Fix Corruption Due to Table Partition Error in SQL Server

Author | January 13th, 2020 | Consumer Tutorial, SQL Server

Microsoft SQL Server is the most commonly used database management system for storing and retrieving data today. From time to time, new versions are launched with advanced functions for managing data. Table partitioning is one of the amazing features in SQL Server that allows users to divide large tables into several smaller parts. However, users have many problems with SQL Server, and corruption due to a table partition error in SQL Server 2005 is one of them. In this blog, we discuss the reason for this bug and how to fix it.

The SQL Server table partitioning feature is often used to force a sliding window. Adding a large amount of data to the current database table and performing indexing operations on the other table makes the job much easier than loading all the data into a single table. To avoid these problems for users, do partition tables that match the same schema for each field.

The DBCC CHECKTABLE command checks the consistency of these partitioned tables. If a user runs this command and receives errors, the table may be corrupt. To restore complete data, users can use the latest database backup (.bak file).

Let’s Know About Table Partition Error in SQL Server With an Example

Suppose you have two partition tables named “Table X” and “Table Y”, where both tables have the same columns and are partitioned against a similar column. The user created the clustered index for table Y and deleted it. The user then imported the data into table Y using the BULK INSERT command and the TABLOCK option. This can corrupt the data if you run DBCC CHECKTABLE command to ensure the consistency of such table, and you get an error:

Table error 8984: object ID %d, index ID %d, partition ID %I64d. A row should be on partition number %d but was found in partition number %d. Possible extra or invalid keys.

Table Error 8988: Row (%d:%d:%d) identified by (%ls)

Reasons Behind Table Partition Error

If the schema for such tables does not match, a table partition error is displayed. When the user drops Table Y’s clustered index, its metadata gets changed. If you then switch partitions between tables, the metadata information gets mismatched. In this case, the user receives the data corruption errors.

Solution to Fix Corruption Due to Table Partition Error in SQL Server

The user can run the DBCC CHECKTABLE command with the repair option to resolve this data corruption issue. If the problem still persists, then the user should delete the damaged table if he has a last backup of the database. If you have a backup, you can easily restore SQL database from backup. But if you encounter a situation where there is no backup or the backup has been damaged, you can use the SQL Recovery software.

Download SQL Recovery Tool

This is one of the best and recommended tool to repair corrupt MDF file. It helps to recover SQL database files with all components like tables, triggers, views, functions, stored procedures, etc. This tool provides an option to restore data from MDF file directly to the live SQL Database.

What’s More in SQL Database Recovery

Now let us know what features are provided and what bugs are fixed with this software.

  • Repair corrupt MDF and NDF files
  • Recover and preview tables, views, triggers, etc.
  • Restore SQL database files after recovery
  • Repair MDF file of SQL 2019, 2017, 2016, 2014, 2012, etc.
  • Option to preview and restore deleted records from the table
  • Export recovered data directly to the Live SQL or compatible scripts
  • Support ASCII and Unicode XML datatype
  • Works on all versions of Windows OS including Win-10
  • Fix SQL Server Error 5172, 5171, 823, 8946, 926, etc.

Conclusion

In this blog, we discussed all about the SQL Server table partitioning feature and its used. We also learned how to deal with corruption due to table partition error in SQL Server. Here we explained the solution to fix table partition error using the DBCC CHECKTABLE command with the repair option. If in case the user has no backup or backup is corrupted, it is recommended to choose the alternate solution.