Summary: Stellar Repair for MS SQL is the best alternative to 'DBCC CHECKDB REPAIR_ALLOW_DATA_LOSS' command. The software helps repair SQL database (MDF) files when the DBCC CHECKDB command fails. It can repair corrupt MDF and NDF files of SQL 2019 and lower versions without data loss. You can download the demo version of this SQL database repair software to scan and preview repairable data.
DBCC CHECKDB is executed on the SQL Server database to check the physical and logical integrity of the database’s integral components. These objects include tables, indexes, keys, stored procedures, triggers, etc. DBCC CHECKDB also checks the structure of all the database tables and indexes. In case any of these checks fail while executing DBCC, you will get an error message that looks similar to the following:
CHECKDB found 0 allocation errors and 15 consistency errors in database ‘dbname’.
repair_allow_data_loss is the minimum repair level for the errors found by DBCC CHECKDB (dbname).
The checks performed by SQL Server DBCC CHECKDB may fail due to issues like file system corruption, driver issues, hardware malfunctioning, problems with the SQL Server engine, and corrupt or damaged pages in memory. See common SQL database corruption errors and their solutions.
What Does DBCC CHECKDB ‘REPAIR_ALLOW_DATA_LOSS’ Fix and What Are The Challenges Associated With It?
Syntax of DBCC CHECKDB with repair options is as follows:
Running DBCC CHECKDB with REPAIR_ALLOW_DATA_LOSS option tries to repair all the database consistency errors. However, the database objects’ integrity is not promised as some data may be compromised or found missing once the command is executed. There are some warning messages associated with REPAIR_ALLOW_DATA_LOSS. These warnings include:
Read this: EMERGENCY-mode repair: the very, very last resort by Paul Randal
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When a database is put into an Emergency state and SQL Server DBCC CHECKDB with REPAIR_ALLOW_DATA_LOSS is executed, the following actions will take place:
If DBCC CHECKDB REPAIR_ALLOW_DATA_LOSS does not work or causes data loss, using Stellar Repair for MS SQL software can come in handy. The software can handle all SQL database corruption issues due to server crashes, virus attacks, sudden system shutdown, hardware failure, operating system malfunction, etc.
One major benefit that the SQL repair tool offers is that it preserves the integrity of MDF and NDF files while repairing the SQL database, making it a potential alternative to DBCC CHECKDB’ REPAIR_ALLOW _ DATA_LOSS’ option.
The software repairs MDF/NDF files while keeping the data intact. Other benefits that the software offers while repairing database are as follows:
In the event of failure, both MDF and NDF files are affected. To efficiently repair SQL Database, it’s important to repair all the components of the master database file and secondary database files.
If any SQL Server disruption occurs, the repair process is paused and automatically resumed when connection to a server is re-established. This helps run the repair process smoothly, ensuring no data is lost during the process.
To repair the database using the software, follow these steps:
When DBCC CHECKDB reports database consistency errors, you can try restoring the database from an updated backup. If backup is not available or corrupted, the last resort is to run CHECKDB with ‘REPAIR_ALLOW_DATA_LOSS’ option. However, the Repair option can result in data loss and may prevent you from restoring the database to a consistent state. Using Stellar Repair for MS SQL is a better alternative to repair corrupt SQL database without any risk of data loss.
Problem solver and Data recovery specialist. Usually share informative articles on data recovery, database corruption and ways to recover lost data.
Why is DBCC doing nothing?
If your database posses severely damage, then DBCC can fail to complete the desired task.
In my case, I tried stellar’s tool to ensure 100% data availability.Our organization always gives priority to data safety.
We also respect laws of data safety & privacy.
I tried all things mentioned above. My findings are as follows:
1. Free tips are not providing 100% assurance
2. Third party tool works efficiently but limited to paid subscribers
Hi Izaiah,
Your personal feedback would be helpful for other SQL server administrators.
Stellar Repair for MS SQL is the best alternative. I read reviews of MVPs about this tool.
Most of the users do not choose the repair allow data loss because a user may loss his data after using this command. Stellar phoenix SQL database repair is a good alternative to fix corruption from MDF file. Thanks a lot for providing such a fantastic software.
Many blogs are present over the internet regarding this problem and my searching ended in this blog post. I downloaded SQL repair tool and repaired my corrupt MDF file.
I know, no other user is using the DB. Is it necessary to change the database in single user mode to run DBCC CHECKDB repair command?
Hi Samuel,
Yes, there is a need to run this command in SINGLE USER Mode because this command internally allocates/deallocate references to the pages and move them.
If you have any query regarding the post then, please let me know.
Thank you, keep reading!
Jyoti,
I agree with you. DBCC CHECKDB repair allow data loss is highly supported option but the result is data loss.
I read about Stellar Repair for MS SQL tool and please tell me, is it necessary to install the SQL Server on the machine to repair the corrupt file?
Hi Jaxon,
It is not necessary to install the SQL Server on the machine to repair the file. You can simply download the tool and repair MDF and NDF files.