Niall,
The environment is not a RAC.
Regards
Eriovaldo
2017-12-30 8:04 GMT-02:00 Niall Litchfield <niall.litchfield@xxxxxxxxx>:
Is this a RAC database? You'll need to look also at the instance and
blocking_status columns in v$session to rely on the blocking_session column
in v$session. https://docs.oracle.com/database/121/REFRN/
GUID-28E2DC75-E157-4C0A-94AB-117C205789B9.htm#REFRN30223 IIRC EM12c also
is not RAC aware in its blocking sessions page.
On Sat, Dec 30, 2017 at 3:07 AM, Eriovaldo Andrietta <
ecandrietta@xxxxxxxxx> wrote:
Hello,
I got an issue related to lock.
Now the daabase was re-started and the issue is solved.
But during investigation I did not get sucess to identify who were
locking a table.
A table is used like this:
SELECT ID FROM TABLE_BLA
where id = :1
for upate;
The query did not return the result and looking for lock using this query
:
select s.sid, s.blocking_session, do.object_name,
row_wait_obj#, row_wait_file#, row_wait_block#, row_wait_row#,
dbms_rowid.rowid_create ( 1, ROW_WAIT_OBJ#, ROW_WAIT_FILE#,
ROW_WAIT_BLOCK#, ROW_WAIT_ROW# )
from v$session s, dba_objects do
where s.ROW_WAIT_OBJ# = do.OBJECT_ID
I saw the row_wait_obj#, ROW_WAIT_FILE#, ROW_WAIT_BLOCK# and
ROW_WAIT_ROW# values.
In this situation how can I find the blocker?
or
I used a lot of queries that show blocker and locked but without sucess
to see the blocker.
Regards
Eriovaldo
--
Niall Litchfield
Oracle DBA
http://www.orawin.info
