Error in a plsql-block

Question

declare
CURSOR c1 IS SELECT table_name FROM dba_tables WHERE owner='COGNOS';
BEGIN
FOR rec_table IN c1
LOOP
dmbs_output.put_line ('select SYS.DBMS_STATS.GATHER_TABLE_STATS(ownname=> ''COGNOS'',
tabname=> '||rec_table.table_name||',
cascade=> TRUE,
degree=> 5,
estimate_percent=> 100,
method_opt=> ''for all columns size skewonly'');' ;
END LOOP;
END;
where is it? i get:
ORA-06550: line 11, column 88:
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_ as between from using || member SUBMULTISET_
The symbol ")" was substituted for ";" to continue.
Details:
declare
CURSOR c1 IS SELECT table_name FROM dba_tables WHERE owner='COGNOS';
BEGIN
FOR rec_table IN c1
LOOP
dmbs_output.put_line ('select SYS.DBMS_STATS.GATHER_TABLE_STATS(ownname=> ''COGNOS'',
tabname=> '||rec_table.table_name||',
cascade=> TRUE,
degree=> 5,
estimate_percent=> 100,
method_opt=> ''for all columns size skewonly'');' ;
END LOOP;
END;
Error at line 1
ORA-06550: line 11, column 88:
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_ as between from using || member SUBMULTISET_
The symbol ")" was substituted for ";" to continue.

Answer 1

You've misspelt the dbms_output name, plus you're missing the final ) before you end the loop.
Try this:
declare
  CURSOR c1 IS SELECT table_name FROM   dba_tables WHERE  owner='COGNOS';
BEGIN
  FOR rec_table IN c1
  LOOP
   dbms_output.put_line ('select SYS.DBMS_STATS.GATHER_TABLE_STATS(ownname=> ''COGNOS'',
                                     tabname=> '||rec_table.table_name||',
                                     cascade=> TRUE,
                                     degree=> 5,
                                     estimate_percent=> 100,
                                     method_opt=> ''for all columns size skewonly'');');
  END LOOP;
END;
/