oracle 存储过程批量插入大量数据

declare
  numCount number;
  userName varchar2(512);
  email varchar2(512);
  markComment varchar2(512);
  maxId number;
  
begin
  numCount := 1;
  userName := 'userName number : .';
  email := 'email number : ';
  markComment := 'markComment number  .';
 
  for i in 1 .. 1000 loop
    for j in 1 .. 1000 loop 
      
      insert into userInfo (userId,userName,email,markComment) values 
      (numCount,userName||numCount,email||numCount,markComment||numCount);
      
      numCount := numCount + 1;
    end loop;
    commit;
  end loop;
end;
/