Invalid SQL Query with DBMS_JOB.SUBMIT inside

Question

Probably a simple thing, but I can't seem to find the problem in here. I get an error that INVALID SQL STATEMENT. I guess I'm messing something up with the lots of ' chars. If anyone could point out where did I failed I'd be really grateful.
create or replace
trigger TR_REFRESH_SCHEMAS
  after create or alter
  on schema
declare
  tableName         user_tables.table_name%TYPE;
  table_count       number(2);
begin
  select ora_dict_obj_name
  into tableName
  from dual;
  select  count(table_name)
  into    table_count
  from    user_tables
  where   table_name = tableName;
  if (table_count != 0) then
    execute immediate
      'BEGIN'                     ||
        'DBMS_JOB.SUBMIT'         ||
        '('                       ||
          'job        => '        || table_count      || ','        ||
          'what       => '        || 'INSERT_SCHEMA(' ||  tableName || ');,' ||
          'next_date  => '        || sysdate          || ','        ||
          'interval   => '        || null             ||
        ');'                      ||
      'END;'                      ||
      'COMMIT;'
  end if;
  exception
    when no_data_found then
      raise_application_error(-20020, 'Table ' || tableName || ' not found!');
    when others then
      raise_application_error(-20002, 'Error (' || SQLCODE || '): ' || SQLERRM);
end;

Answer 1

I've tried all your recommendations without any success.
For the dbms_output.put_line:
- I've found there was a problem with the interval => null. In the final statement it looked like: DBMS_JOB.SUBMIT(1, INSERT_SCHEMA(TEST), 2012-08-31...., ); obviously wrong. Since the default value of interval is NULL I've taken out that parameter.
For the formatting:
- Thanks for pointing that out! It was surely a problem with that part, as I've seen when printing the statement.
execute immediate
      'BEGIN '                    ||
        'DBMS_JOB.SUBMIT'         ||
        '('                       ||
          'job        => '        || table_count        || ','        ||
          'what       => '        || 'INSERT_SCHEMA(''' ||  tableName || ''');,' ||
          'next_date  => '        || sysdate            ||
        ');'                      ||
      'END;'
    );With the qnotation:
- I get an immediate syntactical error when inserting your code right at the second 'q{' part. On the other hand the first parameter: job is a number type so to_char is meaningless in my opinion.
The result so far for a CREATE TABLE statement:
Error starting at line 1 in command:
create table TESTING
  id varchar2(20) not null,
  text number(8),
  dat blob,
  creat_e date
Error at Command Line:1 Column:0
Error report:
SQL Error: ORA-00604: error occurred at recursive SQL level 1
ORA-20002: Error (-6550): ORA-06550: line 1, column 77:
PLS-00103: Encountered the symbol ";" when expecting one of the following:
   . ( ) , * % & = - + < / > at in is mod remainder not rem
   <an exponent (**)> <> or != or ~= >= <= <> and or like like2
   like4 likec between || multiset member submultiset
The symbol ";" was ignored.
ORA-06550: line 1, column 102:
PLS-00103: Encountered the symbol "-" when expecting one of the following:
   <an identifier> <a double-quoted delimited-identifier>
   current delete exists prior
Th
ORA-06512: at line 32
00604. 00000 -  "error occurred at recursive SQL level %s"
*Cause:    An error occurred while processing a recursive SQL statement
           (a statement applying to internal dictionary tables).
*Action:   If the situation described in the next error on the stack
           can be corrected, do so; otherwise contact Oracle Support.