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.
Sunday, December 27, 2009
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.
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.
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.
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.
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.
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.
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.
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