Lock a sequence?

I was wondering if it is possible to lock a sequence. What I have is multiple insert statements that use a sequence. One uses .nextval and the others use current.
I have a program that will call the five inserts in order the first one using .nextval and the other four using current. My concern is that if the program is called twice at the same time the second .nextval will be called before my first four current calls are finished. So I was wondering if you could lock a sequence so that .nextval could not be called before I was finished using the sequence in my sql statements.

nextval and currval are session specific so there should be no issues. You don't want to lock a sequence.

Similar Messages

Lock a sequence in teststand from opening

Is there any possibility that a sequence created can be locked from opening like locking a LabVIEW vi from opening.
Solved!
Go to Solution.

You can lock a sequence as not viewable. Is that what you mean? It will still be openable, but will require a password to view the contents.
Look on the advanced tab of the sequence file properties dialog. You should see a password setting section. You can lock it as not viewable or not editable.
-Doug

Teststand sequence file not locking when locked from a labview running vi

Hi guys,
ok, here's the issue that I have:
I'm running a vi (directly in labview) which is supposed to lock a sequence file in Teststand (with a level 2 protection), but it doesn't have any effect on the sequence file. (the file remains unlocked).
The vi runs just fine, and the strange part is that when I read the lock status (property node in labview) of the sequence file afterwards it appears as "True" (i.e the file has been locked).
(Note: Teststand is closed while running the vi, then I open it to check if the sequence is locked or not)
However, integrating this same vi as step in a separate sequence file in teststand, and running it, will work. Why? Is it possible to
lock a sequence directly by running the vi in labview?
Attached to this message is the block diagram of the vi.
The relevant inputs are:
SequencePath -- sequence file to be locked
Password -- password used to lock file
Version -- Also sets the version of the file
If anyone can help clarify this, I'd appreciate
Thanks
Attachments:
lockseqfile.JPG ‏87 KB

Hi gabolt,
Would you mind answering a few questions for me regarding this issue?
1. Have you tried reading the "locked" property of an unlocked sequence file before setting any properties? Does it read false?
2. What happens if you try to run the VI on a locked sequence file?
3. Are there any differences in the data you are passing to the VI in TestStand versus the inputs you are using when running the VI alone?
4. When TestStand locks the file using the VI, are you able to use the password you assigned to unlock it?
5. Is the version number saved when you run the VI from LabVIEW?
Thank you!
Rick C.

ADF: approach needed to do pre-processing on creation of a record

Hi,
i need a proper approach for doing some select and updates from the database when a new record is created. The select and update is not related to the entity object base table.
at the moment i have overriden the create method in the Enitity Implementation class:
1. Select a value from a table
2. Change this value in the database (and commit)
3. use the new value as a default value in the in the EO's new record
The problem is that i want this to be done as two independant transactions, ie. the update in isolation of the entity objects underlying transaction. I have tried using PreparedStatements and postChanges() (which should commit the first transaction without validating the state of the Entity Object?) But i find that the changes are not effected in the database until commit on the entity object is called.
help appreciated,
Brenden

If you are using Oracle database, I would strongly advise you NOT to use this approach.
First, using the code you have given, you can easily get two different records with the same ID. Image two different sessions (users) that are trying to get their IDs. It is possible that the two sessions read the same last number, each increments this number in its own context and then assign the same number to its newly created record. To avoid this, you should try to lock the sequence row before reading the last number, then increment it, save it back in the database and then release the lock. This is very bad approach that limits severely the concurrency.
Secondly, this approach does not allow you to create two new entities in the same transaction. Committing the transaction in the create() method for the second entity will try to post the first one, which might not have its mandatory fields populated, for example. The transaction will fail to commit as there are non-validated entities in its pending list.
So in brief, I suggest that you use native database sequences for this as generating unique numbers in a concurrent and scalable manner is what they have been created for. You can use DBSequence datatype combined with a before-insert trigger for this.

Is it possible to hide the save function and only use the save as function in teststand

Hi,
When i'm done building a sequence i want to prevent other engineers to save the sequence with the same filename (or version number).
Is it somehow possible to "hide" the save button and only use the save as function?
Or is there another possiblity to solve my problem.
The idea is to have a sequence called Sequence_V1.0.seq which i have build. When installing this in a factory enviroment I would like whenever there is a change needed in the sequence that the version number increases (manual action) (becomes Sequence_V1.1.seq). So from the moment you want to save i would like to only have the function save as. In this way you are obligated to fill in a new sequence name (original sequence will be read-only)
What would even be great if there could be a log of what the changes were
Thx!!!

1) You could mark the file as read-only, by default you would then not be able to save over it. The user could make it not read-only though if they know what they are doing.
2) Another possibility is to lock the sequence file for editing (this is a teststand feature). Go to the Sequence File Property dialog, on the advanced tab, where it says Password Protection, set it to Not Editable and give it a good password. This doesn't however keep someone from saving another file to the same name as the locked one, but they at least won't be able to saved the locked file again without your password, nor will they be able to edit it.
Hope this helps,
-Doug

Small Issue 10.5.8 Update

Two days ago installed the update 10.5.8 and all seemed to be very good.
BUT, now every time I start my iMac 24", Aluminum Intel Core Duo, 2.6GHz my screen defaults to FULL Bright.... I reset the slider bar in System Pref's> Display back to the dimmest (far left) setting and all is well until I shut down and restart. Then after restart of boot up the display is back to FULL Bright.......?????
Hum..... What can I do..?

baltwo,
Wow,,,, now that is what I'd call a real "chicken dance". It about like resetting your car alarm/door lock remote sequence. The only thing you left out is what side of my mouth my tongue should be in and do I hop around on one leg or both. (Only making light my the issue,,,, keeps me sane!)
Before I follow your good instructions, would you think it would be worth a try to download the Apple Site v10.5.8 file and do a reinstall? This install was from "Software Update".
Down here where I live it is already the hour of the "cocktail",,, so,,, I think I'll await your "reinstall yes or no" and 'till the quite of tomorrow morning over coffee to either follow your "chicken dance" instructions or do a clean update reinstall.
I sure thank you for the well outlined advise and instructions!
Now,,, my ice is melting...........

ORA-04021 Issues

Hi,
While trying to compile a package i am receiving an error
CREATE OR REPLACE Package BODY Etl AS
ERROR at line 1:
ORA-04021: timeout occurred while waiting to lock object
OWNER.ETL
But when i am compliling the package with a different name its getting compiled successfully.
Why its behaving in such a fashion?
Kindly answer?
Thanks in advance.

Hi Sid,
The below query will help you check if your resource is being locked
SELECT /*+ ordered */
     --b.kaddr,
     c.sid,
     lock_waiter.waiting_session,
     lock_blocker.holding_session,
     c.program,
     c.osuser,
     c.machine,
     c.process,
     DECODE(u.name,
          NULL,'',
          u.name||'.'||o.name
     ) OBJECT,
     c.username,
     DECODE
          b.TYPE,
          'BL', 'Buffer hash table instance lock',
          'CF', 'Control file schema global enqueue lock',
          'CI', 'Cross-instance function invocation instance lock',
          'CU', 'Cursor bind lock',
          'DF', 'Data file instance lock',
          'DL', 'direct loader parallel index create lock',
          'DM', 'Mount/startup db primary/secondary instance lock',
          'DR', 'Distributed recovery process lock',
          'DX', 'Distributed transaction entry lock',
          'FS', 'File set lock',
          'IN', 'Instance number lock',
          'IR', 'Instance recovery serialization global enqueue lock',
          'IS', 'Instance state lock',
          'IV', 'Library cache invalidation instance lock',
          'JQ', 'Job queue lock',
          'KK', 'Thread kick lock',
          'LA','Library cache lock instance lock (A..P=namespace);',
          'LB','Library cache lock instance lock (A..P=namespace);',
          'LC','Library cache lock instance lock (A..P=namespace);',
          'LD','Library cache lock instance lock (A..P=namespace);',
          'LE','Library cache lock instance lock (A..P=namespace);',
          'LF','Library cache lock instance lock (A..P=namespace);',
          'LG','Library cache lock instance lock (A..P=namespace);',
          'LH','Library cache lock instance lock (A..P=namespace);',
          'LI','Library cache lock instance lock (A..P=namespace);',
          'LJ','Library cache lock instance lock (A..P=namespace);',
          'LK','Library cache lock instance lock (A..P=namespace);',
          'LL','Library cache lock instance lock (A..P=namespace);',
          'LM','Library cache lock instance lock (A..P=namespace);',
          'LN','Library cache lock instance lock (A..P=namespace);',
          'LO','Library cache lock instance lock (A..P=namespace);',
          'LP','Library cache lock instance lock (A..P=namespace);',
          'MM', 'Mount definition global enqueue lock',
          'MR', 'Media recovery lock',
          'NA', 'Library cache pin instance lock (A..Z=namespace)',
          'NB', 'Library cache pin instance lock (A..Z=namespace)',
          'NC', 'Library cache pin instance lock (A..Z=namespace)',
          'ND', 'Library cache pin instance lock (A..Z=namespace)',
          'NE', 'Library cache pin instance lock (A..Z=namespace)',
          'NF', 'Library cache pin instance lock (A..Z=namespace)',
          'NG', 'Library cache pin instance lock (A..Z=namespace)',
          'NH', 'Library cache pin instance lock (A..Z=namespace)',
          'NI', 'Library cache pin instance lock (A..Z=namespace)',
          'NJ', 'Library cache pin instance lock (A..Z=namespace)',
          'NK', 'Library cache pin instance lock (A..Z=namespace)',
          'NL', 'Library cache pin instance lock (A..Z=namespace)',
          'NM', 'Library cache pin instance lock (A..Z=namespace)',
          'NN', 'Library cache pin instance lock (A..Z=namespace)',
          'NO', 'Library cache pin instance lock (A..Z=namespace)',
          'NP', 'Library cache pin instance lock (A..Z=namespace)',
          'NQ', 'Library cache pin instance lock (A..Z=namespace)',
          'NR', 'Library cache pin instance lock (A..Z=namespace)',
          'NS', 'Library cache pin instance lock (A..Z=namespace)',
          'NT', 'Library cache pin instance lock (A..Z=namespace)',
          'NU', 'Library cache pin instance lock (A..Z=namespace)',
          'NV', 'Library cache pin instance lock (A..Z=namespace)',
          'NW', 'Library cache pin instance lock (A..Z=namespace)',
          'NX', 'Library cache pin instance lock (A..Z=namespace)',
          'NY', 'Library cache pin instance lock (A..Z=namespace)',
          'NZ', 'Library cache pin instance lock (A..Z=namespace)',
          'PF', 'Password File lock',
          'PI', 'Parallel operation locks',
          'PS', 'Parallel operation locks',
          'PR', 'Process startup lock',
          'QA','Row cache instance lock (A..Z=cache)',
          'QB','Row cache instance lock (A..Z=cache)',
          'QC','Row cache instance lock (A..Z=cache)',
          'QD','Row cache instance lock (A..Z=cache)',
          'QE','Row cache instance lock (A..Z=cache)',
          'QF','Row cache instance lock (A..Z=cache)',
          'QG','Row cache instance lock (A..Z=cache)',
          'QH','Row cache instance lock (A..Z=cache)',
          'QI','Row cache instance lock (A..Z=cache)',
          'QJ','Row cache instance lock (A..Z=cache)',
          'QK','Row cache instance lock (A..Z=cache)',
          'QL','Row cache instance lock (A..Z=cache)',
          'QM','Row cache instance lock (A..Z=cache)',
          'QN','Row cache instance lock (A..Z=cache)',
          'QP','Row cache instance lock (A..Z=cache)',
          'QQ','Row cache instance lock (A..Z=cache)',
          'QR','Row cache instance lock (A..Z=cache)',
          'QS','Row cache instance lock (A..Z=cache)',
          'QT','Row cache instance lock (A..Z=cache)',
          'QU','Row cache instance lock (A..Z=cache)',
          'QV','Row cache instance lock (A..Z=cache)',
          'QW','Row cache instance lock (A..Z=cache)',
          'QX','Row cache instance lock (A..Z=cache)',
          'QY','Row cache instance lock (A..Z=cache)',
          'QZ','Row cache instance lock (A..Z=cache)',
          'RT', 'Redo thread global enqueue lock',
          'SC', 'System commit number instance lock',
          'SM', 'SMON lock',
          'SN', 'Sequence number instance lock',
          'SQ', 'Sequence number enqueue lock',
          'SS', 'Sort segment locks',
          'ST', 'Space transaction enqueue lock',
          'SV', 'Sequence number value lock',
          'TA', 'Generic enqueue lock',
          'TS', 'Temporary segment enqueue lock (ID2=0)',
          'TS', 'New block allocation enqueue lock (ID2=1)',
          'TT', 'Temporary table enqueue lock',
          'UN', 'User name lock',
          'US', 'Undo segment DDL lock',
          'WL', 'Being-written redo log instance lock',
          b.TYPE
     ) lock_type,
     DECODE
          b.lmode,
          0, 'None', /* Mon Lock equivalent */
          1, 'Null', /* N */
          2, 'Row-S (SS)', /* L */
          3, 'Row-X (SX)', /* R */
          4, 'Share', /* S */
          5, 'S/Row-X (SRX)', /* C */
          6, 'Exclusive', /* X */
          TO_CHAR(b.lmode)
     ) mode_held,
     DECODE
          b.request,
          0, 'None', /* Mon Lock equivalent */
          1, 'Null', /* N */
          2, 'Row-S (SS)', /* L */
          3, 'Row-X (SX)', /* R */
          4, 'Share', /* S */
          5, 'S/Row-X (SSX)', /* C */
          6, 'Exclusive', /* X */
          TO_CHAR(b.request)
     ) mode_requested
FROM
     v$lock b
     ,v$session c
     ,sys.USER$ u
     ,sys.obj$ o
     ,( SELECT * FROM sys.dba_waiters) lock_blocker
     ,( SELECT * FROM sys.dba_waiters) lock_waiter
WHERE
b.sid = c.sid
AND u.USER# = c.USER#
AND o.obj#(+) = b.id1
AND lock_blocker.waiting_session(+) = c.sid
AND lock_waiter.holding_session(+) = c.sid
AND c.username != 'SYS'
ORDER BY kaddr, lockwait
The query is from the following site http://www.orafaq.com/scripts/performance/lockall.txt
Unless, the object you are trying to create/replace is being locked by another database object, i dont see how you ll get this error... are you using read write / file access or any such code? can you share your code? it may be accessing a resource that is locked..
Do let me know if this helps

My n73 is very slow

hi friends
after updating the n73 music edition my mobile is very slow now.
especially when receiving calls ,i have given the option for saying callers name, it vl be more slow and even cant say the names properly.before it was very smooth.i thouught it because of memory full and i deleted some data and there is 800 mb free memory now.
please help me
sumesh

- how much ram do you have left?
- is there any difference in speed, especially after you turn off and on again and run it?
- Running:
1) message: it's slow than S40. But because it needs a second or two as the lock key sequence is using the same key. So after a second, no 2nd key (*) is depressed, it starts "message"
2) Camera is slow because it needs to initialize the hardware. You may find it slower than other phone since the CPU is lower clock. If you have less RAM, it may not start or start very slow.
Hope this would answer some of your questions
Cheers

What are the surrogate key and row_number( )

what are the surrogate key and row_number( ) function, and why do not we always make the row_number a primary key in the table.

Mohannad,
we just try to safe your efforts and to prevent common
mistakes you can make.
Look here.
Your requirement is to avoid gaps in sequence.
OK. But it means you HAVE to lock your sequence
exclusively until you commit transaction.
Also, it means you have to rollback sequence
number to original value if you rollback you
entire transaction.
SQL> create table my_tab (id number);
&nbsp
Table created.
&nbsp
SQL> create table numer_tab (id number);
&nbsp
Table created.
&nbsp
SQL> insert into numer_tab values(0);
&nbsp
1 row created.
&nbsp
SQL> create or replace trigger
2   tr_no_gap
3   before insert on my_tab
4   for each row
5   begin
6    /* Let's lock sequence in exclusive mode */
7    update numer_tab set id = id + 1
8    returning id into :new.id;
9   end;
10 /
&nbsp
Trigger created.Now I havn't to worry about gaps:
Fisrt session:
SQL> insert into my_tab values(null);
&nbsp
1 row created.because my next session is waiting:
SQL> insert into my_tab values(null);
&nbspI do commit in first and second session -everything is OK:
SQL> commit;
&nbsp
Commit complete.
&nbsp
SQL> select * from my_tab;
&nbsp
        ID
         2
         1Now I do the same but do rollback in 1th:
SQL> insert into my_tab values(null);
&nbsp
1 row created.
&nbsp
SQL> rollback;
&nbsp
Rollback complete.and commit in 2th:
SQL> insert into my_tab values(null);
&nbsp
1 row created.
&nbsp
SQL> commit;
&nbsp
Commit complete.No gaps:
SQL> select * from my_tab;
&nbsp
        ID
         2
         3
         1Now I will not lock sequence resource due a transaction:
SQL> create or replace trigger
2   tr_no_gap
3   before insert on my_tab
4   for each row
5   declare
6    pragma autonomous_transaction;
7   begin
8    /* Let's lock sequence in exclusive mode */
9    update numer_tab set id = id + 1
10    returning id into :new.id;
11    commit;
12   end;
13 /
&nbsp
Trigger created.And I repeate my last operation.
Both inserts execute immediately
1th
SQL> insert into my_tab values(null);
&nbsp
1 row created.2th
SQL> insert into my_tab values(null);
&nbsp
1 row created.Now I rollback the first and commit the second.
And what I see is the gap:
SQL> select * from my_tab;
&nbsp
        ID
         2
         3
         5
         1We are just trying to explain what you will have to
pay the serious price of performance in the
absence of gaps and you will have the lack
of Oracle multithreading advantage in this case.
I doubt your customers will happy with that.
Rgds.

Keyboard shortcuts frustratingly slow?

Hi,
I use heavily the keyboard shortcuts from the main screen. I usually assign the New SMS button to the left button. On both my E51 and E71 New SMS from the shortcut takes up to THREE SECONDS to bring up the new text message dialog. I'd say this is unacceptably slow, especially considering that the same functionality from the active standby mode (whatever it's called now) takes 1 second. Bug? Anyone else?
I'd say the same applies to all features assigned to keyboard shortcut, but I haven't tested that much to be 100% positive on this. Nokia -- please fix, that's on the minor, but a major pain-in-the-a usability issues...
Thanks,
Alexander
Solved!
Go to Solution.

hi breach,
the reason there is a 3 sec delay with the left soft key or shortcut is because the left soft key if you press it and immediately you press the [*] key will lock the phone, this is nokia's default lock key sequence-> left soft key + * key
hence, it is actually giving you 3 sec to effectively press the [*] if you want to lock the phone keys, if you dont press anything within 3 sec, then the phone will then execute the assigned application it is supposed to do, which in your case it is the New SMS...
all nokias are like this ever since...

More Speedgrade - Not Working For Me

I tried exporting an EDL from Premiere, but it didn't work when I tried to import it into SG. Got a red error window saying "Unsupported edit info W000 in Edit 4". The Premiere sequence was a 2-camera multicam sequence.
I also still cannot import video files into SG. I navigate to the media folder and click the 'plus' sign, nothing happens
So, in a normal workflow, do you use SpeedGrade instead of the color correction effects in Premiere or in addition to them? I have no idea what the difference between color correction and 'grading' or why you would need to do both. I do mostly long form event videos - live concerts, weddings, etc., in HDV.
According to the tutorials, I would never 'Export to Speedgrade' from Premiere. How should I use the product?
Seems like it would be easier to work on the original long clips in SG before ever importing into Premiere. But, then it doesn't make sense for creating an overall 'look' on a 'locked' edited sequence, which is supposedly what it is for.
I just looked at the 'Supported Files' listing - it lists only Quicktime and AVI. What the heck am I going to do with my HDV footage?

Hmm...I think I see the confusion.
In the black and red samples, we use one XML file to list the
galleries whilch then loads each individual photos.xml file.
My photo album tutorial just uses one photos.xml file. I make
one dataset to get the images and another dataset to get the
photographer info.
So go one step at a time. Take gallery_finished.htm and add
your photos and thumbs to the folders.
Then replace your XML file with the existing one. Open in the
browser and it should work. Make sure that your XML nodes are the
same as the sample one.
The page you have now shows that 'photos.xml' is in the same
folder as gallery_finished.htm. So make sure your path is correct.
Either move the XML file to the same folder or edit
gallery_finished.htm so that the path to the XML file is correct.
I know that quick success is important for keeping with a
project, at least for me. So we want to get this working for you.
Hope this helps,
Donald Booth

Project Manager ruins timecode and tape name

After picture locking a sequence, I tried using Project Manager with the "collect files and copy to new location" option to consolidate for the colorist.
Unfortunately, the resulting files all lack tape names, and have incorrect timecode. This is a serious problem, obviously, since the colorist will never be able to relink these clips. Has anyone else gotten this process working?
I then tried cleaning the media cache database, and I ran the Project Manager again with the same settings. This time, it created files with proper tape names, and incorrect timecode.
This project contains clips from multiple cameras, and the only ones having this problem are from a Sony FS700.

That's a great idea.
Importing the sequence into a new PP project brings the accurate timecode and tape names, so it's easy to export all the clips. But after queueing them up and exporting QuickTimes in AME, the new files all have timecode starting at zero and no tape name! WTF??
Here is a screenshot with proof. You can see file 00001.MTS in Premiere with timecode starting at 46:10:20 and in AME starting at zero.

Check my table

I trying to create index on my table( a big one) but It take a long time, so I don't know that there are anybody update that table or not.
How can i check who using that table?
Are there any way to check?
Thanks,
Kevin

Hi,
You can try to check whether there are locks or not. Set pagesize and linesize high enough and then run:SELECT lpad(sid,3,' ')||'('||(SELECT USERNAME||'@'||MACHINE FROM V$SESSION SES WHERE SES.SID=V$LOCK.SID)||')' SESS,
        DECODE(TYPE,
                'TX','RBS:'||TRUNC(id1/POWER(2,16)) || '@SLOT:' || (BITAND(id1,TO_NUMBER('ffff','xxxx'))+0) ,
                id1||'('||(SELECT OBJECT_NAME FROM DBA_OBJECTS WHERE OBJECT_ID=v$lock.ID1)||')'
        ) OBJECT,
        DECODE(lmode, 0, 'None'
                , 1, 'Null'
                , 2, 'Row Share'
                , 3, 'Row Excl.'
                , 4, 'Share'
                , 5, 'S/Row Excl.'
                , 6, 'Exclusive'
                , lmode, ltrim(to_char(lmode,'990'))) LOCK_MODE,
        DECODE(request, 0, 'None'
                , 1, 'Null'
                , 2, 'Row Share'
                , 3, 'Row Excl.'
                , 4, 'Share'
                , 5, 'S/Row Excl.'
                , 6, 'Exclusive'
                , request, ltrim(to_char(request,'990'))) REQUEST,
        decode(type,
                'BL','Buffer hash table instance lock',
                'CF',' Control file schema global enqueue lock',
                'CI','Cross-instance function invocation instance lock',
                'CS','Control file schema global enqueue lock',
                'CU','Cursor bind lock',
                'DF','Data file instance lock',
                'DL','Direct loader parallel index create',
                'DM','Mount/startup db primary/secondary instance lock',
                'DR','Distributed recovery process lock',
                'DX','Distributed transaction entry lock',
                'FI','SGA open-file information lock',
                'FS','File set lock',
                'HW','Space management operations on a specific segment lock',
                'IN','Instance number lock',
                'IR','Instance recovery serialization global enqueue lock',
                'IS','Instance state lock',
                'IV','Library cache invalidation instance lock',
                'JQ','Job queue lock',
                'KK','Thread kick lock',
                'MB','Master buffer hash table instance lock',
                'MM','Mount definition gloabal enqueue lock',
                'MR','Media recovery lock',
                'PF','Password file lock',
                'PI','Parallel operation lock',
                'PR','Process startup lock',
                'PS','Parallel operation lock',
                'RE','USE_ROW_ENQUEUE enforcement lock',
                'RT','Redo thread global enqueue lock',
                'RW','Row wait enqueue lock',
                'SC','System commit number instance lock',
                'SH','System commit number high water mark enqueue lock',
                'SM','SMON lock',
                'SN','Sequence number instance lock',
                'SQ','Sequence number enqueue lock',
                'SS','Sort segment lock',
                'ST','Space transaction enqueue lock',
                'SV','Sequence number value lock',
                'TA','Generic enqueue lock',
                'TD','DDL enqueue lock',
                'TE','Extend-segment enqueue lock',
                'TM','DML enqueue lock',
                'TO','Temporary Table Object Enqueue',
                'TT','Temporary table enqueue lock',
                'TX','Transaction enqueue lock',
                'UL','User supplied lock',
                'UN','User name lock',
                'US','Undo segment DDL lock',
                'WL','Being-written redo log instance lock',
                'WS','Write-atomic-log-switch global enqueue lock',
                'TS',decode(id2,0,'Temporary segment enqueue lock (ID2=0)',
                                'New block allocation enqueue lock (ID2=1)'),
                'LA','Library cache lock instance lock (A=namespace)',
                'LB','Library cache lock instance lock (B=namespace)',
                'LC','Library cache lock instance lock (C=namespace)',
                'LD','Library cache lock instance lock (D=namespace)',
                'LE','Library cache lock instance lock (E=namespace)',
                'LF','Library cache lock instance lock (F=namespace)',
                'LG','Library cache lock instance lock (G=namespace)',
                'LH','Library cache lock instance lock (H=namespace)',
                'LI','Library cache lock instance lock (I=namespace)',
                'LJ','Library cache lock instance lock (J=namespace)',
                'LK','Library cache lock instance lock (K=namespace)',
                'LL','Library cache lock instance lock (L=namespace)',
                'LM','Library cache lock instance lock (M=namespace)',
                'LN','Library cache lock instance lock (N=namespace)',
                'LO','Library cache lock instance lock (O=namespace)',
                'LP','Library cache lock instance lock (P=namespace)',
                'LS','Log start/log switch enqueue lock',
                'PA','Library cache pin instance lock (A=namespace)',
                'PB','Library cache pin instance lock (B=namespace)',
                'PC','Library cache pin instance lock (C=namespace)',
                'PD','Library cache pin instance lock (D=namespace)',
                'PE','Library cache pin instance lock (E=namespace)',
                'PF','Library cache pin instance lock (F=namespace)',
                'PG','Library cache pin instance lock (G=namespace)',
                'PH','Library cache pin instance lock (H=namespace)',
                'PI','Library cache pin instance lock (I=namespace)',
                'PJ','Library cache pin instance lock (J=namespace)',
                'PL','Library cache pin instance lock (K=namespace)',
                'PK','Library cache pin instance lock (L=namespace)',
                'PM','Library cache pin instance lock (M=namespace)',
                'PN','Library cache pin instance lock (N=namespace)',
                'PO','Library cache pin instance lock (O=namespace)',
                'PP','Library cache pin instance lock (P=namespace)',
                'PQ','Library cache pin instance lock (Q=namespace)',
                'PR','Library cache pin instance lock (R=namespace)',
                'PS','Library cache pin instance lock (S=namespace)',
                'PT','Library cache pin instance lock (T=namespace)',
                'PU','Library cache pin instance lock (U=namespace)',
                'PV','Library cache pin instance lock (V=namespace)',
                'PW','Library cache pin instance lock (W=namespace)',
                'PX','Library cache pin instance lock (X=namespace)',
                'PY','Library cache pin instance lock (Y=namespace)',
                'PZ','Library cache pin instance lock (Z=namespace)',
                'QA','Row cache instance lock (A=cache)',
                'QB','Row cache instance lock (B=cache)',
                'QC','Row cache instance lock (C=cache)',
                'QD','Row cache instance lock (D=cache)',
                'QE','Row cache instance lock (E=cache)',
                'QF','Row cache instance lock (F=cache)',
                'QG','Row cache instance lock (G=cache)',
                'QH','Row cache instance lock (H=cache)',
                'QI','Row cache instance lock (I=cache)',
                'QJ','Row cache instance lock (J=cache)',
                'QL','Row cache instance lock (K=cache)',
                'QK','Row cache instance lock (L=cache)',
                'QM','Row cache instance lock (M=cache)',
                'QN','Row cache instance lock (N=cache)',
                'QO','Row cache instance lock (O=cache)',
                'QP','Row cache instance lock (P=cache)',
                'QQ','Row cache instance lock (Q=cache)',
                'QR','Row cache instance lock (R=cache)',
                'QS','Row cache instance lock (S=cache)',
                'QT','Row cache instance lock (T=cache)',
                'QU','Row cache instance lock (U=cache)',
                'QV','Row cache instance lock (V=cache)',
                'QW','Row cache instance lock (W=cache)',
                'QX','Row cache instance lock (X=cache)',
                'QY','Row cache instance lock (Y=cache)',
                'QZ','Row cache instance lock (Z=cache)','????') TYPE
FROM V$LOCK
ORDER BY 1,4;You can also run your index creation with the ONLINE option.
HTH,
Yoann.

Enq: TX - row lock contention in forms 10g sequency number generation

Iam Getting the Deadlock issue in oracle formdeveloper 10g database is 11g Acutually in our small Hospital organization using different forms generating entrying labrequest form finally save time
one sequency number will generated i have give procedure below every save criteria form using below procedure some time iam getting lock iam using blocksession query i have find out some
OSUSER
MACHINE
TERMINAL
PROGRAM
SQL_ID
LOGON_TIME
BLOCKING_SESSION_STATUS
BLOCKING_SESSION
EVENT
user423
UMCCDOM\LEVEL4-MICU
LEVEL4-MICU
PrjMcr.EXE
0ccngw7dfkmgb
23/09/2013 11:34:41 AM
VALID
277
enq: TX - row lock contention
SYSTEM
WORKGROUP\PRIAPPSVR
PRIAPPSVR
frmweb.exe
0ccngw7dfkmgb
23/09/2013 11:32:50 AM
VALID
186
enq: TX - row lock contention
SYSTEM
WORKGROUP\PRIAPPSVR
PRIAPPSVR
frmweb.exe
0ccngw7dfkmgb
22/09/2013 2:49:47 PM
VALID
277
enq: TX - row lock contention
SYSTEM
WORKGROUP\PRIAPPSVR
PRIAPPSVR
frmweb.exe
0ccngw7dfkmgb
23/09/2013 7:00:22 AM
VALID
186
enq: TX - row lock contention
user290
UMCCDOM\LEVEL2-N
LEVEL2-N
PrjMcr.EXE
0ccngw7dfkmgb
23/09/2013 10:28:06 AM
VALID
277
enq: TX - row lock contention
lock are happen after open the code i have find out used FOR UPDATE in procedure please tell me any alternative for this every labrequest form saving time using this procedure for generating prefix sequence number multiple user using with different systems
PROCEDURE   Gsp_GenSeqNum (I_SvPrefixCd IN VARCHAR2,I_SvUserName IN VARCHAR2,
                          O_SvSeqNum OUT VARCHAR2) IS
--This Procedure generates the sequence number
--by retrieving the prefix based on the code
--supllied to the procedure.
CURSOR crSeqGenerator IS
         SELECT Gsn_prefix_last_num, Gsn_prefix_year
            FROM G_SEQUENCE_NUMBER
         WHERE Gsn_prefix_Cd = I_SvPrefixCd
               AND Gsn_prefix_year = TO_CHAR(SYSDATE,'YYYY')
FOR UPDATE OF Gsn_prefix_last_num;
udSeqNum        G_SEQUENCE_NUMBER.Gsn_Prefix_last_num%TYPE;
udNextSeqNum    G_SEQUENCE_NUMBER.Gsn_Prefix_last_num%TYPE;
udYear          G_SEQUENCE_NUMBER.Gsn_Prefix_year%TYPE;
udPrefix        G_SEQUENCE_PREFIX.Gsp_Prefix_Value%TYPE;
BEGIN
SELECT Gsp_Prefix_Value
INTO udPrefix
FROM G_SEQUENCE_PREFIX
WHERE Gsp_Prefix_Cd = I_SvPrefixCd;
OPEN crSeqGenerator;
FETCH crSeqGenerator
   INTO udSeqNum,
        udYear;
IF crSeqGenerator%FOUND THEN
     udNextSeqNum :=udSeqNum + 1;
     O_SvSeqNum     := udPrefix||'/'||TO_CHAR(SYSDATE,'YY')
                               ||'/'||LPAD(TO_CHAR(udNextSeqNum),6,'0');
ELSE
INSERT INTO G_SEQUENCE_NUMBER VALUES(I_SvPrefixCd,TO_CHAR(SYSDATE,'YYYY'),0,I_SvUserName,SYSDATE);
     udSeqNum      :=0;
     udNextSeqNum :=udSeqNum + 1;
     O_SvSeqNum:=UdPrefix||'/'||TO_CHAR(SYSDATE,'YY')
                         ||'/'||LPAD(TO_CHAR(udNextSeqNum),6,'0');
END IF;
UPDATE G_SEQUENCE_NUMBER
     SET Gsn_Prefix_last_num=udNextSeqNum
   WHERE Gsn_Prefix_Cd = I_SvPrefixCd
     AND Gsn_Prefix_year=TO_CHAR(SYSDATE,'YYYY');
CLOSE crSeqGenerator;
END Gsp_GenSeqNum;
Thanks
subbu

This application is inbuit with some modules VB (cath ,cardio)and oracle forms for required sequence number generation different time used this procedure whereever required the sequence Prefix generation.If i replace the procedure sequene to oracle standard sequency if the user cannot save the form unnessary sequency generated order is missing from sequence.

Locking Non Synced Audio To A Sequence

I have some old audio files ( mostly that came - using old drum machines) - that I want to sync to logic.
In digital performer 4.6 - I am able to highlight a multi bar drum track - then click " analyze audio" - and it makes an attempt to guess at the beats per minute. Then I can change the sequence to that BPM - then slide the audio drum track ( and all other related audio tracks) - and match up the drum downbeats to the beginning of a bar - and thereby lock non-synced audio to a sequence very easily.
Question: how do I do this in logic 7.11?

Beat mapping is probaly what you want
if you have an exact loop use adjust tempo using region length/locators

Lock a sequence?

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