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 Thursday, January 27, 2011 at 3:36 AM
A transaction log is an important component of database which is often ignored or overlooked as it is not regularly maintained or used by the database administrators or users. It keeps track of all the changes made to the database and maintains a separate data file to store the actual data. Transaction log backup and the corresponding data file backup can be used to perform database recovery in case of a corruption and restore the database to its original state. But the transaction log may get corrupt due to several reasons, such as installing wrong drivers, virus attack, hard drive failure, system table corruption etc. In such situations, the transaction log may become inaccessible and thus, you may not be able to restore your database. To overcome this problem, you need to go for SQL database recovery through a reliable third party utility.
While trying to access a corrupt transaction log, you may see the following error in ERRORLOG or Windows Application Event Log:...
Posted on Monday, January 24, 2011 at 4:30 AM
The metadata structure of SQL Server database comprises of numerous Index pages, which further consist of data pages. The data pages at each level of Index page are linked in a doubly-linked list. Inaccessibility of data stored in the data pages primarily occurs due to breaking of linked list (metadata structure corruption). Additionally, it also results in unmountability of the database. Few main reasons for metadata structure damage are improper system shutdown, virus hits, or physical damage. An easy solution to overcome the metadata structure corruption situation, you will need to restore the data from an updated database backup. However, with case studies proving that database users tend to forget to create an updated database backup, it is always handy to take help of third-party sql database repair applications.
Picture a scenario, where you receive the below error message while you attempt to mount your SQL Server database:...
Posted on Monday, January 17, 2011 at 5:30 AM
Microsoft SQL Server is a reliable and advanced database management system that provides you various database management and SQL database recovery algorithms. DBCC CHECKDB is one of the most advanced SQL Server commands that helps you repair corrupt database. However under some situations, this command fails with an error and cannot repair damaged database. This behavior leads to critical data loss and requires
SQL Server recovery to be fixed.
DBCC CHECKDB command may not recover SQL Server database due to various reasons, such as metadata structure corruption, system table damage, and faulty database index. For instance, consider the following error message that occurs when you try to perform MS SQL recovery using DBCC CHECKDB command-
"Database MyDB: Check Data and Index Linkage...
Microsoft SQL-DMO (ODBC SQLState: 42000)] Error 8921: [Microsoft][ODBC SQL Server Driver][SQL Server]CHECKTABLE terminated. A failure was detected while collecting facts. Possibly tempdb out of space or a system table is corrupt. Check previous errors...
Posted on Thursday, December 23, 2010 at 4:42 AM
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:...
Posted on Wednesday, December 08, 2010 at 4:05 AM
Structured query language (SQL) is a database computer language designed for managing data in RDBMs developed by Microsoft corporation. It has two primary query languages, ANSISQL and T-SQL. It offers the facility to access SQL Server database from anywhere, be it from your desktop or data center. It also provides combined services to search, query, report synchronize and analyze the database records. Sometimes it may happen that the SQL Server is unable to run. It may possible that the master database of SQL Server has gone damaged. This can be possible because of several reasons such as human errors, virus infections, power outages while SQL Server was open. In that case, you should replace the damaged database with its clean and backup. However, if the backup is not clean and updated then you should use an advanced sql recovery software to recover SQL database.
Consider a case wherein you have Microsot SQL Server installed on your machine. When you try to log on to the SQL Server, you are unable to do and an error message is appered, that is:...
Posted on Friday, December 03, 2010 at 5:21 AM
A page header in a database page is the first 24-bytes of the page that contains the general information about the page such as the details about the free space pointers. It is, thus, a significant part of the database page, which can pose problems if it gets damaged. The page header damage is possible in different circumstances such as virus infections, unplanned system shutdown when the database is open, power outages, etc. In such cases, you should repair SQL database using appropriate corrective measures. However, if these methods do not work for the database then you should use a third-party MS SQL repair software to perform SQL database recovery.
Let us consider a situation wherein you are getting the following error message while working on the MS SQL Server 2000 database:
"Table error: Allocation page P_ID has invalid PAGE_TYPE page header values. Type is TYPE. Check type, object ID and page ID on the page."
Cause:...
Posted on Thursday, December 02, 2010 at 4:18 AM
An IAM (Index Allocation Map) is a page in the database that stores one bit per extent in all the GAM (Global Index Map). A set bit is used to point out that the extent is allocated to that particular index. At times, this convention is not followed as two IAM pages refer to the same GAM interval. Lot of times, this problem is caused due to database corruption, which in turn, can occur because of virus infections, database header corruption, abrupt or unplanned system shutdown, etc. There are several methods that can be used to achieve MDF file recovery. However, if you fail to do so then you should use a third-party
SQL recovery software to do the needful.
Let us assume a situation in which you are getting the following error message while working on the MS SQL Server 2000 database:
“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.”...
Posted on Wednesday, September 01, 2010 at 3:20 AM
Are you getting some table errors while working on MS SQL Server 2000 database? At times, these errors appear because of database corruption, which can be caused due to various reasons including header corruption in the MDF (Master Database File) file, virus infections, etc. Such corruption issues can make the SQL database vulnerable and may make it inaccessible. In such cases, you should use a third-party SQL database recovery software if you are unable to recover SQL database using any workaround.
Let us have a look at a practical situation in which you are getting the following error message while working on a database table in MS SQL Server 2000:
“Table error: Cross object linkage: Page P_ID1, slot S_ID1, in object ID O_ID1, index ID I_ID1 refers to page P_ID2, slot S_ID2, in object ID O_ID2, index ID I_ID2.”
Cause:
The root cause of this problem is that the P_ID1 page points to a P_ID2 in a different object.
Resolution:...
Posted on Wednesday, July 07, 2010 at 5:34 AM
The system catalogs in SQL Server databases are used to store various types of information such as number and names of tables and views in the database among many others. This information is collectively referred as metadata. However, sometimes this metadata may get corrupt due to various reasons such as virus infections, hardware issues, power outages, etc. In such cases, you should use the in-place methods to rectify the problem. However, if you are not able to recover SQL database, then you should use a third-party
Repair SQL database software to do the needful.
Consider a scenario wherein you encounter the following error message while using the DBCC CHECKNAME tool on an SQL Server 2008 database:
"Database 'DBNAME': consistency errors in system catalogs prevent further DBCC CHECKNAME processing."
Cause:
There could be the following causes for this error. They are:
The system base tables are storing the metadata for all the objects in the database...
Posted on Wednesday, June 30, 2010 at 4:59 AM
MS SQL Server 2000 is used to provide enterprise solution in many reputed organizations. The primary reasons behind this are that it is simple to use, scalable for huge databases, provides strong support for demanding situations, etc. However, having said that, the database tables may sometimes become corrupt thereby disabling you to use it properly. Such issues can occur due to virus infections, power outages, damaged hardware components, etc. You should inquire for the cause of the corruption and try to recover SQL database. If you are not able to resolve the issue, then you should use a third-party SQL database recovery software to perform
SQL server recovery.
Consider a scenario wherein you encounter the following error message while working on an SQL Server 2000 database.
"
Table error: Object ID O_ID, Index ID I_ID. Duplicate keys on page P_ID1 slot SLOT1 and page P_ID2 slot SLOT2."
Cause:...
Posted on Thursday, June 17, 2010 at 4:39 AM
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:...
Posted on Wednesday, June 09, 2010 at 5:00 AM
In Microsoft SQL Server, if any transaction violates the integrity constraints during execution, database inconsistency occurs. The transaction leaves your MS SQL Server database in illegal state and it gets aborted with an error. Database inconsistency leaves your MDF (Master Database File) in an unusable and inaccessible state, which can lead to serious data loss. In such cases, a valid and updated backup come for your rescue. You can easily restore all your valuable data from current backup and prevent needs of
SQL recovery using third-party applications.
However, in case you are unable to restore data from the backup or backup is incomplete, you can check the database errors and fix them using inbuilt utility of Microsoft SQL Server, called CHECKDB. It offers you an option to repair the database errors. Database inconsistency may also occur due to system level errors, like file system and hardware. You are highly recommended to fix these errors before repairing the database, else you may face the same problem again after some time...
Posted on Friday, June 04, 2010 at 5:11 AM
Microsoft SQL Server includes an inbuilt utility, called DBCC CHECKDB, to check the consistency and integrity of MDF (Master Database File). However, sometimes the DBCC CHECKDB process does not complete successfully and can not fix the associated issues. Database inconsistency can make the SQL Server database inaccessible and lead to severe data loss situations. In such cases, you need to
recover SQL database, in order to extract data from it.
When you execute DBCC CHECKDB on an SQL database, an error message similar to the following one, appears in ERRORLOG of Microsoft SQL Server-
"2010-03-31 22:07:06.34 spid53 DBCC CHECKDB (mydb) executed by MYDOMAIN\theuser found 15 errors and repaired 0 errors. Elapsed time: 0 hours 0 minutes 0 seconds. Internal database snapshot has split point LSN = 00000026:0000089d:0001 and first LSN = 00000026:0000089c:0001. This is an informational message only. No user action is required."...
Posted on Tuesday, June 01, 2010 at 5:25 AM
Are you getting 'Error 823' while accessing an SQL Server database or modifying the database? Are you getting various database inconsistency errors while querying SQL Server database? Well, the problem may take place if your SQL Server database is either inconsistent or damaged. In such critical situations, you must have a complete backup to restore data from it. However, the situations may become worse if there is no current backup in place. At this point of time, you have to opt for
SQL recovery tools to get your valuable data recovered.
You may come across the below errors in Windows Application Event Log or MS SQL Server ERRORLOG while performing any operation on MDF (Master Database File) of SQL Server:
"2010-03-06 22:41:19.55 spid58 Error: 823, Severity: 24, State: 2...
