Hi
I am trying to grant execute on dbms_pipe package to user userA. My
session was hanging. So I went to v$session_wait to find why my session is
hanging. My session was waiting for library cache pin. I looked at x$kglpn,
x$kglob and saw that my statement was requesting the library cache pin on
exclusive mode(3) and few sessions were executing PL/SQL blocks with calls
to dbms_pipe.unpack_message (so holding the same library cache pin in
shared mode). My questions is why would 'grant' will request the library
cache pin in exclusive mode. I am not even granting to the same user who is
holding the pin. Any ideas ?
SQL> l
1 SELECT
2 a.KGLPNMOD, a.KGLPNREQ, b.username, c.KGLNAOBJ,
3 c.KGLOBTYP
4 FROM
5 x$kglpn a,
6 v$session b,
7 x$kglob c
8 WHERE
9 a.KGLPNUSE = b.saddr and
10 --upper(c.KGLNAOBJ) like upper('%testpkg%') and
11 a.KGLPNHDL = c.KGLHDADR
12* and c.kglnaobj='DBMS_PIPE'
SQL> /
KGLPNMOD KGLPNREQ USERNAME KGLNAOBJ KGLOBTYP
---------- ---------- -------------------- -------------------- ----------
2 0 TEST_USER3 DBMS_PIPE 9
2 0 TEST_USER3 DBMS_PIPE 11
2 0 TEST_USER3 DBMS_PIPE 9
2 0 TEST_USER3 DBMS_PIPE 11
2 0 TEST_USER3 DBMS_PIPE 9
2 0 TEST_USER3 DBMS_PIPE 11
0 3 SYS DBMS_PIPE 9
2 0 TEST_USER3 DBMS_PIPE 9
2 0 TEST_USER3 DBMS_PIPE 11
Thanks
Riyaj "Re-yas" Shamsudeen
Certified Oracle DBA
i2 technologies www.i2.com
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