors can hit the database and create an abrupt working situation. Considering a real time scenario, user might come across following error message while working on MS SQL 2000 database:
Object ID O_ID, index ID I_ID: The ghosted record count (HG_COUNT) in the header does not match the number of ghosted records (G_COUNT) found on page P_ID."
Root cause for the above error is damage in the page definitions; this condition makes the record count in header different from the number of ghosted records on the P_ID page.
To resolve the condition, MDF recovery has to be conducted. The methods given below can be followed to fix up the troublesome conditions:
1. Run the hardware diagnostics to make sure there are no hardware errors, if hardware issues are present it will repair them.
2. Formatting the hard disk or reinstalling the operating system can also help in resolving SQL database errors...
Posted on Wednesday, December 08, 2010 at 4:17 AM
The technique used in locating and placing data in SQL Server Database is known as B-tree. A B-tree contains a tree-level page that maintains and stores a key value for each child page. In case, the child page is leaf-level page, then all records stored on the tree-level page should contain key values equal to or greater than the key value stored in parent page. However, in case the child page is tree-level page, then all records stored on the tree-level page should contain key value that is equal to the value stored in parent page. Corruption in B-tree results in changing the values of tree-level values, further resulting in the inaccessibility of database records. The best way to surmount any B-tree corruption scenario is by restoring the data from an updated backup. But, in case of absence of an updated backup, you will need to opt for an advanced sql database repair application that can repair your database and provide access to all inaccessible database components...
Posted on Monday, November 22, 2010 at 4:11 AM
The fast results of SQL queries is a result of b-tree indexes used by a SQL Server. A single B-tree consists of number of index nodes, root nodes, branch nodes, and leaf nodes that enable you to systematically store your data.
Corruption in any of the nodes (specially index nodes) can result into inaccessibility of records stored in the database. In most of these situations, you encounter an error message stating the exact cause. To surpass the above database inaccessibility circumstances, you will need to use restore the data stored from an updated backup. However, in absence of an updated backup or backup falls short to restore the required data, then you will need to search for advanced third-party sql repair application.
Consider a practical scenario, where you receive the below error message when you attempt view the records saved in your SQL Server database:
Table error: Object ID O_ID, index ID I_ID. B-tree chain linkage mismatch. P_ID1->next = P_ID2, but P_ID2->Prev =P_ID3...
Posted on Monday, November 22, 2010 at 3:58 AM
DBCC CHECKALLOC is a common command that is used by database users to check the consistency of disk space allocation. The command comprehensively examines the use and allocation of all pages in your specified database. However, if examining the pages, the command displays an error message, then it means that your database pages have been corrupted or damaged. Furthermore, the data stored in the database becomes inaccessible after the error message appears. An ideal way to access your data in such situations is by restoring the data from an updated backup. But if in case, your database backup has been corrupted or damaged, then you will need to use advance SQL Repair application to repair your database.
As a practical instance, you encounter the below error message when you run DBCC CHECKALLOC command:
"Table error: Page %S_PGID is allocated to object ID %d, index ID %d, not to object ID %d, index ID %d found in page header."
After the above error message appears, the data stored in the database becomes inaccessible...
Posted on Monday, November 15, 2010 at 4:41 AM
MS SQL Server database is build up of various metadata structure components like, pages, extent, etc. Pages are the smallest unit of data storage that store actual data. A combination of 8 adjacent pages makes an Extent. Corruption or damage in metadata structure primarily results in inaccessibility of records stored in your database. In most of the database corruption situation, you encounter an error message stating the cause for the error. For successful access of records stored in your database and overcoming hazards created by error message, an easy way is to restore the database records from an updated backup. But if in case, your backup file has been corrupted, damaged, or unreadable, then you will need to use advanced repair software that can comprehensively repair MDF files.
Consider a practical case, where you encounter the below error message when you attempt to access the records stored in your MS SQL Server database:
"Table error: Extent P_ID object ID O_ID, index ID I_ID is beyond the range of this database."...
Posted on Tuesday, October 26, 2010 at 3:45 AM
The PFS (Page Free Space) pages in the MS SQL Server databases are used to search for free space in the database tables. It holds a byte-map which contains one byte per page that is represented by P_ID. Sometimes, you are unable to read the PFS page that can happen due to database corruption. The corruption cases are caused due to various issues such as abrupt or improper system shutdown when the database is open, virus infections, etc. In such circumstances, you should try to recover SQL database using appropriate methods. If you are unable to workaround the issue, then you should use a third-party SQL database recovery software to address the problem.
Consider a scenario wherein you are facing the following error message while working on an MS SQL Server 2000 database:
"Object ID O_ID, index ID I_ID: Page P_ID could not be processed. See other errors for details."
Cause:
The most prominent cause of this problem is that the P_ID page was marked as allocated in a PFS page. But, when the page was read, the reading failed resulting in this error...
Posted on Friday, October 15, 2010 at 4:26 AM
In the MS SQL Server databases, the IAM (Index Allocation Map), GAM (Global Allocation Map), SGAM (Shared GAM) are different types of pages that are used to store the records on the hard disks. These pages combine together in an extent, which is used to hold the metadata of the databases. A lot of times due to the mismatching in these files, the database gets corrupt and does not work properly. In such cases, you should try to repair MDF file using appropriate measures. However, if the problem is not addressed, then there is a strong case of using a third-party SQL repair software.
Consider a situation in which you are facing the following error message while working on an MS SQL Server 2000 database:
“Extent E_ID in database ID DB_ID is allocated in both GAM GAM_P_ID and SGAM SGAM_P_ID.”
Cause:
The error has occurred because of corruption in the extents due to the irregularities in the IAM, GAM, and SGAM pages.
Resolution:...
Posted on Thursday, September 09, 2010 at 5:14 AM
In an MS SQL table, a text node is used to save the data that is stored in the rows of the records. Every text node contains a parent node and is formulated in either a B-tree or a heap format. At times, when the text node becomes damaged then you are unable to access the data in the tables. Such problems can occur due to various issues such as virus infections, hardware malfunctioning, database header corruption, etc. You should perform appropriate workarounds to repair MDF file failing which you can try a third-party SQL repair software to repair SQL database.
Taking a practical scenario into account in which you are getting the following error message while working on an MS SQL Server 2000 database:
"Object ID O_ID: Errors found in text ID TEXT_ID owned by data record identified by RID."
Cause: The primary cause of this problem is that there is corruption in a text node. Usually, Error 8962 and/or 8963 also appear with this error message...
Posted on Thursday, September 02, 2010 at 4:01 AM
An extent in the SQL Server databases is a collection of eight consecutive pages, whose details are stored in an IAM (Index Allocation Map) page. An IAM page stores the details of an object and index with the information of the previous and next objects as well. However, sometimes the IAM definitions get corrupt due to issues like header corruption, virus infections, damaged hardware parts, etc. For such cases, you can adopt corrective measures to rectify the issue. If none of the measures works, then there is a need of using a professional
MDF file repair software to perform MDF recovery.
Looking at a practical situation in which you encounter the following error while working on an MS SQL Server 2000 database:
“Page P_ID in database ID DB_ID is allocated to both object ID O_ID1, index ID I_ID1, and object ID O_ID2, index ID I_ID2.”
Cause:
This problem has appeared as the P_ID page is allocated to two different objects, which is incorrect...
Posted on Thursday, August 26, 2010 at 4:37 AM
Are you facing problems while using MS SQL Server 2008 database? Then, there may be chances that the database may have got corrupt. The database corruption can occur due to various reasons such as virus infections, abrupt system shutdown when the database is open, hardware problems, etc. Due to database corruption, you would not be able to access the database or face abrupt behavior. In such cases, you should perform appropriate SQL repair methods to solve the problem. If you are unable to repair MDF file, then you should use a third-party MS SQL repair software to do the needful for you.
Consider a scenario wherein you encounter the following error message while working on an MS SQL Server 2008 database:
"Table error: Object ID O_ID, index ID I_ID, partition ID PN_ID, alloc unit ID A_ID (type TYPE), page P_ID, row ROW_ID. Record check (CHECK_TEXT) failed. Values are VALUE1 and VALUE2."
Cause:
The root cause of such behavior is that the ROW_ID row (mentioned in the error message) failed the condition asked in the CHECK_TEXT...
Posted on Wednesday, August 25, 2010 at 4:52 AM
Write-caching is the best way to improve data write and read process of your Microsoft SQL Server. It enhances the data reliability and makes the database transactions faster. However, in some situations, it may also lead to database inconsistency and database corruption. The problem generally occurs if Microsoft Exchange Server computer shuts down abnormally before successful completion of particular transaction. In such situations, entire database become inaccessible and you encounter severe data loss. In order to get your precious data back in such cases, you need to opt for SQL Server recovery solutions, if backup is not updated.
As a practical example of this problem, consider the following scenario with your Microsoft SQL Server that has write-caching enabled:
SQL Server writers a log record for 100th page in database.
SQL Server log record is stored in a non-battery-based cache, however database engine is informed that log writer is successful...
Posted on Friday, August 20, 2010 at 9:36 PM
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http://www.americanchronicle.com/articles/view/177453. If you have still problem regarding mdf file corruption then have a look on this
repair mdf file software. This software may help you more.
Posted on Saturday, July 31, 2010 at 5:21 AM
You must have experienced cases of database corruption more often than not. When you face database corruption, you are unable to work further on the database. These instances can occur due to any arbitrary reason. Some of the most prominent ones could be unplanned system shutdown especially when the database is open, page header corruption, virus infections in the database, etc. You can repair SQL database by using few workarounds. However, if nothing works fine then using a third-party SQL repair software is the best option.
For instance, the following error message appears while you are working on an MS SQL Server 2008 database:
“Table error: alloc unit ID A_ID, page P_ID. The test (TEST) failed. The values are VAL1 and VAL2.”
Cause:
Such problem has happened as a database page, P_ID, has not passed auditing test because of page header corruption. You can refer to the error message where it is clearly shown that the TEST string has failed the test.
Resolution:...
Posted on Sunday, July 18, 2010 at 9:41 PM
In MS SQL Server database, a page is used as the most primitive unit of storage as the space allocated to every database file. And a collection of eight pages is called an extent, which is used to manage the pages. However, sometimes SQL Server is unable to read through the properties of these pages. Such problems can invariably occur due to various issues such as virus infections, power outages, hardware problems, abrupt system shutdown when the database is open, etc. In such cases, you should find out the exact cause of corruption and try to isolate it. If any of the methods do not succeed, then you should use a third-party SQL repair software to
repair SQL database.
Consider a scenario wherein you encounter the following error message while working on an MS SQL Server 2008 database:
"
Process ID %d attempted to unlock a resource it does not own: %.*ls. Retry the transaction, because this error may be caused by a timing condition. If the problem persists, contact the database administrator."...
Posted on Tuesday, July 13, 2010 at 5:33 AM
Are you using SQL Server 2008 in your organization to carry out enterprise solutions? If yes, then are you experiencing problems in using the database on a regular basis? If this is so, then there are chances that the database may have corrupted because of various reasons. Such reasons could be virus infections, power outages, abrupt system shutdown when the database is open, hardware malfunctioning, etc. In such cases, you should use appropriate corrective measures to repair SQL database. If you are not able to provide any solution, then you should use a third-party
MS SQL repair software to do the needful.
Consider a scenario wherein you get the following error message while working on an SQL Server 2008 database:
“Table error: Object ID O_ID, index ID I_ID, partition ID PN_ID, alloc unit ID A_ID (type TYPE). The off-row data node at page P_ID1, slot S_ID1, text ID TEXT_ID is pointed to by page P_ID2, slot S_ID2 and by page P_ID3, slot P_ID3.”...
