MS SQL Server Error 9100 – ‘Possible Index Corruption Detected’!
Managing data in an efficient way is one the most complicated task for the users as well as organizations. This problem is resolved with the help of a good database management system. For many organizations, Microsoft SQL Server is the first choice when it comes to build or manage a strong relational database. It is said that everything is not perfect, similarly, while working with SQL Server, users face multiple issues. Moreover, these issues also interrupt the user’s workflow. One of the most common technical glitches that occur in the SQL database is ‘SQL Server Error 9100’.
Now, it becomes important to fix the error as soon as possible. If the error is not resolved immediately, it can also lead to data loss issues. Therefore, in this blog, we are going to discuss multiple ways to resolve SQL Error 9100.
Table of Content
Why SQL Server Warning Fatal Error 9100 Occurred?
Before resolving the error 9100 SQL Server, it is necessary to know the main cause of the error. This will help the user to prevent the occurrence of the glitch in the future. The major cause of SQL error 9100 is the corrupt file of SQL database index. Additionally, the SQL 9100 error message occurs with the security level 23 state 2 and is mainly associated with SQL Server 2005, 2008 (R2), and 2012. The error message appears such as:
Msg 9100, Level 23, State 1, Line 1 Possible index corruption detected. Run DBCC CHECKDB.
Also Read: How to Fix Index Corruption in SQL Server Database
Let us Resolve SQL Server Error 9100 via Some DIY Methods
The user can fix SQL Server Warning Fatal Error 9100 by implementing some manual solutions. In the next section, we are going to discuss different methods to fix 9100 SQL error.
Method 1: DBCC Execution
When SQL server error 9100 occurred, it can be seen that it recommends the user to run DBCC CHECKDB. In this method, database console commands are executed. These commands check the physical and logical inconsistencies within the database objects. Moreover, it tests and verifies following parameters in the database tables:
- Rational amount of data on each table
- Consistency among pointers
- The volume of page offsets is appropriate
- The indexes are properly sorted
- Indexes and data pages are linked correctly
The DBCC CHECKDB commands include three subcommands to rectify SQL server warning fatal error 9100:
- DBCC CHECKALLOC: This command performs the consistency check over the space allocation structure of database on disk.
- DBCC CHECKCATALOG: It performs consistency check in the system table of the specified database. This command ensures that:
—> Each data type is assigned with a matching entry in syscolumns and systypes.
—> In sysobjects, each view and table has a minimum of one column in syscolums.
- DBCC CHECKTABLE: To check integrity among text, images, data, index and next pages for the DB table this DBCC CHECKTABLE command is used. It basically performs consistency check over indexed views and tables.
Note: There is no need to run each command separately for correcting Microsoft SQL Server error 9100. All of the above-mentioned commands are executed automatically when DBCC CHECKDB is implemented.
Permissions For Running DBCC CHECKDB Command:
For implementing DBCC CHECKDB command on specific SQL database table, certain permissions and authorities are required. The user must be a member of:
- ‘sysadmin fixed server role’ or ‘db_owner fixed database role’
Method 2: Restore From Backup
If SQL error 9100 is still not resolved by applying the method 1, the user can switch to method 2. In this method, backup restoration is performed to rectify occurred SQL server warning fatal error 9100. When the database is restored from the recent backup files, only the current data is not recovered and the rest of the data is retrieved easily.
For Creating Backup, some points should be taken care of:
- It is recommended to take backup of SQL database on regular basis to avoid SQL Server error 9100.
- The backup of data does not require any extra resources as it is application oriented.
- It is best to store the backup of data at some off-site location with minimum access.
Limitations Associated with Manual Workarounds
While resolving SQL error 9100, there are some drawbacks linked to the manual methods:
- The user must have technical knowledge related to SQL Server to execute the commands correctly.
- If any of the commands is performed incorrectly then, the user may may face data loss issue.
- Additionally, the user cannot use Method 2 in the absence of the backup file.
Get Instant and Reliable Way to Fix SQL Server Error 9100
Yes, the user can troubleshoot SQL 9100 error using an automated and trustworthy software that is SysTools SQL Recovery Tool. With this software, the user can repair the files that are damaged and then export them into healthy SQL database. The utility is capable to fix both MDF and NDF files associated with SQL Server database. Moreover, the utility is having a user-friendly interface which makes easy for both technical and non-technical users to work with it. This is the best solution in case DBCC CHECKDB Job Fails by user.
Finally, Fatal Error 9100 SQL Database Resolved!
When there is error 9100 is encountered. It is important to fix the error immediately otherwise the user may have to data loss issue. In the above section, we explained various methods to resolve SQL database 9100 error. However, it always recommended opting for a reliable and automated solution.
Frequently Asked Questions
Ans: In such a situation, you can restore data from the backup file.
Ans: If you have damaged backup file (.bak), you cannot restore it to the SQL database. You need to fix it first and then restore it. You can use the automated tool to rectify the damaged backups because there is no built-in option for this.