Connect by hanged on 10g r2 ?

Hi all:
  
SQL> SELECT ID, PARENT_ID FROM V$SQL_PLAN WHERE HASH_VALUE=2425599108;

ID PARENT_ID
---------- ----------
0
1 0
2 1
3 2
4 2
5 1

6 rows selected.

Elapsed: 00:00:00.01
SQL> SELECT ID, PARENT_ID FROM V$SQL_PLAN WHERE HASH_VALUE=2425599108
2 CONNECT BY PARENT_ID = PRIOR ID START WITH ID=0;
SELECT ID, PARENT_ID FROM V$SQL_PLAN WHERE HASH_VALUE=2425599108
*
ERROR at line 1:
ORA-01013: user requested cancel of current operation -- hanged.


Elapsed: 00:00:42.27

SQL> SELECT * FROM (SELECT ID, PARENT_ID FROM V$SQL_PLAN WHERE 
HASH_VALUE=2425599108 )
CONNECT BY PARENT_ID = PRIOR ID START WITH ID=0; 2

ID PARENT_ID
---------- ----------
0
1 0
2 1
3 2
4 2
5 1

6 rows selected.

Elapsed: 00:00:00.02


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  • » Connect by hanged on 10g r2 ?