ORA-63376
Cannot add the reserved column for timehouse-enabled table
Cause
An attempt is being made to add the hidden column of a timehouse-enabled table.
Action
Retry specifying a user-defined column of a timehouse-enabled table. The following are the hidden columns in a timehouse table: SYS_STARTIME, SYS_ENDTIME, SYS_STARTSCN, SYS_ENDSCN, SYS_OPERATION and SYS_XID.