oracle error - ORA-00226: operation disallowed while alternate control file open

ORA-00226:	operation disallowed while alternate control file open
Cause:	The attempted operation could not be executed at this time because this process had an alternate control file open for fixed table access.
Action:	Retry the operation after calling cfileUseCurrent.

oracle error - ORA-00225: expected size string of control file differs from actual size string

ORA-00225:	expected size string of control file differs from actual size string
Cause:	The expected size of the control file as stored in its header was different than the actual operating system file size. This usually indicates that the control file was corrupted.
Action:	Restore a good copy of the control file.

ORA-00224:	control file resize attempted with illegal record type (string)
Cause:	An attempt was made to expand or shrink the control file by calling cfileResizeSection using an invalid value for the RECORD_TYPE parameter.
Action:	Use a value for the RECORD_TYPE parameter that specifies a valid record type other than type 0 (valid range is 1-16).