Oracle® Database 11g / 12c / 18c error codes ORA-00208: number of control file names exceeds limit of [string]

ORA-00208: number of control file names exceeds limit of [string]

Oracle Error Code: ORA-00208

Cause: An attempt was made to use more control files than Oracle supports.

Action: Shut down Oracle. Reduce the number of control files specified in the CONTROL_FILES parameter in the initialization parameter file, and restart Oracle. Delete usused files.