Tuesday, September 29, 2009

Damaged SQLServerAgent Service Might Cause MDF Corruption

Microsoft SQL Server is an advanced RDBMS (Relational Database Management System), which include a service called SQLServerAgent for managerial operations of MS SQL Server, known as Jobs. This service executes the jobs and monitor the tasks for SQL Server. It is also able to process the SQL Server alerts. But in some situations, where the SQLServerAgent gets damaged, database might get damaged and become inaccessible. In these situations, you can not access your mission critical data from the damaged database and need to opt for SQL Recovery to get your data back.

In MS SQL Server, a job is usually a collection of steps that are particularly designed for the simplification of tasks of users. There are several functions that could be carried out through the jobs and information of these jobs is stored in SQLServerAgent. The critical functions include backing up the database that could be generated on regular intervals, specified as per users' choice. But if the functioning of this utility is aborted, then backup process might get terminated and some other database operations may also get terminated.

This utility tells you about the errors in the database, which occurs while executing the database jobs. But in case if the error numbers raise, which have six or more digits then heap corruption might take place in SQLServerAgent service. At this point, you might come across below error message in the sqlagent.log file:

“The ExecReAlloc memory operation failed (request [for 1508 bytes] occurred at line 2409 of function ODBCErrorHandler)”

In such circumstances, you would not be able to access the service and thus no database job will run. This behavior of SQL Server renders entire database inaccessible and cause MDF corruption. To gain access of your mission critical data in these cases, SQL Repair is required.

Cause

The major reason behind this problem is the routine for procession the errors in SQLServerAgent doesn't allocate disk space that is sufficient for storing errors numbers that is greater than 5 digits. To prevent this issue, Microsoft recommends you to use error numbers that are 5 digits long.

In case of corruption, you are required to repair and restore damaged database through SQL Recovery solutions. Recovery is best possible using third party applications. These tools are quite effective in most of the database corruption situations. SQL Repair using these applications is completely safe and easy.

Thursday, September 24, 2009

Simultaneous Execution of Two T-SQL Commands May Cause SQL Server Database Corruption

If you work on Microsoft SQL Server, you must know the actual value of T-SQL (Transactional Structured Query Language) commands. These commands help you to access and alter the Master Database File (MDF) in an easy and effective fashion. Other useful features of such commands include absolute control on transactions, error handling and row processing. This is recommended not to use such commands concurrently on same SQL Server database component, because it might cause serious corruption to database or its components. In such situations, the database become inaccessible and you come across critical data loss situations. At this point, to retrieve your valuable data from the database, you are required to carry out SQL Recovery using appropriate tools.

Outcomes of executing two T-SQL command concurrently

When you run two T-SQL commands at the same time on same database, database inconsistencies might occur and you come across some error messages. Take an instance of two T-SQL commands DBCC SHRINKDATABASE and DBCC DBREINDEX, which you run concurrently on any particular database table (Employee) of an SQL Server database. The DBCC SHRINKDATABASE command is used to shrink the database size, whereas DBCC DBREINDEX command is helpful in rebuilding the indexes in database table. In this scenario, you might encounter below error message:

“Error: 8909
Table Corrupt: Object ID 0, index ID 0, page ID (1:623). PageId in the page header = (0:0).”

The moment you encounter above error message, shrink operation on database table gets terminated. Furthermore, the Employee table becomes damaged and inaccessible. It generally occurs due to simultaneous execution of more than one T-SQL commands simultaneously.

In such critical situations, you need to find out the solution, which could perform effective SQL Repair on database and all of its objects. To handle minor consequences in the database table or the database, you can use DBCC CHECKDB command. This is an inbuilt command line utility of MS SQL Server.

However, when the DBCC CHECKDB command can not resolve database corruption problem, you need to go for SQL Recovery using third party tools. These applications are capable of handling most of the MDF file corruption situations.

They use high-end scanning algorithms to throughly scan damaged database and ensure absolute and easy recovery of all the database objects. This SQL Repair software is quite easy to use and thus do not demand sound and prior technical skills.

SQL Recovery is the most advanced and powerful software to successfully recover damaged SQL Server database. It works well with Microsoft SQL Server 2008, 2005 and 2000. This software is compatible with Microsoft Windows Vista, 2003, XP, 2000 and NT.

MDF Corruption After Transferring Data to sql_variant Column in SQL Server

When you use DBCC CHECKDB command on SQL Server database (MDF) file, you may face database inconsistency problems that could cause issues like database corruption. In case of corruption, SQL Server can not recognize the MDF file and thus data stored in it becomes inaccessible. To resolve MDF corruption issues, you need to repair and restore the MDF file using SQL recovery software.

The DBCC CHECKDB command might display error messages due to database inconsistency in your SQL Server database. It takes place when the underwritten conditions are true:

MS SQL Server loads data to the column which has a sql_variant data type.
The data gets created in another column which has a sql_variant data type and the data is sent on-the-wire by the SQL Server.
Data is sent either to an intermediate file or directly to another database server based on Microsoft SQL Server.
sql_variant column holds character values.

In case of database inconsistency, SQL Server may not work properly and data stored in the MDF file can not be accessed. Here are some examples of the SQL statements which could result into such behavior:

A BULK INSERT or BCP statement from the file which was originally created using SELECT statement or BCP IN command from the SQL Server.
Data load which is using the Data Transforming Services.
Data load which is using the SQL Server DMO Transfer Object.

In case of MDF file corruption, you may encounter the below given error message:

"Msg 2537, Level 16, State 43, Server MYSERVER, Line 1
Table error: Object ID 1977058079, index ID 0, page (1:75), row 0. Record
check (Valid SqlVariant) failed. Values are 4 and 0.
DBCC results for 'MyTable'.
There are 0 rows in 1 pages for object 'MyTable'.
CHECKDB found 0 allocation errors and 1 consistency errors in table.”

In case of corruption, MDF file repair is required to access data from the database. It is best possible using third party SQL Repair software. These software incorporate efficient scanning mechanisms to scan the damaged MDF file and extract all the data from it.

SQL Recovery software are result-oriented and easy-to-use tools that do not require sound or prior technical skills to achieve recovery of your precious data.

SQL Recovery is the most advanced and powerful SQL Repair application that ensures complete repair of your corrupt database (MDF) file. It supports Microsoft SQL Server 2005 and 2000. The software is compatible with Microsoft Windows Vista, XP, 2003, 2000 and NT.

Sysindexes.statblob Column Corruption after Running DBCC DBREINDEX Statement

After you apply the DBCC DBREINDEX T-SQL statement to rebuild one or more of the indexes for a database table in a particular SQL Server 2000 database, the indexes and statistics of the database may get damaged. This behavior results as data inaccessibility and database corruption which causes data loss. In order to resolve such behavior of Microsoft SQL Server 2000, you should opt for SQL Recovery solutions.

After running DBCC DBREINDEX statement on SQL Server database, the sysindexes.statblob column might get corrupted if the following conditions are true:

The table has a computed column.
Some columns in the table are referenced by more than one indexes or statistics.
The table is referenced by an indexed view.
You have re-indexed the table using DBCC DBREINDEX command.

Auto create statistics option is enabled for database.

When you run the DBCC CHECKDB command on the database, you come across the following corruption error messages on sysindexes.statblob column:

Server: Msg 8964, Level 16, State 1, Line 2 Table error: Object ID 2. The text, ntext, or image node at page (1:64), slot 29, text ID 6815744 is not referenced.
Server: Msg 2576, Level 16, State 1, Line 2 IAM page (0:0) is pointed to by the previous pointer of IAM page (1:88) object ID 1977058079 index ID 2 but was not detected in the scan.

Corruption to the sysindexes.statblob column might also damage the whole MDF file.

Sysindexes.statblob is a column of sysindexes table which is used by SQL Server to store statistics of a column or an index key. It is an image data type which stores a histogram with a sampling of values in column or index key.

The ultimate result would be the inaccessibility and loss of your mission critical data. Thus, you need to perform SQL Repair to resolve this problem and to get your data back.

This is best possible with the help of powerful third-party SQL recovery applications. These software use effective scanning mechanisms to thoroughly scan entire MDF file and extract all data from it. The software come with interactive interface and to-the-point documentation that enables you to perform SQL Repair on your own.

SQL Recovery is the most comprehensive SQL Repair software that can repair and restore damaged MDF files in most of the data loss situations. It can repair and restore MDF files of SQL Server 2005 and 2000. The software is compatible with Windows Vista, XP, 2003, 2000 and NT.

Wednesday, September 23, 2009

CHECKDB Fails to Fix Error 8909 and 8905

DBCC CHECKDB commands allow checking logical and physical SQL Server database integrity. When used with REPAIR_ALLOW_DATA_LOSS argument, it repairs all reported errors, but with the possibility of data loss. The corrupted data gets deleted in the process. But at times, when you run DBCC CHECKDB command with REPAIR_ALLOW_DATA_LOSS argument, database corruption is reported as fixed though is not corrected. In such situations, you can use your recent data backup to restore the database. But if the backup fails to restore or is not present, you need to scan your damaged database with powerful SQL recovery applications.

Consider a practical instance, you scan your SQL Server 2000 database and get 8909 error, followed by a group of eight or more 8909 error messages:

Server: Msg 8905, Level 16, State 1, Line 1
Extent (1:192) in database ID 10 is marked allocated in the GAM, but no SGAM or IAM has allocated it.

Or

Server: Msg 8909, Level 16, State 1, Line 1
Table error: Object ID 0, index ID 0, page ID (1:192). The PageId in the page header = (0:0).

Further, you use DBCC CHECKDB with REPAIR_ALLOW_DATA_LOSS option and it reports it as fixed. But again, when you run DBCC CHECKDB command to check database integrity, it reports the same error messages.

Cause

You encounter this issue when the following conditions are true:

You run DBCC CHECKDB on pages and extents that are allocated for sorting
Pages have field values such as Page type is set to SORT_PAGE (7), Index ID is 0 and Object ID is 0
You haven’t installed SQL Server 2000 Service Pack 2 or later.

Solution

To resolve the issue, you can follow any of these methods:

Install SQL Server 2000 Service Pack 2 and run DBCC CHECKDB command with repair_allow_data_loss option
Use DTS (Data Transformation Services) and transfer the database out.

If the above measures don’t help or the database still appears to be corrupt, you need to use efficient third-party SQL repair applications. These are the commercial tools provided to scan and repair damaged SQL Server databases. You can use these SQL Recovery products in any case of SQL database corruption.

SQL Recovery is the finest SQL Repair tool to scan and repair damaged or corrupt SQL Server databases. The software performs safe repair operations and restores all database components. It is compatible with SQL Server 2005 and 2000. The software supports Windows Vista, XP, 2003, 2000 and NT.

Assertion or MDF Corruption When You Import Data in SQL Server 2000

You may face database corruption or receive an assertion in SQL Server 2000 when you use the “Bulk Insert” T-SQL (Transaction Structured Query Language) command or BCP (Bulk Copy Program) utility to import data. In such situations, data from SQL Server MDF files can become inaccessible. SQL Database Recovery is required to overcome such issues.

BCP is a command line utility in SQL Server that is used in a script or batch file to automate the import and export processes through text files. To import data in a table, you must either understand the structure of table and types of data or use a format file designed for that table.

When you use BCP command line utility or Bulk Insert T-SQL command for importing data, MDF corruption may occur and you may get the following error message:

“Server: Msg 823, Level 24, State 2, Procedure gfspTMAppendText, Line 20 I/O error (bad page ID) detected during read at offset 0x0000000024e000 in file 'C:\Program Files (x86)\Microsoft SQL Server\MSSQL\data\'.”

You receive following information in error log of SQL Server 2000:

1.“DateTime spid53 SQL Server Assertion: File: , line=466 Failed Assertion = '0'.”
2.“DateTime spid53 Error: 3624, Severity: 20, State: 1.”

If you run DBCC (Database Consistency Checker) command like DBCC CHECKDB command to find and repair corruption in the database, you receive further error messages stating:

1.“Server: Msg 8909, Level 16, State 1, Line 1 Table error: Object ID 0, index ID 0, page ID (1:105). The PageId in the page header = (0:0).”
2.“Server: Msg 8928, Level 16, State 1, Line 1 Object ID 2009058193, index ID 255: Page (1:105) could not be processed. See other errors for details.”

Such SQL Server behavior causes critical data loss. You should figure out the cause to Repair SQL database and gain access of your lost data.

Root of this issue

You may experience assertion and MDF corruption problems, if following conditions are true:

You use Bulk Insert or BCP utility together with the FIRE_TRIGGERS option.
You import a database table which has an after trigger that updates the text column of another database table.

Resolution

You can fix database corruption with the help of SQL Database Recovery software. These are highly automated tools that completely scan the corrupted MDF file and extract all of its objects as tables, stored procedures, indexes, views, triggers, constraints etc.

SQL Recovery is the most advanced SQL Database Recovery tool. It can Repair SQL database components like tables, views, rules, stored procedures, defaults, user defined functions and data types along with triggers. It is compatible with Microsoft SQL Server 2005 and 2000. It supports Microsoft Windows Vista, XP, 2003 and 2000.

Tuesday, September 22, 2009

Index Corruption in SQL Server Might Damage MDF File

In Microsoft SQL Server, a database index is the data structure, which enhance speed of operations on database table. You can create database indexes using single or multiple columns of table, providing efficient access and random lookups of ordered records. The offer better management of data in SQL Server database and enhance improve performance. But in case if the database index gets damaged, you might come across serious problems. Index corruption might make your database inaccessible and cause data loss. At this point, you need to repair and restore the database using SQL Recovery solutions to gain access of your mission critical data.

In a practical scenario, when you attempt to access MDF (Master Database File) of MS SQL Server, you might come across below error message:

"Possible index corruption detected. Run DBCC CHECKDB."

After above error message, you can not perform any operation on the database and can not access data from it. In order to gain access of your valuable data, you are required to find out the cause of this problem and go for SQL Repair by sorting it out.

Root of the issue

This is an event log error message, which occurs when MDF file or its components gets damaged. The SQL Server database might get corrupted or damaged due to a number of reasons such as virus infection, software malfunction, improper system shutdown, registry errors and so forth. When any of the above situations occur, it might directly affect your business in terms of finance and decreased market revenue.

Solution

As recommended in above error, you could resolve this issue by using “DBCC CHECKDB” command on affected database. It is an in-built MS SQL Server command like tool, which checks the integrity of database, find errors and try to fix them.

But in case if this utility can not help you to resolve the issue, go for SQL Recovery software. These are advanced third party applications, which carry out efficient scan of damaged database to retrieve all of its objects including tables, reports, forms, triggers and stored procedures.

With interactive and simple graphical user interface, these SQL Repair software are completely easy to use and thus do not demand sound technical skills. They do not alter contents of the database as they have read-only approach.

SQL Recovery is the most excellent solution for all MDF corruption situations. It works well with Microsoft SQL Server 2008, 2005 and 2000. This softwre is compatible with Microsoft Windows Vista, 2003, XP, 2000 and NT.

Friday, September 18, 2009

Incorrect Configuration of SQL Server 2005 May Lead to Database Corruption

Microsoft SQL Server is the most advanced and widely used RDBMS (Relations Database Management System). It stores all of your critical data in MDF (Master Database File), in the form of tables. But in case if the SQL Server gets damaged, it does not allow you to properly mount the database and access data from it. There are several possible scenarios of SQL Server corruption, which include virus infection, application crash, improper system shutdown, file system corruption and operating system failure. All these situations cause critical data loss and require SQL Recovery to be sorted out. You should always opt for reliable and effective solutions for absolute recovery.

As as example of SQL Server corruption, when you try to start Microsoft SQL Server 2005, you might encounter below given error message:

"Could not start the SQL Server (SQL2005) service on Local Computer

Error 14001: This application has failed to start because the application configuration is incorrect.
Reinstalling the application may fix this problem."

Subsequent to above error message, MS SQL Server database become unmountable and inaccessible. The major reason behind occurrence of above error message is damaged or incorrect SQL Server configuration settings. In order to access database in these cases, you need to reinstall SQL Server 2005.

Although, reinstalling SQL Server might help you to carry out SQL Repair, but it is not safe at all. When you reinstall the application, data loss might take place. After you reinstall the SQL Server, the database might get damaged and it can not be reattached with the server.

The problems might occur due to SQL Server edition mismatch. MS SQL Server is available in 64-bit and 32-bit editions. The 64-bit edition uses Windows Installer to perfectly integrate installation of SQL Server characteristics in single feature tree. But if the hardware is not compatible with particular edition, the installation might fail.

No matter what the cause is, database corruption can not be accepted at any cost and it cause serious data loss issues. In these cases, you need to repair and restore the damaged database and retrieve all of its objects using third party SQL Recovery software.

These applications are particularly designed to perform in-depth scan of affected database and successfully restore it. The SQL Repair tools have interactive and simple graphical user interface to enable Do It Yourself recovery. With read-only and non-destructive conduct, they are completely safe to use.

Thursday, September 17, 2009

Damage Registry of SQL Server Agent Cause Database Corruption in SQL Server 2008

Registry is the most important component of Microsoft Windows operating system. Whenever you install a software (such as Microsoft SQL Server 2008) or hardware on your computer, a new registry hive is created. But in case if the registry entries of Microsoft SQL Server gets damaged, the database corruption might occur and it may become inaccessible. In such situations, you encounter data loss circumstances and need to go for SQL Recovery solutions to get your valuable data back.

For example, consider the below scenario:

In the clustered instance of MS SQL Server 2008, SQL Server Agent registry checkpoint is missing due to some unexpected corruption problems or deletion problems.
You repair clustered instance of MS SQL Server.

In above scenario, the Windows registry subkey, which is associated with MS SQL Server Agent isn't found in list of checkpoints of SQL Server Network Name resource. The resource is associated with clustered instance. Furthermore, updates for SQL Server Agent application configuration aren't propagated to other nodes of cluster when SQL Server group of resources move to those nodes.

Below is the registry subkey, which applies to the SQL Server Agent:

HKEY_LOCAL_MACHINE\Software\Microsoft\Microsoft\SQL Server\\SQLServerAgent

Resolution

In order to sort out this problem, go through underwritten steps:

Point to Start-> Run and type cmd and click OK button.
Type cluster . resource /checkpoints on command prompt and press Enter key.
Check whether the below registry key appears in the result of above command:
HKEY_LOCAL_MACHINE\Software\Microsoft\Microsoft SQL Server\\SQLServerAgent
If the registry does not appear, then type below command and press Enter key:
cluster . resource /addcheckpoints:"HKEY_LOCAL_MACHINE\Software\Microsoft\Microsoft SQL Server\\SQLServerAgent"

If this method can not help you to sort out the issue, then you are required to repair and restore the database to carry out SQL Repair. This is possible with the help of powerful third party applications, known as SQL Recovery software.

These tools use advanced and efficient scanning mechanisms to carry out in-depth scan of affected SQL Server database and retrieve all of the corrupt or inaccessible objects. The SQL Recovery softwre are generally easy and safe to use. They do not demand high technical skills.

Wednesday, September 16, 2009

Index Corruption in MS SQL Server Might Damage the Database

Index is the most critical component of a relational database. It ensures easy, quick and managed accessing of data from the database. In Microsoft SQL Server, a non-clustered index is an index that stores both logical and physical order of indexes and tables. But in case of corruption if the logical order of index doesn't match the physical order or rows on hard drive and thus you can not access data from the database. This situation generally occurs due to index corruption, which could be the outcome of self-update query, virus infection, improper system shutdown and may others. At this point, the database become inaccessible and you encounter data loss situations. To retrieve data in such cases, you are required to go for SQL Recovery using appropriate tools.

In a practical scenario, when you carry out any operation using self-update query on master table after which non-clustered index gets damaged or corrupted. Additionally, you encounter any of the below given error messages while trying to access any database table or entire database:

“Server: Msg 8952, Level 16, State 1, Line 1

Table error: Database 'badqueue', index 'repro.NC' (ID 1828201563) (index ID 2). Extra or invalid key for the keys:”

Or

“Server: Msg 8956, Level 16, State 1, Line 1
Index row (1:308:2) with values (i2 = 369 and i1 = 1 and ? = 61) points to the data row identified by ().”

After above error message occurs, you can not access master table and thus stored data and require SQL Repair. The self-update query select over 3,000 rows of master table but not entire master table. To gain access of master table, you are recommended to download and use hotfix solution offered by Microsoft.

But even after applying the hotfix, you get same error message and can not access the database, you are required to repair and restore damaged database. This is best possible with the help of powerful and efficient third party applications, known as SQL Recovery tools.

These applications use high-end scanning mechanisms to methodically scan entire SQL Server database and retrieve all of its objects including tables, reports, forms, triggers, stored procedures and so forth. With interactive and rich graphical interface, they are quite easy to use. The SQL Repair software do not alter original data in the database.

Sunday, September 13, 2009

SQL Recovery When Filestream Corruption Damaged SQL Server Database

When you try to restore the Microsoft SQL Server 2008 database (MDF file) from the sequence of transaction log backups, MS SQL Server 2008 database gets damaged. However, the original database, from which you took backup of the transaction log has not damaged. In these situations, the restore operation could not take place and thus your database become inaccessible and critical data loss situations occur. At this point, to gain access of your mission critical data, you are required to carry out SQL Recovery using appropriate solutions.

When the above problem of database corruption occurs, you might encounter the following event in the Application Event log of Microsoft SQL Server:

“Filestream corruption - missing files, error 7904.

The corruption is detected on a database that was restored from a sequence of backup logs. The original database does not seem to be corrupted.

7904 16 2 Table error: The filestream file for "FileID" was not found.”

In above scenario, the data loss situations occur. In such cases, you get your valuable data back, you need to find out the cause of this problem and go for SQL Repair by sorting out this issue.

Grounds of the issue

This behavior of Microsoft SQL Server occurs due to filestream corruption. When it happens, the SQL Server database gets damaged as stated in above error message, and the database become inaccessible.

The Filestream is a critical SQL Server database component that integrates SQL Server Database Engine with NTFS file system by storing the varbinary(max) BLOB (Binary Large Object) data as the files on file system. Win32 file system interfaces offer streaming access to data. It uses NT system cache for data caching.

In all these cases, you encounter database corruption and need to go for SQL Database Recovery solutions by repairing and restoring the database.

Recovery is best possible with the help of powerful and advanced third party applications, known as SQL Repair tool. They perform extensive scan of damaged database to extract all of the database objects such as tables, reports, forms, triggers and stored procedures.

These tools come equipped with interactive and simple graphical user interface and thus do not require sound and prior technical skills to carry out recovery process. With read-only behavior, they do not alter original contents of the database.

Stellar Phoenix SQL Recovery is the most advanced and effective tool to repair and restore SQL Server database in all cases of corruption. It repairs MDF files of SQL Server 2008, 2005 and 2000. This software is compatible with Microsoft Windows Vista, 2003, XP, 2000 and NT.

Wednesday, September 9, 2009

Damaged Stored Procedures Might Corrupt SQL Server Database

In DBMS (Database Management System) like Microsoft SQL Server, the Stored Procedures are the set SQL statements, which are stored in the database dictionary. The storage procedures improve security, usability and competence of SQL Server database. In general terms, this is a database query that is stored in compiled form with a name assigned to it. But in some situations, these critical database components might get damaged due to a number of reasons such as improper system shutdown and database inconsistency and make your database inaccessible by damaging it. At this point, you might encounter serious data loss situations that require SQL Recovery to be sorted out.

The stored procedures are generally used for data validation and for the access control mechanism. Additionally, these database objects are also used for consolidating and centralizing the logic, which was initially applied to the software.

The stored procedures are extremely useful objects of SQL Server database and provide substantial performance, abstraction, code rescue, reduced network traffic and most significantly improver performance like advantages. But in some situations, you might come across a number of issues while using the stored procedures.

In a practical scenario, when you attempt to see any stored procedure in SQL Server database with the help of Enterprise Manager of SQL Server, you might encounter below error message:

“Error 0: [SQL-DMO] Object 'dbo.SP_ProcName' was not scripted. It is possible that the information in system table 'syscomments' about the object was corrupt or missing?”

In such situation, you can not even delete the stored procedure by right clicking it and selecting 'Delete' option. At this point, finding the cause of this issue and carrying out SQL Repair by resolving it becomes essential.

Grounds of the issue

As stated in above error, this issue occurs because of corrupt or missing stored procedure. Damaged stored procedure might corrupt entire SQL Server database or some it its parts and make it inaccessible and unusable.

In these critical circumstances, you need to repair and restore damaged database file and retrieve data from it. This is potential through powerful and advanced third party SQL Database Recovery applications, which are capable of handling most of the SQL Server database corruption situations.

These tools use high-end scanning mechanisms to ensure in-depth scanning of damaged database and complete data retrieval. With interactive and simple graphical user interface, these SQL Repair programs are quite easy to use.

SQL Recovery is the most effective application to repair and restore damaged SQL Server database. It supports recovery from MS SQL Server 2008, 2005 and 2000. This read-only software is designed for Microsoft Windows Vista, 2003, XP, 2000 and NT.

Saturday, September 5, 2009

Insufficient Space While Upgrading Cause SQL Server Database Corruption

Every new version of a application or system software contains a number of added and advanced features. To gain benefit of these features, you might want to upgrade to newer version. The same thing applies of MS SQL Server. But in some situations, when you try to upgrade the SQL Server, the process may fail and some of the database tables or whole database might get damaged. This behavior of SQL Server renders all of your mission critical data inaccessible and causer serious data loss situations. At this point, to get your valuable data back, you are required to go for SQL Recovery using appropriate tools.

The problem during upgrade might occur if you fail to provide sufficient hard drive space for the database growth. In MS SQL Server upgrade, this situations might damage the sysdepends table in model database and might cause the upgrade process to hang (stop responding) without any warning message.

In these circumstances, you could not access the database and thus stored data. In order to gain access of your mission critical data, you are required to find out the cause of this issue and carry out SQL Repair by sorting it out.

Grounds of the Problem

You might come across this issue if the data file is full (it is possible that only a couple of pages are free in the file) and the growth of the file on data file is set to 0% (percent). In such case, SQL Server upgrade procedure does not get enough free space in the file, which is required to complete upgrade of database. Thus the SQL Server database (MDF file) is left in the partially upgraded and corrupt state.

Resolution

In order to sort out this problem, go through below steps:
Restore or replace the model data from most recent and complete backup.
Copy in model database from new MS SQL Server installation.
Increase the database size and enable AutoGrow option.

When all else fails to resolve the problem, then you need to opt for SQL Recovery through third party software. These applications are particularly designed to effectively scan the damaged SQL Server database and retrieve all of the data from it. The SQL Database Recovery is carried out in an easy, quick and safe way.

Stellar Phoenix SQL Recovery is the best ever made and the most advanced application to ensure absolute and quick recovery in most of the DBX corruption situations. It works well with SQL Server 2008, 2005 and 2000. This software is compatible with Microsoft Windows Vista, 2003, XP, 200 and NT.

Friday, September 4, 2009

Resolving “Server can't find the requested database table” Error in SQL Server

Microsoft SQL Server is the most popular and advanced Relational Database Management System (RDBMS), which is developed and marketed by Microsoft Corporation. The SQL Server enables you to use the T-SQL (Transaction Structured Query Language) to carrying out database transactions. T-SQL can be created to effectively manage SQL Server and to prevent unauthorized access of the database. SQL Server stores all of the data in MDF (Master Database File) in the form of several different tables. In some situations, these tables might get damaged and thus become inaccessible. This behavior of MS SQL Server cause critical data loss situations and require SQL Recovery to be sorted out.

Due to the advanced features, which SQL Server offers, there are several organizations who use it for effective management of their databases. But your decision of use the MS SQL Server might prove wrong when you can not get access of your mission critical data. In some situations, when you attempt to access the SQL Server database, you come across below given error message:

“Server can’t find the requested database table”

After this error message, you can not access the require database table and thus face data loss situations. In these cases, to get your mission critical data back, you need to sort out this issue by performing SQL Repair.

Grounds of the issue

The major reason behind the occurrence of this error message is corruption to the SQL Server database. The database might get damaged due to a wide range of reasons such as improper system shutdown, virus infection, application errors and many alike.

If the SQL Server database, which has got damaged, isn't so complicated and does not contain huge amount of data and objects, then you can rebuild the database easily. However, if the database is very large and complex, then you will have to go for SQL Database Recovery to retrieve data from damaged database.

The recovery is best possible with the help of powerful and advanced third party applications, which repair and restore damaged database. The SQL Repair applications carry out thorough scan of the damaged database and retrieve all of the data from it. With self-descriptive and interactive users, these applications are completely easy to use. These tools are completely safe as they have read only and non destructive conduct.

Stellar Phoenix SQL Recovery is the most efficient application to ensure absolute and easy recovery of damaged MDF files. This software works well with Microsoft SQL Server 2008, 2005 and 2000. This software is compatible with Microsoft Windows Vista, 2003, XP, 2000 and NT.

Wednesday, September 2, 2009

Troubleshooting SQL Server Error 2579

SQL Server database pages are 8 KB in size, each designated with a specific ID. The application uses extents as the basic unit to allocate space for tables and indexes. If these structures suffer any sort of corruption related concerns, you can run DBCC CHECKDB command to detect it. You can deduce the exact cause of the problem from SQL Server log that records all the results of running the command. However, to restore the corrupted table, you will need to use your current backup. But at times, you find issues while restoring from backup because it doesn't exist in valid state. You need to use SQL Repair software in such problems to repair the corrupt database and its objects.

Consider an instance, you run DBCC CHECKDB command to check database consistency and come across the below error message in SQL Server error log:

“Table error: Extent P_ID object ID O_ID, index ID I_ID is beyond the range of this database.”

This entry is marked with error ID 2579 and severity level 16.

Cause

Each page ID is referenced in the form- fileId:pageInFile. In the error message above, P_ID is the ID of the affected page in the table. Error 2579 occurs if pageinfile of the extent is found to be greater than the expected physical size of the file with ID fileID specified in the database. The error indicates that the extent has been allocated in an IAM page for the indicated index ID or object.

Solution

Following are the solutions to fix the above problem:

Such errors might be frequent due to hardware related problems. So, you should diagnose the system for the same and remove or replace the faulty hardware
Restore the database table from backup
Execute DBCC CHECKDB command to determine the repair clause that should be run to repair the database table. Next, run the suggested repair clause with DBCC CHECKDB command
If applying the above measures is not feasible, you need to use third-party SQL Recovery software. SQL Repair products are commercial tools embedded with high-end scanning algorithms and graphically rich user interface to allow safe and efficient database repair.

SQL Recovery is a premier and popular tool to repair damaged SQL databases that is supportive to SQL Server 2008, 2005 and 2000. With self-descriptive and exceptionally realistic interface, advanced repair options and non-destructive design, it is a fully-featured SQL Recovery utility to repair all database objects. The software is compatible with Windows Vista, XP, 2003, 2000 and NT.