The External Compatibility Package (excompat) is an implementation
of some PL/SQL system packages.
The naming convention is <package_name>_<routine name>
e.g. utl_file.fopen() is utl_file_fopen().

The following routines are avialable:

UTL_FILE package

function utl_file_fopen
procedure utl_file_fclose
procedure utl_file_get_line
procedure utl_file_put
procedure utl_file_new_line
procedure utl_file_put_line
procedure utl_file_putf
procedure utl_file_fflush
procedure utl_file_fclose_all

DBMS_OUTPUT package

procedure dbms_output_enable
procedure dbms_output_disable
procedure dbms_output_put
procedure dbms_output_put_line
procedure dbms_output_new_line
procedure dbms_output_get_line
procedure dbms_output_get_lines

DBMS_LOB package

procedure dbms_lob_append
procedure dbms_lob_append
function dbms_lob_getlength
function dbms_lob_getlength
function dbms_lob_compare
procedure dbms_lob_copy
procedure dbms_lob_copy
procedure dbms_lob_erase
procedure dbms_lob_erase
function dbms_lob_substr
function dbms_lob_instr
procedure dbms_lob_read
procedure dbms_lob_trim
procedure dbms_lob_trim
procedure dbms_lob_write
function dbms_lob_new_clob
procedure dbms_lob_append
function dbms_lob_compare

DBMS_ALERT

procedure dbms_alert_register
function dbms_alert_get_event_id
procedure dbms_alert_remove
procedure dbms_alert_removeall
procedure dbms_alert_set_defaults
function dbms_alert_get_defaults
procedure dbms_alert_signal
procedure dbms_alert_waitone
procedure dbms_alert_waitany
procedure dbms_alert_wait