V$CONTROLFILE displays the names of the control files.

Column Datatype Description
STATUS VARCHAR2(7) INVALID if the name cannot be determined (which should not occur); NULL if the name can be determined
NAME VARCHAR2(513) Name of the control file
IS_RECOVERY_DEST_FILE VARCHAR2(3) Indicates whether the file was created in the fast recovery area (YES) or not (NO)
BLOCK_SIZE NUMBER Control file block size
FILE_SIZE_BLKS NUMBER Control file size (in blocks)