Sunday, December 27, 2009

Resolving “Page errors on the GAM...” Error Message

The metadata structure of Microsoft SQL database is divided into numerous allocation units, such as, IAM (Index Allocation Map) pages, GAM (Global Allocation Map) pages, SGAM (Shared Global Allocation Map), or PFS (Page Free Space) pages. Corruption in any of the above pages primarily results into unmountability of database, further resulting into inaccessibility of database records. In addition, you receive an error message that states the exact cause of corruption. Few main reasons for metadata structure corruption could be unexpected system shutdown, SQL Server damage, virus hit, and human errors. To resolve all corruption scenarios and to access the database records, you will need to use restore the data from an updated backup. But there are millions of case studies proving that most of the database users forget to create a database backup. In such situations, these users need to use advanced SQL Recovery application.

As a practical case, you receive the underneath error message when you attempt to mount your MS Access database:

“Page errors on the GAM, SGAM, or PFS pages do not allow CHECKALLOC to verify database ID DB_ID pages from P_ID1 to P_ID2. See other errors for cause.”

The same error message appears repeatedly each time you attempt to mount your database. The above error message is a severity level 16 error message and can be caused either through logical or physical damage.

Cause:

The root cause for the occurrence of the above error message is corruption in GAM, SGAM, or PFS pages.

Resolution:

The error message can be resolved by using any of the below methods:
If caused due to physical damage, change the damaged system component with a brand new system component.
In case of logical damage, run DBCC CHECKDB command, with correct repair clause.
If both the above resolutions fail, restore the data from an updated backup.
However, if case of absence of a valid backup, repair the corrupt database using advanced SQL Database Repair utility. Such SQL Database Recovery utilities are competent enough to repair corrupt databases in all logical corruption scenarios. Database repair through these tools can even be performed by a non-technical user.

SQL Recovery is an efficient SQL Repair tool to surpass all SQL database corruption scenarios. The software incorporates advanced scanning methods to repair database created in SQL Server 2008, 2005, and 2000. It is designed for Windows 7, Vista, XP, 2003, 2000 and NT.

Wednesday, December 23, 2009

Table Corruption Post Meta data Structure Damage

Tables in MS SQL Server database act as a major storage component to save records with different data types. The data stored in the tables can be easily viewed by running a query. However, in some situations (when you receive an error message), the query may not display the desired records. One of the main reasons for the occurrence of the error message is corruption of table. The error message message halts the extraction of records, making them totally inaccessible. To access the records stored in the table, an easy way is to restore them from an updated backup. However, if the backup is not available, then you will need to repair the corrupt table. To do so, you will need to search for an advanced SQL Recovery application.

Picture a situation, where you receive the below error message when you attempt to access the records stored in a MS SQL Server database table:

“Table error: Object ID O_ID, index ID I_ID. Index node page P_ID1, slot S_ID1 refers to child page P_ID2 and previous child P_ID3, but they were not encountered.”

After the above error message appears, all the table records become inaccessible. Furthermore, the error message appears at every attempt of accessing the table records.

Cause:

The above error message pops up when the table gets corrupted due to metadata structure damage. The result of damage is that the index page in a B-tree can not see its child references, which are neighboring to its two lower pages.

Note: Database corruption can either be caused due to logical or physical factors.

Resolution:

For systematic resolution of the above error message and repair of corrupt table, you will need to follow underneath measures:
Physical damages can be surmounted only by changing the damaged system object with a new object.
Logical corruption can be surpassed by running DBCC CHECKDB command.
In case the problem persists even after running DBCC CHECKDB command, then you will need to repair your database table using an advanced SQL Database Repair software.

A SQL Database Recovery utility ensures comprehensive repair of corrupt database components by incorporating powerful scanning methods. In addition, these tools perform safe repair, without making any changes in original records saved in table.

Monday, December 21, 2009

How to Resolve “Database ID DB_ID, object 'OBJNAME' (ID O_ID)...”

The main purpose of DBCC CHECKDB command in MS SQL is to check the integrity (logical and physical) of all the specified database objects. The command performs three operations (DBCC CHECKALLOC, DBCC CHECKTABLE, and DBCC CHECKCATALOG) to comprehensively repair the corrupted database. While the repair command repairs your database in most situations, it might fail to repair in case of damage of critical system tables. In such circumstances, an easy way is to restore the data from an updated database backup. But in case of absence of an updated backup or the backup file itself getting corrupted, then you will need to search for advanced SQL Database Recovery application that can repair your database.

Consider a practical situation, where you receive the below error message when you attempt to mount your database:

“Database ID DB_ID, object 'OBJNAME' (ID O_ID). Loop in data chain detected at P_ID.”

After the above error message pops up, your database becomes unmountable. Furthermore, the data stored in your database becomes inaccessible.

Cause:

The root cause for the occurrence of the above error message is corruption in metadata structure of SQL database. Corruption can occur by both logical or physical reasons.

Resolution:

To resolve the above error message and to access the database records, follow the below three measures:

Swap the physically damaged system component with a new component.
Execute DBCC CHECKDB command (with appropriate repair clause.)
Restore the data from an updated database backup.

Out of the above three measures, the first measure provides complete resolution from the physical damage situations. The other two measures fail to perform in case the database is severely corrupted or there is no backup available. In such situations, the only alternative left is advanced SQL Repair software.

Such SQL Recovery tools ensure complete repair of most corrupted SQL databases. These applications come with interactive user documentation that makes the database user to easily understand the repair process. These repair tools are non destructive in nature.

Saturday, December 19, 2009

Tips to resolve “Table error: Object O_ID... page P_ID was not encountered.” Error

The records in Microsoft SQL Server database can be placed and located in the form of a B-tree. These records are divided into various pages (child pages), each having a unique index page, which is one level up in hierarchy from the child page. Corruption in the hierarchical tree structure (metadata structure corruption) primarily results in loosing the reference of the child page from the Index page. In such situations, the data stored in the database becomes inaccessible. For accessing the data stored in the database, an ideal way is to restore it from an updated database backup. But if in case of absence of an valid database backup, you will need to use advanced MS SQL Database Recovery application to repair your database.

Consider a practical scenario, where you receive the below error message when you attempt to access the records stored in table:

“Table error: Object ID O_ID, index ID I_ID. Parent node for page P_ID was not encountered.”

The above error message makes the data stored in table inaccessible. Moreover, the error message repeatedly repeats every time you attempt to access the records stored in the table.

Cause:

The root cause for the occurrence of the above error message is SQL database corruption due to metadata structure damage.

Note: SQL database can be corrupted either due to logical or physical factors.

Resolution:

To resolve the above error message and to access the table records, you will need to follow the below measures:
To solve all the corruption issues caused due to physical damage, swap the corrupt system component with a new component.
To solve all the corruption issues caused due to logical damage, run DBCC CHECKDB command with correct repair clause.

The first measure is competent enough to resolve all the physical damage issues. The second measure, however, fails to resolve all logical corruption problems. For such situations, the database table can be repaired by using advanced MS SQL Recovery software. These SQL Repair utilities employ effective scanning methods to completely repair the corrupt table after all logical database corruption scenarios.

Thursday, December 17, 2009

Resolving “Missing or invalid key in index...” Error Message

In SQL Server database, the data is primarily organized in two kinds of non-system pages – data pages (consist of data rows) and Index pages (consist of index rows). For every data row in a data page, there is always a pre-defined matching index row in Index page. However, if the index row is missing or corrupt, then you receive an error message that results into unmountability of your database. Records stored in an unmountable database are inaccessible. To access the records and continue with your work, you will need to use the data from an updated database backup. But if in case, the database backup has been corrupted or damaged, then you will need to use powerful third-party SQL Database Recovery application that can repair the database.

Consider a practical situation, where the below error message appears when you attempt to access the records stored in SQL database table:

“Table error: Table 'OBJNAME' (ID O_ID). Missing or invalid key in index 'INDEXNAME' (ID I_ID) for the row”

The above error message makes the records stored in your table inaccessible. Furthermore, the above error message pops up every time you attempt to access the table records.

Cause:

The fundamental cause for the occurrence of the above error message is missing of Index row.

Note: The above error message can be caused due to logical or physical corruption in SQL database table.

Resolution:

There are different ways to resolve corruption caused due to different reasons. These ways are discussed underneath:
Resolve the physical damage issues by swapping the damaged system component.
Resolve the logical damage problems by running DBCC CHECKDB command, with appropriate repair clause.

While the first resolution guarantees complete resolution from all physical damage scenarios, the second fails to repair database table in all logical corruption situations. For complete repair of tables after all logical corruption cases, you will need to opt for efficient SQL Recovery software. Such SQL Repair tools use powerful scanning methods to repair and restore the repaired table on default or user-specified location.

Wednesday, December 16, 2009

Resolving “Row error: Object ID....created NOT NULL, but is NULL in the row ”

SQL Server database corruption can have severe effects on the records stored in database components. One of the effect that most database users might encounter is wrong values being displayed under a particular column. Few major causes for database corruption can be improper system shutdown, SQL Server malfunction, virus infection, and more. An easy way to access data after corruption due to any of the above reasons is to restore the data from an updated backup. However, there might be circumstances where you have either not created any backup or backup itself is damaged corrupted. In such situations, you will need to search for advanced MS SQL Repair application that can systematically repair your corrupted database.

For example, the below error message pops up each time you attempt to mount your SQL Server database:

“Row error: Object ID O_ID, index ID I_ID, page ID P_ID, row ID S_ID. Column 'COLUMN' was created NOT NULL, but is NULL in the row.”

As the error message states, the columns which had NOT NULL values, now hold NULL values. The above error is 'severity level 16' message and can occur either due to software or hardware corruption issues.

Resolution:

The above error message can be resolved by following underneath error messages:

To isolate the problem caused due to physical damage of the system component, you will need to swap out the damaged system components with new components.
To completely resolve the issues created due to logical damage, you will need to execute DBCC CHECKDB command with appropriate repair clause.
Restore the database by using an updated database backup.

While the above resolutions are helpful in most of the issues, they fail in below situations:

DBCC fails to repair
Unavailability of database backup

To overcome both the above database corruption issues, you will need to use effective SQL Database Recovery software. Such SQL Repair tools thoroughly scan your database and allow you to restore the repaired database at user-specified location. These tools can be easily understood even by novice user.

Monday, December 14, 2009

Resolving “IAM page P_ID ... that should be in filegroupFG_ID2” Error Message

Mapping of MS SQL Server database is performed over a group of operating system files. The information related to data and logs is kept in different files, while single files are handled only by one database. The collections of all these files is known as filegroup. Two major functions that every filegroup performs are placement of data and administrative tasks. Corruption in any of the filegroups primarily results in unmountability of your database, which further results in inaccessibility of database records. To access your records after your SQL Server database becomes unmountable, a simple way is to restore the data from an updated database backup. But in weird situations where you have not created any backup or backup falls short to restore the records, you will need to start searching for an advanced third-party MS SQL Repair application.

Picture a scenario where you attempt to access the data saved in one of your SQL Server database, an you receive below error message:

“IAM page P_ID for object ID O_ID, index ID I_ID controls pages in filegroup FG_ID1, that should be in filegroupFG_ID2.”

Database records stored in your database do not appear because the above error message does not allow the database to mount. In addition, you repeatedly receive the above error message each time you attempt to access the database records.

Cause:

The root cause for occurrence of the above error message is damage of filegroup. Corruption can occur either due to logical or physical reasons.

Resolution:

Below are two measures that allow you to access database records:

Swap the physically damage component with a new component to overcome all physical damage issues.
Run DBCC CHECKDB command to surmount all logical issues.

Although the above resolutions prove successful in most cases, the possibility overcoming all logical corruption scenarios by using DBCC CHECKDB command is slightly less. In such situations, a powerful SQL Database Recovery application enables you to repair your corrupt database and access it records. Such SQL Repair tools use advance repairing procedures to thoroughly scan and repair the corrupt database.

Tips to Resolve “Database 'DBNAME' consistency errors...” Error Message

DBCC CHECKDB command is used to check the physical and logical integrity of MS SQL database objects. It is a three-stage process that performs DBCC CHECKALLOC, DBCC CHECKTABLE and DBCC CHECKCATALOG operations on the specified database. The command also validates the service broker data, contents of every indexed view, and link-level between file system directories and table metadata. While DBCC CHECKDB command repairs your SQL Server database in most situations, it might fail to perform under numerous circumstances. In such cases, an ideal way to is to restore the data from an updated database backup. But if in case, there is no database backup available or backup falls short to restore the lost data, then you will need to use advanced MS SQL Repair software.

As a practical scenario, you encounter the below error message while attempting to mount your Employee database:

“Database 'Employee' consistency errors in sysobjects, sysindexes, syscolumns, or systypes prevent further CHECKNAME processing.”

Above error message makes the data stored in the database inaccessible.

Grounds for the Error:

Corruption of Employee database either due logical or physical reasons.

Resolution:

To access the Employee database records and comprehensively resolve database corruption, you will need to follow the below measures:

To surmount damages caused due to physical damage of the system component, you will need to switch to a new system component. This can also include reinstalling the operating system.
To overcome the damages caused due to logical corruption, you will need to run DBCC CHECKDB command.

While DBCC CHECKDB command provides complete repair in most situations, it fails to perform when it finds error in Stage 2 (while running DBCC CHECKTABLE). This means that your system tables have been corrupted and DBCC CHECKDB can not repair your database. In such situations, the only way to repair your database is by using advanced SQL Database Recovery software.

Tuesday, December 8, 2009

Resolving “Text node referenced by more than one node” Error Message

Data, such as, tables, views, etc in SQL Server database is stored in blocks of 8Kb known as Pages. The two ways in which these Pages can be organized are clustered and non-clustered tables. While in clustered table the pages are linked in a doubly-linked list, the pages in non-clustered table may not be linked. Corruption in clustered table can damage the linking of the pages, further resulting in the unmountability of the SQL database. The records stored in the pages become inaccessible once the SQL Server becomes unmountable. For comprehensive accessing of all records in such situations, you will need to restore the data from an updated database backup. But if in case, the backup is corrupt, unavailable, or not even created, then you will need to use advanced third-party SQL Recovery application.

As a practical instance, you encounter the below error message while trying to access the records saved in a particular table:

“Text node referenced by more than one node. Object ID O_ID, text, ntext, or image node page P_ID1, slot S_ID1, text IdTEXT_ID is pointed to by page P_ID2, slot S_ID2 and by page P_ID3, slot P_ID3.”

Your database becomes unmountable after the above error message appears. Additionally, the error message pops up every time you attempt to access the table records.

Cause:

The reason responsible for the above error message is internal errors related to three pages involved in the above error message. These internal errors could be caused either due to physical or logical crash scenarios.

Resolution:

Below steps enable you to resolve the problem and access your database records:

Check for physical damage of the system component. If required, change the damaged system component
If the problem persists, run DBCC CHECKDB using appropriate repair clause to repair your database.
However, if the error message still appears and no backup is available, then you will need to use powerful SQL Database Repair tool. These MS SQL Repair applications use intensive scanning methods to and repair databases and recover all database components. Such tools are completely non-destructive in nature.

Monday, December 7, 2009

How to Resolve “CHECKTABLE processing of object ID...” Error Message

DBCC CHECKTABLE command in SQL Server database is used to check your database table for errors. The command creates a mini dump file in the SQL Server Log Directory whenever it detects that the table is corrupt or damaged. If you wish to access the records saved in the table in such scenarios, then you will need to restore the data from an updated backup. However, if in case the backup is not available or backup falls short to restore the table records, then you will need to search for advanced SQL Server Recovery application.

As a practical case, you view the below error message in mini dump file after you run DBCC CHECKTABLE command to check your table:

“CHECKTABLE processing of object ID O_ID, index ID I_ID encountered page P_ID, slot S_ID twice. Possible internal error or allocation fault.”

Your table records become inaccessible after the above error message appears.

Cause:

The root cause for the above error message is encountering of Page P_ID during the course of scanning.

Note: Table corruption can occur either due to logical or physical damage.

Resolution:

To resolve the above error message and to access table records, you will need to follow the below steps:

Restore the data from an complete backup.
In case of physical damage, change the damaged system component.
For logical corruption scenarios, run DBCC CHECKDB using appropriate repair clause.

Swapping the damaged system component provides complete resolution from all physical damage scenarios. The other two resolution fail to perform under tow scenarios:

The backup is unavailable.
Severe Corruption of the database.

To repair your corrupted database in the above scenarios, you will need to search for an efficient SQL Database Repair tool. These MS SQL Repair applications are developed by talented data recovery experts and repair databases after almost all logically corrupted SQL databases. These repair tools use high-end scanning methods to repair and restore the recovered database components on default or user-defined destination. These read only nature of these database repair applications ensure risk-free repair of database, leaving the original database file untouched and unmodified.

Saturday, December 5, 2009

Resolving “Forward row mismatch” Error message

In SQL Server database, rows of a table are divided and stored into a series of partitions. These rows can either be saved in heap or B-tree structure. In heap tree structure, the table does not contain any Index and the forward row always points back to the forwarding row. However, in B-tree structure the rows are saved in accordance to the Index values. Corruption in metadata structure of your SQL database results in changing the values of these rows, thereby resulting in inaccessibility of all database records. An easy way to surpass such corruption scenarios is by using restoring the data from an updated backup. But, the possibility of backup being corrupted or damaged always exist. In such situations, an ideal way is to repair your database by using an effective SQL Server Recovery software.

Consider a scenario, where the underneath error message pops up every time you attempt to mount your database:

“Forwarded row mismatch: Object ID O_ID, page P_ID1, slot S_ID1 points to forwarded row page P_ID2, slot S_ID2; the forwarded row points back to page P_ID3, slot S_ID3.”

Your database records become inaccessible after the above error message appears.

Cause:

The main reason of the above error message is that the forwarded row (S_ID2 on page P_ID2) instead of pointing to forwarding row (S_ID1 on page P_ID1), is pointing to the wrong row.

Note: The above case can occur due to both logical and physical corruption scenarios.

Resolution:

The resolution for the above error message is mentioned below:

Swap the system component that is damaged with a new component.
Execute DBCC CHECKDB command.

While the former resolution to overcome hardware related issues is perfect, the later solution might fail to resolve logical corruption issues. For complete and systematic resolution in all logical corruption scenarios, you will need to opt for advanced SQL Database Repair tool. Such tools provide maximum MS SQL Repair by employing high end scanning and repairing algorithms. These tools are non-destructive and perform recovery without making any changes in the original database file.

Thursday, December 3, 2009

Database Suspect due to Problems while Transaction Commit

A commit transaction in SQL Server is primarily used to make all the changes permanent which you performed since the start of transaction. Once you run the commit statement, all the resources held by the transaction are freed and the value for TRANCOUNT is set to “0”. Interruption while processing of commit transaction can result into making your database suspect. In such situations, your database becomes unmountable and the records stored in it become inaccessible. For complete access of database records after it has been corrupted, you will need to restore the data from an updated database backup. However, if the database backup is corrupted or unavailable, then you will need to use advanced third-party SQL Recovery application that can systematically repair your corrupted database.

A commit transaction can be halted due to below reasons:

A SQL Server CE application closes unexpectedly.
Windows CE device is reset.
SQL Server CE does not respond.

Your database is marked suspect after any of the above problem occurs. Furthermore, this leaves your database in an unrecoverable state. The above problems occur either due to power failure or an explicit reset during a transaction. Below are some prevention measures that enable you to minimize the effect of the problem:

Ensure that you have maintained a backup copy of your SQL Server CE database files.
To prevent database users from performing an explicit reset while a data manipulation process is in progress, add a progress bar in your application.
Always try to keep your transactions short.


Resolution:

To make your database records accessible, you will need to use Compact method. While the method repairs the database in many cases, chances of database corruption still exists. In such situations, the only way left to repair your database is by using advanced SQL Database Repair application.

These database repair utilities employ intensive scanning methods to repair your corrupted database and recover almost all database components. With highly-interactive user documentation, the MS SQL Repair software guides you through a complete repair process. The non-destructive software provides safe recovery of database components and provides an option to save them on default or new destination.