How to Fix SQL Error 15023?

Summary: Typically, users encounter errors when they deal with user mappings after restoring a SQL database from one to another. One of them is the SQL Server Error 15023, which causes trouble during mapping and assigning permissions. Thus, to resolve this error and correctly perform a secure data restoration, read this blog post. It defines ways and a SQL Database Recovery Tool that helps you to access data conveniently at all times. Download Now Purchase Now

Identifying Error Code 15023 in SQL

Everyone is well aware of the fact that backup and restore are the fundamentals of a SQL database. It is essential to have them to avoid any major data loss in unforeseen situations or at any other time. However, when users try to restore a database on a different, new server, user mapping doesn’t function well. A user goes through the following stages:

Security → Logins → right click some user → Properties → User Mapping → Choose DB → set as db_owner → hit OK.

This results in the user, group, or role ‘xyz’ already exists in the user database. Thus, error 15023. There can be several causes for the occurrence of the SQL Server User Mapping Error. These are:

• Mismatched or orphaned SID (Security Identification Number)
• Selective restoration of the user database, excluding the master databases.
• Orphaned user in the database not linked to any server-level login.

Best Ways to Fix SQL Server Error 15023

The error can normally be troubleshooted by the manual procedure using the command queries. However, the free process is always risky, and there may be situations where this can result in loss of data during backup, restoration, or transfer. So, for those scenarios, use the professional tool given down here for ideal results.

Manually Repair SQL Error 15023

Follow the transaction queries (T-SQL) given below in SQL Server Management Studio:

1. Begin by opening a new query analyzer in the SSMS.
2. Then, run the following command to return all existing users in the current database:

USE Yourdb_name GO EXEC sp_change_users_login ‘Report’ GO

3. Next, run another command to fix the orphaned users:

USE Yourdb_name;

4. For newer SQL Server versions, execute this command:

ALTER USER [dbusername] WITH LOGIN = [dbloginname];

5. Finally, you can begin with the user mapping again. Also, test the access permissions to verify that SQL error 15023 is gone.

Note: While you perform these steps, check:

• Existing users are present before you create a new one.
• Login names and user names match with each other.

Drawbacks of the Manual Method

Though you can fix SQL Server error 15023 for free, there are some cons with this process:

• The chances of potential downtime are high, and it is limited to the users at the database level.
• No possibilities to fix roles and permissions mismatches, as well as missing logins.
• Passwords aren’t automatically synchronized and the process isn’t very reliable.

Despite all these, what if you encounter database losses? In such a case, you need a relevant solution for database restoration. This can be achieved easily if you take your database backup beforehand. The steps and method to accomplish it are outlined below.

Professional Way to Fix SQL Server Error 15023

The automated SQL Database Recovery Tool will help you recover data from your SQL database when you encounter this error. So that you don’t lose your data badly in an irrecoverable way. This tool recovers all tables, stored procedures, views, triggers, etc., from MDF and NDF files. Additionally, you can recover data in different modes and save it in a new database or as scripts. Moreover, the software can be run on any OS and supports databases for all SQL versions.

Error Code 15023 in SQL? Take Database Backup

1. Initiate the SQL Recovery Software and continue with Open.
2. Then, include your SQL MDF file in the tool for backup.
3. Choose a mode of recovery as desired, set other options, and hit OK.
4. Further, preview the tables and records present in the selected database to verify.
5. Click Save SQL Data and choose a desired destination option.
6. Enter the rest of the details accordingly, apply the filter, and at last, click OK.

Conclusion

SQL Server Error 15023 is a common trouble when you migrate or restore the database, often caused due to orphaned users. Using the manual steps given above, you can repair the error and get it fixed to start the user mapping again. With this, you can avoid the conflicts, but if the data is hampered, then use the professional tool and take its backup immediately.

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