Fix cPanel MySQL Database Mapping Issue (DBCACHE exit 255)

I am looking for an experienced Linux / cPanel & WHM administrator to troubleshoot and fix a database mapping issue on my self-managed VPS server.

Server Details:

VPS server (root access available)

cPanel & WHM version: 11.134

MariaDB running normally

Websites are working and databases are functional

Problem:

In cPanel → Manage My Databases it shows:
"The database server is currently offline (adminbin Cpanel/cpmysql/DBCACHE: exit 255)"

phpMyAdmin was also inaccessible earlier.

Databases and MySQL users exist and websites connect successfully.

After rebuilding DB mapping some databases appear but:

Database privileged users are not showing in cPanel UI.

cPanel database mapping seems broken.

Troubleshooting Already Done:

Verified MariaDB service is running.

Tested database connectivity via MySQL CLI.

Ran update_db_cache and rebuild_dbmap scripts.

Attempted dbmaptool mapping.

Restarted MySQL and cPanel services.

Ran cPanel update/repair commands.

Checked /var/cpanel/databases mapping files.

Current Situation:

Websites are live and working.

Databases exist in MySQL.

cPanel UI does not properly display database users and privileges.

Need proper repair of cPanel MySQL mapping / DBCACHE issue.

What I Need:

Diagnose the root cause of the cPanel MySQL mapping issue.

Restore proper database-user mapping in cPanel.

Ensure phpMyAdmin and Manage My Databases work normally.

Verify that databases, users, and privileges are correctly synchronized.

Requirements:

Strong experience with cPanel/WHM server administration

Linux system administration

MySQL / MariaDB troubleshooting

Experience fixing cPanel database mapping issues

Access Provided:

SSH root access

WHM access

Budget:
Hourly contract.
Expected rate: $10 – $25 per hour depending on experience.

Please only apply if you have experience fixing cPanel database mapping or DBCACHE related issues.