V$LOCKED_OBJECT
This view lists all locks acquired by every transaction on the
system.
Column
Datatype
Description
XIDUSN
NUMBER
Undo segment number
XIDSLOT
NUMBER
Slot number
XIDSQN
recipients of list ORACLE-LSubject: RE:
Locking tables in Oracle
V$LOCKED_OBJECT
This view lists all locks acquired by every transaction on the
system.
Column
Datatype
Description
XIDUSN
NUMBER
Undo
Rajesh,
2 -- ROW SHARE or SHARE UPDATE
3 -- ROW EXCLUSIVE
4 -- SHARE
5 -- SHARE ROW EXCLUSIVE
6 -- EXCLUSIVE
Mike
-Original Message-
Sent: Thursday, March 27, 2003 3:14 PM
To: Multiple recipients of list ORACLE-L
Hi All,
Does anybody has any insight of dynamic view v$locked_object?
SELECT
OWNER||'.'||OBJECT_NAME Object,
OS_USER_NAME Terminal,
ORACLE_USERNAME Locker,
PROGRAM Program,
NVL(lockwait,'ACTIVE') Wait,
DECODE(LOCKED_MODE,
2, 'ROW SHARE',
3, 'ROW EXCLUSIVE',
4, 'SHARE',
5, 'SHARE ROW EXCLUSIVE',
6, 'EXCLUSIVE', 'UNKNOWN') Lockmode,
[mailto:[EMAIL PROTECTED]Sent: Thursday, March 27, 2003
4:29 PMTo: Multiple recipients of list ORACLE-LSubject:
RE: Locking tables in Oracle
Mladen,
What does it mean if locked_mode
column is populated with 0 or 3 or 6. What kind of locking does it shows (RS,
X etc...)?
Thanks
Title: RE: Locking tables in Oracle
-Original Message-
From: Pillai, Rajesh [mailto:[EMAIL PROTECTED]]
What does it mean if locked_mode column is populated with 0 or 3 or
6. What kind of locking does it shows (RS, X etc...)?
I know someone has already answered this, but you can
Dennis , thanks for your suggestions.
It seems detection is the only viable option to avoid locking.
i'll try to get the suggested book from somewhere .
ratnesh
-Original Message-
WILLIAMS
Sent: Tuesday, July 23, 2002 9:08 PM
To: Multiple recipients of list ORACLE-L
Ratnesh
I
Ratnesh
I assume you are using the JDBC interface, rather than J2EE. You may want
to consider buying the book Java Programming with Oracle JDBC by Donald
Bales. He devotes a chapter to this subject. One issue he raises that will
limit your options is whether you have other applications besides
Yes.
If your application executes a DML statement and then
just hangs around without commiting or doing a
rollback this will occur. A user forgetting to commit
or rollback from SQL*Plus is often the cause of
locking problems.
Bill
--- Hamid Alavi [EMAIL PROTECTED] wrote:
List,
I am
Yes.
-Original Message-
From: Hamid Alavi [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, June 11, 2002 3:59 PM
To: Multiple recipients of list ORACLE-L
Subject: Locking Issue
List,
I am monitoring a locking issue on database(oracle 8.1.7.0 on
sun ), when I
look at all active
ORA-2 is an error raised by raise_application_error.
In other words, you must examine the code, as it is
a custom error message.
Jared
On Tuesday 04 September 2001 07:25, Libal, Ivo wrote:
Hello All
we got a problem with DBMS_ALERT package. On clients we get sometimes an
error message:
Jared, wish that was entirely true, look at
$ORACLE_HOME/rdbms/admin/dbmsutil.sql some of oracle's code is using low
numbered 2 error nums :((at least thats that the internal docs say)
joe
[EMAIL PROTECTED] 09/04/01 12:32PM
ORA-2 is an error raised by
raise_application_error.In
To: [EMAIL PROTECTED]
cc:
Subject: Fwd: RE: Locking issue
This message comes from DBMS_ALERT_INFO package body. You need to contact
OWS.
Raj
__
Rajendra Jamadagni MIS, ESPN Inc.
Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN
jkstill@cybco To: [EMAIL PROTECTED]
n.com cc:
Subject: Fwd: Re: Locking issue
Kevin,
Here's one that has been posted to our site recently by a customer
(www.cool-tools.co.uk Support User Defined Collections BLOCKER):
select l.sid sid,
s.username username,
s.program program,
t.sql_text,
u.name
Title: Message
Take a look at www.vampired.net under scripts and locks,
there are a few decent scripts there.
"Do not criticize someone until you walked a mile in their shoes, that way
when you criticize them, you are a mile a way and have their shoes."
Christopher R. Spence Oracle DBA Phone:
Title: Message
Thanks Christopher. I will see
what I can get out of them.
-Original Message-From: Christopher Spence
[mailto:[EMAIL PROTECTED]]Sent: Thursday, August 23, 2001 10:24
AMTo: Multiple recipients of list ORACLE-LSubject: RE:
Locking Issue
Take a look
check out $ORACLE_HOME/rdbms/admin/utlockt.sql
joe
[EMAIL PROTECTED] 08/22/01 02:46PM
Back to the experts
We have an
application that, litterally overnight, developed locking
issues.
Our users
start working just fine. Then, right now cause unknown, our inserts
start
Try with this query:
select xidusn, object_id, session_id, locked_mode
from v$locked_object;
If developer created table with bitmap index it can be reason for locking
(we had such problem).
HTH,
Sonja
-Original Message-
Sent: Tuesday, March 20, 2001 11:27 PM
To:
Hi Austin
I dont know wether it can be done from the DB or not...
But you can do it from your application by setting a flag
when ever an update is happening and selecting only those
records which doesn't hjave this flag set.
Regards,
Mohan
Kris Austin wrote:
hi list,
how can you prevent
You can lock a table with:
lock table scott.emp in exclusive mode
This should lock that table for the session you are in, not sure what
permissions you need for it though?
Mark
-Original Message-
Sent: Monday, February 12, 2001 07:31
To: Multiple recipients of list ORACLE-L
hi
Kris:
There is no native way of doing this. You would need to write your own
data-access methods -- maybe a stored procedure that returns a ref-cursor.
The procedure would attempt to lock a table before performing the select.
The DML operations on the table would have to lock the same table
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