SQL & PL/SQL :: Identifying Row Lock Condition?
May 6, 2013I have a situation where I need to check if a row in the table locked i.e (Select for Update with NO WAIT applied on it). If yes go fetch the next row .
View 4 Replies
ADVERTISEMENT
Server Administration :: Use Of LM ( Lock Mode) In V$lock?
Oct 4, 2012we know we can see lock mode held in session can be analysed using LM column in v$lock.But i confused in seeing LM column it all shows in numbers from 0 to 6.
eg
0,'None(0)',
1,'Null(1)',
2,'Row Share(2)',
3,'Row Exclu(3)',
4,'Share(4)',
5,'Share Row Ex(5)',
6,'Exclusive(6)')
SQL & PL/SQL :: Identifying Parent ID
Oct 22, 2011I want to insert data from table A and dump into table B.The data in Table A looks like this:
Level_IDCode Type
ETY_1A......... 100000116
ETY_1B......... 100000116
ETY_1C......... 100000116
ETY_2AA........ 100000117
ETY_2AB........ 100000117
ETY_2AC........ 100000117
ETY_2BA........ 100000117
ETY_2BB........ 100000117
ETY_2BC........ 100000117
ETY_3AAA....... 100000118
ETY_3AAG....... 100000118
ETY_3AAI....... 100000118
ETY_3AAX....... 100000118
[code]....
And I want to dump the data into Table B which will look like this:
Level_ID Code Type Parent_cd
ETY_1A.........100000116null
ETY_1B.........100000116null
ETY_1C.........100000116null
ETY_2AA........100000117A
ETY_2AB........100000117A
ETY_2AC........100000117A
ETY_2BA........100000117B
ETY_2BB........100000117B
ETY_2BC........100000117B
ETY_3AAA.......100000118AA
ETY_3AAG.......100000118AA
ETY_3AAI.......100000118AA
[code]....
I need to populate a column called Parent Cd with the values that sits at the base level of the hierarchy. So, if the code A sits at the base level then its parent is NULL and the parent for code AA, AB, and AC will be A and parent for AAA, AAG will be AA and so on.The level_IDs are upto 10 and there are close to 400,000 records.
SQL & PL/SQL :: Identifying Column Name Based On A Value
Apr 11, 2011I would like to know, how to:
1) search for a given value in a row, and
2)in that row, identify the name of the column that contains the value
Search scope is only a single row.
Materialized View Identifying Modifications
Sep 5, 2013I am new to Oracle and I inherited an existing database. I have a materialized view on a table that uses a materialized view log. I have been asked to see if it is possible to categories the rows by change type (inserted, updated or deleted) and populate another materialized view or table accordingly. If this is possible then how can it be achieved.
View 1 Replies View RelatedSQL & PL/SQL :: Trigger - Identifying Whether Fired From Oracle
Jun 10, 2010I have an update trigger that runs a package when fired. I only want this package to run if it is NOT fired from an Oracle Forms application. Ie. A user might update table ABC from an Oracle Form. In this instance the trigger would fire, but I don't want to run the package within the trigger. If the user logs onto PL/SQL developer and updates the table, the trigger would fire and the package must run.
I was thinking of using the field 'program' from v$session. If it is null (it's being fired from an Oracle Forms application) if it has a value (it's coming from SQL*Plus / Pl/sql Developer).
Identifying Default Users Then Listing All 30
May 30, 2013I frequently need to run queries to do things like sum space used by each schema, but excluding all of the default system users. Is there a better way to identify the default users than listing all 30 of them in a "not in" expression? For example in sql server to query user databases you just say "with database_ id > 4". Is there something simple like that in Oracle to identify all default users?
View 6 Replies View RelatedReplication :: Materialized View Identifying Modifications 10g?
Sep 5, 2013I inherited an existing database. I have a materialised view on a table that uses a materialised view log. I have been asked to see if it is possible to categorise the rows by change type (inserted, updated or deleted) and populate another materialised view or table accordingly. If this is possible then how can it be achieved.
View 12 Replies View RelatedServer Administration :: Identifying Proxied User Sessions
Mar 30, 2011I'm sure you are all familiar with proxy users, they've been around since 9i: orcl> create user low identified by low;
User created.
orcl> create user high identified by high;
User created.
orcl> grant dba to high;
Grant succeeded.
orcl> alter user high grant connect through low;
User altered.
orcl> connect low[high]/low
Connected.
orcl> sho user
USER is "HIGH"
orcl>
Is there any way that I can find out which of the current sessions was proxied, and through what user? I know that from within the session I can query my userenv context and find out, but I can't see how to do it otherwise. It must be possible: the audit trail records both the real user and the proxy user.
Server Administration :: ORA-01565 / Error In Identifying File
Sep 14, 2010I need to increase the size of shared pool for that i need to change the size of parameter sga_target and sga_max_size these are static parameter so that I need to change in spfile first then start instance then these parameter will get change. But when I create pfile from spfile it gives error:
ERROR at line 1:
ORA-01565: error in identifying file '?/dbs/spfile@.ora'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Server Administration :: Identifying Two Databases Involved In Distributed Transaction?
Oct 24, 2013I am on Oracle 11.2.0.3 on Linux. In my production database, I am getting this alert, in the alert log:
--the below two lines are from alert log.
Error 604
trapped in 2PC on transaction 50.73.546578. Cleaning up.
--query from a data dictionary view
SQL> select count(*) from DBA_2PC_PENDING;
COUNT(*)
----------
1
When I query the production database I see that there is one row in the DBA_2PC_PENDING view. But I dont' know how to identify which are the databases that are involved in this distributed transaction. That is my first issue - how to identify which are the two databases that are involved in the distributed transaction?
Error In Identifying Control File / Database Not Mounted ORACLE Instance Shut Down
Nov 21, 2012i have a problem when i try to login to oracle...i found this message error.
ora-01033 oracle initialization or shutdown in progressafter i logged on with / as sysdba...i did the following
SQL> shutdown immediate;
ORA-01507: database not mountedORACLE instance shut down.
SQL> startup mount;
[code]....
TX Lock Without Corresponding TM Lock
Jul 23, 2012I was pretty sure that every TX lock needs TM lock (at least one). But now on my 9.2.0.8 I can see:
SQL> select * from v$lock where type <> 'MR';
ADDR KADDR SID TY ID1 ID2 LMODE REQUEST CTIME BLOCK
---------------- ---------------- ---------- -- ---------- ---------- ---------- ---------- ---------- ----------
070000026525D648 070000026525D668 4 RT 1 0 6 0 6551105 0
070000026525D3E8 070000026525D408 5 XR 4 0 1 0 6551108 0
070000026525D6E0 070000026525D700 6 TS 2 1 3 0 6551103 0
0700000267173060 07000002671731D8 36 TX 524304 1532490 6 0 2952 0
0700000266EC07F0 0700000266EC0968 63 TX 655400 1550373 6 0 3750 0
0700000266EC0E78 0700000266EC0FF0 65 TX 720899 1461986 6 0 3711 0
0700000265FB6638 0700000265FB67B0 79 TX 327689 1556563 6 0 3825 0
0700000266EDEA08 0700000266EDEB80 85 TX 786469 1365502 6 0 3461 0
0700000266F52498 0700000266F52610 101 TX 196609 1556026 6 0 3850 0
0700000266EDDD10 0700000266EDDE88 126 TX 1114150 1344174 6 0 1474 0
0700000266F517A0 0700000266F51918 137 TX 589849 1605371 6 0 6345 0
07000002671554B8 0700000267155630 207 TX 262156 1529066 6 0 3826 0
07000002670E13B8 07000002670E1530 238 TX 917504 1391304 6 0 66 0
0700000266D094A8 0700000266D094D0 238 TM 194337 0 2 0 35 0
0700000266D093D8 0700000266D09400 238 TM 43802 0 2 0 35 0
0700000266D09308 0700000266D09330 238 TM 7387 0 2 0 35 0
0700000266D09238 0700000266D09260 238 TM 7374 0 2 0 35 0
0700000266D09168 0700000266D09190 238 TM 7380 0 3 0 35 0
0700000266D09098 0700000266D090C0 238 TM 7228 0 3 0 66 0
0700000266F51E28 0700000266F51FA0 261 TX 393224 1563714 6 0 4586 0
So whats can cause this, I can see that TX locks are mostly from JDBC connection from Application server .
Enq - TX - Row Lock Contention?
Oct 10, 2012In my current project, I am handling an Oracle database with version 10.2.0.3. I analyzed the AWR report for the past month abd saw the following wait events consistently:
CPU time - 45.6% (% Total Call Time)
db file sequential read - 30.6% (% Total Call Time)
enq: TX - row lock contention - 18.8 % (% Total Call Time)
I have uploaded the report for your reference.What should be my approach to troubleshoot this?
Attached File(s)
awr_report.html ( 382.28K )
Number of downloads: 6
SQL & PL/SQL :: How To Lock Particular Row In A Table
Jul 19, 2012how one can lock a particular row in a table.for example i have a employee table in which 50 records. now i want to lock only 10 records of the employee table.
View 8 Replies View RelatedSQL & PL/SQL :: Row Level Lock
Mar 14, 2011I have a transaction table with some custom properties and two status columns. There are 2 different applications(.Net and Pl/SQL Procedure) using the table. Both the process run parallel and fetch records one by one, perform some calculation and update the status column.
-.Net updates - Extraction_status
-Pl/SQL updates - Ingestion_status
There are likely more chances that both applications will fetch the sane record and try to update the same row. This will cause a lock. Can i use row level lock before update by each application? Or is there any other methods/process in which this can be handled. ?
SQL & PL/SQL :: Lock On Loop
Aug 28, 2012begin
for i in 1..10000 loop
update table1
set col1= col1+1
where type =1;
commit;
end loop;
end;
My question is, if a strored procedure contains the script above and the said procedure will be invoked by two or more sessions at the same time. Does it mean that the 1st session will lock the related rows and other sessions will have to wait for loop in session one to finish?
PL/SQL :: How To Lock Session
Jul 18, 2013i have application where user logs and perform manipulation operation such as insert and update on database table.some time its possible that same user login twice, i just want to hold one session until and unless dml operation perform by another session gets complete.how to accomplish this in database level .
View 6 Replies View RelatedPL/SQL :: Lock On Package
Feb 14, 2013I am unable to compile my package because of a lock being held on it . Let me provide the details for better clarity .
select * from dba_ddl_locks where session_id=111 and owner='RAHUL';
session_id owner name type mode_held mode_requested
111 RAHUL RAHUL_PKG BODY NULL None
111 RAHUL RAHUL_PKG Table/Procedure/Type NULL NoneThe session details of the session id 111 is as below
select sid,serial#,user#,username,command,status,process,sql_exec_start from v$session where sid=122
sid serial# user# username command status process SQL_EXEC_START
111 3558 222 RAHUL 47 KILLED 4420 13-DEC-12 02.00.00 AM
The strange this is that we have tried killing this session and the status above even shows ' 'KILLED', stilll the dba_ddl_locks is showing the lock details on the package RAHUL_PKG and we are unable to compile the package (the locking session is running since 13-Dec-2012 ) and we are unable to kill that . Also , is it like if i have executed a package that is referencing some other package then we wont be able to compile the referenced package until and unless the dependent package has completed its execution ??
Rowlevel Dead Lock
Aug 19, 2011In my trace file am getting the following error, I understand this is due to the row level deadlock between two sessions accessing the same rows in a table.
*** 2011-08-17 20:22:27.969
DEADLOCK DETECTED ( ORA-00060 )
[Transaction Deadlock]
The following deadlock is not an ORACLE error. It is a deadlock due to user error in the design of an application or from issuing incorrect ad-hoc SQL. The following information may aid in determining the deadlock:
Deadlock graph:
---------Blocker(s)-------- ---------Waiter(s)---------
Resource Name process session holds waits process session holds waits
TX-016e0017-0001e10f 75 2370 X 153 2269 X
TX-0217000f-00009247 153 2269 X 75 2370 X
session 2370: DID 0001-004B-0015DCCEsession 2269: DID 0001-0099-000FB698
session 2269: DID 0001-0099-000FB698session 2370: DID 0001-004B-0015DCCE
Rows waited on:
Session 2370: obj - rowid = 000329C9 - AAAynJAAIAAEkVIAAG
(dictionary objn - 207305, file - 8, block - 1197384, slot - 6)
Session 2269: obj - rowid = 000329F2 - AAAynyAARAAEhMBAAA
(dictionary objn - 207346, file - 17, block - 1184513, slot - 0)
----- Information for the OTHER waiting sessions -----
Session 2269:
sid: 2269 ser: 36409 audsid: 563917587 user: 107/PICKLE flags: 0x8000041
pid: 153 O/S info: user: oracle, term: UNKNOWN, ospid: 27324
image: oracle@snokhup4000
client details:
O/S info: user: appsrv, term: , ospid: 1234
machine: snokhup255 program:
current SQL:
DELETE FROM moderation_queue WHERE parent_id =:1 AND submission_type =:2 AND site_id IN ( select site_id from sites where personna_id= 1 )
----- End of information for the OTHER waiting sessions -----
Information for THIS session:
----- Current SQL Statement for this session (sql_id=5rywrxc0mpcc1) -----
delete from shadow_users where user_id=:1 and personna_id=:2
--------------------------------------------------------------------------------
how to overcome or avoid the rowlevel deadlock.
SQL & PL/SQL :: How To Release Lock On Table
Apr 12, 2010How to Release Lock on table ? ( without killing session )
create table x ( a number);
insert into x(a) values (1);
Lets lock table.
declare
cursor c is select * from x for update;
begin
open c ;
end;
[code]....
Instance Lock On ARC4
Mar 1, 2012In the past, we setup a standby database on our production server. My OS is HPUX, Oracle 10g and my database is in archive mod. We are no longer using the standby database method. My problem now is that one of my tablespace (/oradata/tn/rd2_temp 20gb) became 100% full on my production system. In trying to provide more space, I removed one of the standby redo logs. Instead of using ALTER database, I just did a rm from the OS. As I said earlier my STANDBY DB is inoperatable.
When I tried to drop the tablespace(/oradata/tn/rd2_temp it is 20gb), I am getting an oracle error (ora-19528 redo logs being cleared may need access to files). Im also getting and INSTANCE LOCK on ARC4. The rd2_temp tablespace is now offline. If I get rid of rd2_temp, I will be able to gain more space back to /oradata/tn.
My database is still up and working okay.
SQL & PL/SQL :: How To Use Lock Statement In Oracle
Sep 17, 2013I have a scenario where lock statements in mysql need to be converted to oracle. how to convert them.
LOCK TABLES `ABC` WRITE;
UNLOCK TABLES;
SQL & PL/SQL :: Lock Table Manually?
Jul 15, 2010How can one lock a table manually?
View 7 Replies View RelatedSQL & PL/SQL :: DEADLOCK Found When Trying To Get Lock
Dec 5, 2012While i am trying to execute below mentioned query i am facing "DEADLOCK FOUND WHEN TRYING TO GET LOCK" error.
UPDATE PLAN
SET PLAN_PMS_BLOCK_ID =''
WHERE PLAN_PMS_BLOCK_ID<>''
AND PLAN_PMS_BLOCK_ID NOT BETWEEN '0' AND '9'
AND PLAN_PMS_BLOCK_ID NOT BETWEEN 'A' AND 'Z'
AND PLAN_PMS_BLOCK_ID NOT IN('-')
AND LENGTH(PLAN_PMS_BLOCK_ID )=1;
How And When The Database Release A Row Lock
May 30, 2013We are using the following statement to obtain a row lock in a table in the database(ORACLE 10G), SELECT * FROM {TABLE_NAME} WHERE ID = 1 for update and if we succeed grabbing the row lock we will continue to issue a update statement every 30 seconds to preserve the lock as far as possible. here is the update statement to preserve the lock,
UPDATE {TABLE_NAME} SET time = ? WHERE ID = 1.
As you see more longer we keep holding the row lock , more update statements are submitted in the pending transaction. In normal case our application can grab the exclusive row lock and works for a long time,however sometimes a connection reset exception is thrown and our application will close the connection(I assume the pending transaction will be rolled back by the database) and exit the JVM. Since other applications will keep trying to grab the same row lock to become the master role, we expect one of them can succeed but they are all failed because the database has not released the row lock as expected. how and when the row lock can get released in our use case?
Deadlock Detected While Trying To Lock Object XDB
Jul 19, 2007I keep getting an ora-04020: deadlock detected while trying to lock object XDB. SDNRB..The statement I'm trying to issue is:
REVOKE execute on abc."descript_T" FROM PUBLIC;
I am not able to find a solution for this besides the fact of trying the operation again at a later time.I did, but get the same error every single time.
Security :: How To Know Which Session Causing TX Lock
Feb 28, 2011I have to find out the cause of a lock where a particular session with some serial no is causing a TX level lock for certain duration.
View 17 Replies View RelatedSQL & PL/SQL :: Getting Error ORA-00069 Cannot Acquire Lock
Jul 31, 2010I am getting the Oracle Database error "ORA-00069 cannot acquire lock -- table locks disabled for string" in a stored proc. According to some sites I looked at, it says the Cause is "A command was issued that tried to lock the table indicated in the message. Examples of commands that can lock tables are: LOCK TABLE, ALTER TABLE ... ADD (...), and so on.". And the Action they suggest is "Use the ALTER TABLE ... ENABLE TABLE LOCK command, and retry the command".
I am not doing either a lock table or alter table command in my procedure, so what else could be causing this?
SQL & PL/SQL :: Find Lock On Particular Date And Time?
Dec 18, 2012we can easily find out the locks which are currently active session.
Is any other way to find out locks on particular date and time using data dictionary?
For example, we have to find whether TT_objects occured the lock or not on ON yesterday.