Sometimes, while working in Microsoft SQL, it issues warning messages. A possible database corruption is the reason behind such alarming messages. Though many users ignore such messages and start experimenting with the database, which results in harsher instance of data loss or inaccessibility. Therefore, when your valuable data is lying in the database, handle it with extreme care and it would be wise to use any reliable SQL repair utility to repair the database and recover the data back.

After encountering the error or warning message, which gets flashed every time you try to open the database, the tables in the MS SQL database becomes completely inaccessible. Moreover, repeated occurrence of the error may result in more complex corruption of the SQL database. The error message that you may have come around can be as read as below:

Warning: Page P_ID, slot S_ID in Object O_ID Index I_ID Column COLUMN_NAME value COLUMN_VALUE is out of range for data type "DATATYPE". Update column to a legal value...

In MS SQL Server, the CHECKTABLE command is used to check the integrity of the database tables. To do this, it uses several parameters to perform different types of checks. However, if the table is corrupt then this command may not work and exit abruptly. Such database corruption may cause because of several issues including virus infections, hardware malfunctioning, etc. These cases can well be solved using appropriate corrective measures failing which you should use a third-party MS SQL repair software to do the needful.

Consider a scenario in which you are running the CHECKTABLE tool on a database in MS SQL Server 2000. However, the tool fails to execute and exits abruptly showing the following error message.

"CHECKTABLE terminated. A failure was detected while collecting facts. Possibly tempdb out of space or a system table is inconsistent. Check previous errors."

Cause:...

Microsoft usually recommends you to use a SAN (Storage Area Network) or locally attached hard drives to store your MS SQL Server database (MDF or Master Database File) because it optimizes the reliability and performance of Microsoft SQL Server. Use of the network database files (the files stored on NAS [Network Attached Storage] or networked server) isn't enabled for MS SQL Server. However, this configuration may damage your SQL Server database in some cases of system failure. In such situations, you must have an absolute backup of your significant database to extract inaccessible data from it. In the other case, you need to go for master database file recovery solutions to get your valuable data back.

Although, network file support is not enabled by default in Microsoft SQL Server, you can manually configure MS SQL Server to store all your database files on NAS storage server or networked server. The servers, which you employ for this configuration, must fulfill MS SQL Server requirements for write-through guarantees and data write ordering...

The DBCC CHECKDB command in SQL Server databases is used to check and repair any inconsistency in the databases. There are many extensions for this command that you can apply in various kinds of situations. However, at times when you this command finds any error on the system tables then it ends abruptly. Such cases can arise due to corruption in the database tables. In such situations, you should employ certain in-built workarounds to get the database repaired. If you are not able to recover the database using these methods, then you should use a third-party SQL database recovery software to recover SQL database.

Consider a scenario wherein you encounter the following error message while working on an SQL Server 2008 database:

"System table pre-checks: Object ID O_ID. Page P_ID has unexpected page type PAGETYPE. Check statement terminated because of an irreparable error."

Cause:...

Like other databases and files, Microsoft SQL Server database may also come across various corruption issues. The corruption can take place due to various reasons, including the internal database or SQL Server application issues and system related problems. One major system related problem, which can cause MDF (Master Database File) corruption, is I/O logical check failure. In such situations, the database becomes totally inaccessible and you come across severe data loss situations. In order to get your mission critical data back, you need to repair and restore the corrupt database using SQL database recovery solutions.

The I/O logical check failure can be indicated by various error messages, which includes the following one:

“Error 823 I/O error <error> detected during <operation> at offset <offset> in file '<file>'”...

The most basic unit of storage in an MS SQL Server database is a page, which accounts for 8 KB of size. And 8 such pages consist an extent thereby making 16 extents in 1 MB. An extent is used to allocate spaces for tables and indexes. The well-being of the database structure is absolutely essential for the database. However, at times problem arises in the structure of the database because of various reasons such as virus infection, power surges, human error, hardware failure, etc. In such cases, you should use appropriate measures to rectify the situation. However, if you are unable to do so then you should use a third-party SQL server recovery software to recover SQL database.

Consider a scenario wherein you encounter the following error message while working on an MS SQL Server 2000 database table.

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

Cause:...

Microsoft SQL Server provides you a powerful utility to check the integrity and consistency of both logical and physical components, known as DBCC CHECKDB. The utility checks database integrity in three different phases. In first phase, consistency of allocation structures in hard drive space is checked and integrity of all the database pages and their structures are checked in the second phase. In third and the last phase, catalog consistency is checked. If the tool encounters any kind of errors in any checking phase, the process gets terminated improperly. After this behavior, SQL Server Database remains in corrupted and inaccessible state. It leads to severe data loss situations and requires sql recovery to extract inaccessible data, if an updated backup is not in place...

In Microsoft SQL Server, you can copy bulk data between an instance of SQL Server and data file in user-specified format, using bcp utility. You can use this tool for exporting data from SQL Server tables or importing large number of rows into the SQL Server tables. However, in some situations, inserting data in SQL Server table using bcp utility may damage the database table and cause serious data loss. At this point, you have to use SQL Database Recovery software to repair the damaged table, if you do not have a complete backup in place.

In a practical scenario, you may come across an assertion when you import data in the MS SQL Server table, using Bulk Insert T-SQL command or bcp utility. The SQL Server database corruption may also occur in such situations. Furthermore, you might encounter the below 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\REPRO.mdf'.”...

MS SQL Server being a relational database management system (RDBMS) processes huge amount of data at any point of time. For this purpose, it uses the paging technique that involve splitting huge chunks of data into logical and manageable pages. These pages are sequentially related to each other and you can traverse back and forth on them. However, sometimes due to corruption in the database tables the page may not be able to function properly. Corruption happens because of various reasons such as abrupt system shutdown when the database is open, human errors, virus infections, power outages, etc. In such cases, you should take appropriate corrective measures to sort the issue. However, if you are unable to recover SQL table then you should use a third-party SQL recovery software to do so.

Consider a scenario wherein you are working on a database table in SQL Server 2000. You run the DBCC command on the table but it fails to complete. An error message is displayed, that is:...

MS SQL Server is a relational database management system (RDBMS) that is used for providing enterprise solution in many organizations. It is fast, reliable, scalable, and a very robust database server to work with. However, at times it can pose some problems due to virus infections, human errors, power surges, abrupt system shutdown while database is open, etc. Due to such issues, the database can become corrupt. In such cases, you should take appropriate corrective measures to resolve the issue. However, if you are not able to address the problem then you should use a third-party MS SQL server recovery software to recover SQL database.

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). Duplicate keys on page P_ID1 slot SLOT1 and page P_ID2 slot SLOT2.”

Cause:...