USER_TSTZ_TAB_COLS displays information about the columns of the tables owned by the current user, which have columns defined on TIMESTAMP WITH TIME ZONE data types or object types containing attributes of TIMESTAMP WITH TIME ZONE data types. Its columns (except for OWNER, COLUMN_NAME, NESTED, and VIRTUAL_COLUMN) are the same as those in ALL_TSTZ_TAB_COLS.
See Also:
"ALL_TSTZ_TAB_COLS"