STANDBY_PRESERVES_NAMES

Parameter type	Boolean
Default value	false
Parameter class	Dynamic: ALTER SYSTEM
Range of values	true | false

STANDBY_PRESERVES_NAMES indicates whether or not the file names on the standby database are the same as those on the primary database.

When STANDBY_PRESERVES_NAMES is set to true the standby database, the file-add redo causes an empty file of the same name to be created on the standby system. Operations that add, drop, or rename files on the standby database are disallowed.

If the standby database is on the same system as the primary database, and you specify true, be careful not to overwrite the primary database files.