procedure proc(p_id_tank NUMBER, p_name_tank VARCHAR2)
as
begin
    insert into tank (id_tank, tank_name) values (proc.p_id_tank, proc.p_name_tank);
end proc;
select fun1(1) from dual;
/

SQL> SELECT banner_full FROM V$VERSION;

BANNER_FULL                                                                                                                                                     
----------------------------------------------------------------------------------------------------------------------------------------------------------------
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.4.0.0.0


SQL> COLUMN keyword FORMAT A20;
SQL> COLUMN RESERVED FORMAT A9;
SQL> COLUMN RES_TYPE FORMAT A9;
SQL> COLUMN RES_ATTR FORMAT A9;
SQL> COLUMN RES_SEMI FORMAT A9;
SQL> COLUMN DUPLICATE FORMAT A9;

SQL> select KEYWORD -- VARCHAR2(128) Name of the keyword
  2       , LENGTH -- NUMBER Length of the keyword
  3       , RESERVED -- VARCHAR2(1) Indicates whether the keyword 
  4                  -- cannot be used as an identifier (Y) or 
  5                  -- whether the keyword is not reserved (N)
  6       , RES_TYPE -- VARCHAR2(1) Indicates whether the keyword 
  7                  -- cannot be used as a type name (Y) or 
  8                  -- whether the keyword is not reserved (N)
  9       , RES_ATTR -- VARCHAR2(1) Indicates whether the keyword 
 10                  -- cannot be used as an attribute name (Y) or 
 11                  -- whether the keyword is not reserved (N)
 12       , RES_SEMI -- VARCHAR2(1) Indicates whether the keyword 
 13                  -- is not allowed as an identifier 
 14                  -- in certain situations, such as in DML (Y) or 
 15                  -- whether the keyword is not reserved (N)
 16       , DUPLICATE -- VARCHAR2(1) Indicates whether the keyword 
 17                  -- is a duplicate of another keyword (Y) or 
 18                  -- whether the keyword is not a duplicate (N)
 19  from SYS.V_$RESERVED_WORDS A where KEYWORD like 'CONST';

KEYWORD                  LENGTH RESERVED  RES_TYPE  RES_ATTR  RES_SEMI  DUPLICATE
-------------------- ---------- --------- --------- --------- --------- ---------
CONST                         5 N         N         N         N         N        

SQL> CREATE TABLE CONST(
  2     PURGE VARCHAR2(1)
  3   , LINK NUMBER
  4   , DATA DATE);

Table CONST created.