Form 4.5 table lock problem

Hi,
I have a forms 4.5 form. It has 2 block say master_test , detail_test on two tables(master-detail).
when user presses a button which call a stored procedure insert_rec.
Insert_rec procedure inserts a record in master_test and detail_test but do not commit in the stored procedure.
The inserted record is display in the form master/detail block and I can save it.
All works fine except that the tables are getting locked. I mean if I want to open another instant of the same form I get "could not resolve or some error."
I add commit in my insert_rec stored procedure then no locking issue.
any suggestions?

Is there anything that I can do to prevent it?

Similar Messages

Forms 6i : Ole Container : Locking problem

We have a form in which user can attach all sorts of documents that are then saved in the database.
Once in a while we have a locking problem; when 2 users try to open the same document, the second one first gets a 'Could not reserve record (2 tries). Keep trying?'. When clicking 'No', the next error message is 'Frm-40501 : unable to reserve record for update or delete', and the form cannot be used anymore. He keeps complaining about the reserved record.
I've been looking into this problem but cannot seem to find a lot of help.
Does anyone have an idea how to solve this locking problem?
I have tried the following things:
* setting the block to locking mode 'Delayed' => we ended up having duplicate records.
* Changing properties of the ole-container (In Place Activation, Inside Out support, ...).
Forms version is 6.0.8.13.0, database 8.0.6.0.0.
Any help is appreciated.

that seems to be a normal locking problem. Do you have tried to work with an ON-LOCK trigger ? (e.g. first to see, when locking will occur, second for implementing an own locking-behaviour, maybe with a SELECT for UPDATE)
Or do you think, that there is something special with your OLE-programming ?
Gerd

Table row lock problem

Dear Oracle Tech.
As end user of Oracle Database, we seek advise from Oracle on the following issue :
Our business application is an OLTP system and currently we have an adhoc batch process that needs to be executed. This batch process mirrors a normal online user process in the way some tables are updated on the database. Our concern arises when our customer requested to run the batch process during normal office hours which actually is not the norm. We would like to have your opinion on running batch update process during normal office hours, are there issues of lock contention and risk of deadlock? We understand Oracle databases have lock mechanisms built into it but is there a risk of the deadlock situation arising if we do execute the batch process during normal office hours? And if deadlock does occurs, how easy is it to detect and resolve the deadlock and return the application to normal operation?
Our database is Oracle 7.3.4 running on Solaris 2.6 over a network, our online application is built with PowerBuilder 7 and running on Windows95 clients.
Thank You.

Hi,
fortunately Oracle tries by default to minimize all locking issues on its objects, only those rows are locked(until a commit or rollback occurs),which are modified by transactions, table locking will normally not happen. This is very appropriate and works well for OLTP applications. But, indeed, concurrent batch operations with bulk data loading could produce problems. In general, because of their resource consumption and also because of growing locking issues. Consider this example:
You have (in your batch procedure) an update statement, which updates a complete table.
UPDATE big_table SET field1 = anything;
no WHERE clause reduces the affected rows.
When this update has been started, all affected rows are locked, this may be many and the transaction will last for a long time, no other user can update (or delete) any of these rows. This issue is not resolved, until a commit or rollback occurs.
Deadlocks are relatively rare and are selfdetected and resolved by oracle (the blocking transaction will be rollbacked). You will find an entry in the alert log and a trace file is produced.
I'm not familiar with PowerBuilder, but I know sometimes Oracle's default locking methods are overwritten by third party software.
Regards
Werner

Cancel button on form of type form on a table or view

I am a newbie for apex. I am using 10g. I have created form on table emp(empno , name , salary ) . Form is of type Form on a Table or View.
Cancel & Save(Apply changes) button are not working at all. so I copied process reset page and execute on condition save button click. But still cancel button is not working. applcation has some other forms of type Form with a Report and are working properly. I have wasted 2 days on this problem.

Hi,
You can do that. If you have the branch to in the same form what you have to do use clear cache for that page. Click on the edit page, click on the cancel button in the left button section. scroll down to bottom and type the page 32 in the Clear cache field. However it is better to have branch to the report page (different page from the form).
Hope this will help.
M Tajuddin
http://tajuddin.whitepagesbd.com

Multiple parallel loads into one table with TABLE LOCK option

Hi everyone:
We have several SSIS packages where each package has the basic design of having one sequence container. Inside each sequence container can be anywhere from 2 - 9 data flow tasks where for each data is selected from a different table but all 2-9 tasks do
an OLEDB fast load (with table lock option checked) into the same single destination table.
The number of rows were pulling from the various sources might be anywhere from 5 up to 100,000.
Right now this doesn't seem to be causing any issues, but I wanted to check to see if this set up (since we're doing a review) could potentially cause problems down the road?
We seem to think that each parallel task will acquire its data as normal, and just won't be able to insert until one of the other parallel tasks completes its fast load. To us, that's no big deal as we're at least able to acquire the data in parallel.
What are everyone's thoughts?
Thanks!

>>>We seem to think that each parallel task will acquire its data as normal, and just won't be able to insert
until one >>>of the other parallel tasks completes its fast load.
That is correct observation.
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
MS SQL Consulting:
Large scale of database and data cleansing
Remote DBA Services:
Improves MS SQL Database Performance
SQL Server Integration Services:
Business Intelligence

How to include the search criteria in "Form on a Table with Report" form.

Hi,
I am struggling hard to get to this point can any body help me...
I had created a page type form and in that I selected Form on a Table with Report..so the hirerachy is Form >> Form on a Table with Report. In that I managed to give one column of data hyperlink so that once we click on that column data it will takes to next form to display all other information.
But, the problem is there is not serach criteria available on this type of page.Could any body give me a solution how to get on to this.
Cheers,
krishna.

Hi,
Could, some body please answer to my question I raised above.
Cheers,
Krishna.

How to insert data from APEX form into two tables

Hi,
I'm running APEX 4.1 with Oracle XE 11g, having two tables CERTIFICATES and USER_FILES. Some of the (useless) fields are cut to reduce information:
CREATE TABLE CERTIFICATES
CERT_ID NUMBER NOT NULL ,
CERT_OWNER NUMBER NOT NULL ,
CERT_VENDOR NUMBER NOT NULL ,
CERT_NAME VARCHAR2 (128) ,
CERT_FILE NUMBER NOT NULL ,
) TABLESPACE CP_DATA
LOGGING;
ALTER TABLE CERTIFICATES
ADD CONSTRAINT CERTIFICATES_PK PRIMARY KEY ( CERT_ID ) ;
CREATE TABLE USER_FILES
FILE_ID NUMBER NOT NULL ,
FILENAME VARCHAR2 (128) ,
BLOB_CONTENT BLOB ,
MIMETYPE VARCHAR2 (32) ,
LAST_UPDATE_DATE DATE
) TABLESPACE CP_FILES
LOGGING
LOB ( BLOB_CONTENT ) STORE AS SECUREFILE
TABLESPACE CP_FILES
STORAGE (
PCTINCREASE 0
MINEXTENTS 1
MAXEXTENTS UNLIMITED
FREELISTS 1
BUFFER_POOL DEFAULT
RETENTION
ENABLE STORAGE IN ROW
NOCACHE
ALTER TABLE USER_FILES
ADD CONSTRAINT CERT_FILES_PK PRIMARY KEY ( FILE_ID ) ;
ALTER TABLE CERTIFICATES
ADD CONSTRAINT CERTIFICATES_USER_FILES_FK FOREIGN KEY
CERT_FILE
REFERENCES USER_FILES
FILE_ID
NOT DEFERRABLE
What I'm trying to do is to allow users to fill out all the certificate data and upload a file in an APEX form. Once submitted the file should be uploaded in the USER_FILES table and all the fields along with CERT_ID, which is the foreign key pointing to the file in the USER_FILES table to be populated to the CERTIFICATES table. APEX wizard forms are based on one table and I'm unable to build form on both tables.
That's why I've created a view (V_CERT_FILES) on both tables and using INSTEAD OF trigger to insert/update both tables. I've done this before and updating this kind of views works perfect. Here is where the problem comes, if I'm updating the view all the data is updated correctly, but if I'm inserting into the view all the fields are populated at CERTIFICATES table, but for USER_FILES only the fields FILE_ID and LAST_UPDATE_DATE are populated. The rest three regarding the LOB are missing: BLOB_CONTENT, FILENAME, MIMETYPE. There are no errors when running this from APEX, but If I try to insert into the view from SQLDeveloper, I got this error:
ORA-22816: unsupported feature with RETURNING clause
ORA-06512: at line 1
As far as I know RETURNING clause in not supported in INSTEAD of triggers, although I didn't have any RETURNING clauses in my trigger (body is below).
Now the interesting stuff, after long tracing I found why this is happening:
First, insert is executed and the BLOB along with all its properties are uploaded to wwv_flow_file_objects$.
Then the following insert is executed to populate all the fields except the BLOB and it's properties, rowid is RETURNED, but as we know RETURNING clause is not supported in INSTEAD OF triggers, that's why I got error:
PARSE ERROR #1918608720:len=266 dep=3 uid=48 oct=2 lid=48 tim=1324569863593494 err=22816
INSERT INTO "SVE". "V_CERT_FILES" ( "CERT_ID", "CERT_OWNER", "CERT_VENDOR", "CERT_NAME", "BLOB_CONTENT") VALUES (:B1 ,:B2 ,:B3 ,:B4, ,EMPTY_BLOB()) RETURNING ROWID INTO :O0
CLOSE #1918608720:c=0,e=11,dep=3,type=0,tim=1324569863593909
EXEC #1820672032:c=3000,e=3168,p=0,cr=2,cu=4,mis=0,r=0,dep=2,og=1,plh=0,tim=1324569863593969
ERROR #43:err=22816 tim=1324569863593993
CLOSE #1820672032:c=0,e=43,dep=2,type=1,tim=1324569863594167
Next my trigger gets in action, sequences are generated, CERTIFICATES table is populated and then USER_FILES, but only the FILE_ID and LAST_UPDATE_DATE.
Finally update is fired against my view (V_CERT_FILES), reading data from wwv_flow_files it populates BLOB_CONTENT, MIMETYPE and FILENAME fields at the specific rowid in V_CERT_FILES, the one returned from the insert at the beginning. Last, file is deleted from wwv_flow_files.
I'm using sequences for the primary keys, this is only the body of the INSTEAD OF trigger:
select user_files_seq.nextval into l_file_id from dual;
select certificates_seq.nextval into l_cert_id from dual;
insert into user_files (file_id, filename, blob_content, mimetype, last_update_date) values (l_file_id, :n.filename, :n.blob_content, :n.mimetype, sysdate);
insert into certificates (cert_id, cert_owner, cert_vendor, cert_name, cert_file) values (l_cert_id, :n.cert_owner, :n.cert_vendor, :n.cert_name, l_file_id);
I'm surprised that I wasn't able to find a valuable source of information regarding this problem, only MOS note about running SQLoader against view with CLOB column and INSTEAD OF trigger. The solution would be to ran it against base table, MOS ID 795956.1.
Maybe I'm missing something and that's why I decided to share my problem here. So my question is how do you create this kind of architecture, insert into two tables with a relation between them in APEX ? I read a lot in the Internet, some advices were for creating custom form with APEX API, create a custom ARP, create two ARP or create a PL/SQL procedure for handing the DML?
Thanks in advance.
Regards,
Sve

Thank you however I was wondering if there was an example available which uses EJB and persistence.

How to build a form with multiple tables in oracle application express

Hi everyone,
I have got problem in building a form with multiple tables.I have a main table with (20) columns and this main table is related to the other tables with the primary key-foreign key relation ship.My requirement is i have to build a form which has fields from many tables and all the fields are related to the main table using (ID) column.In that form if i enter ID field i have to get information from differnt tables.
Please help me to solve this (building a form with mutiple tables)
Thank you
sans

Sans,
I am no Apex expert, but with a situation as "complex" as yours, have you thought about creating a VIEW that joins these 7/8 tables, placing an INSTEAD OF trigger on that view to do all the business logic in the database, and base your application on the view?
This is the "thick-database" approach that has been gaining momentum of late. The idea is to put your business logic in the database wherever possible, and let the application (Form, Apex, J2EE, whatever) concentrate on UI issues,

Lock Problem while Broadcasting multiple reports using process chains

Hi All,
I am trying to broadcast 10 reports using the process chains using the program for RSRD_START and variants created in the Broadcaster..the Program jobs start fine.But I am facing the error that the RSRA_CA_LOG table is getting locked while trying to broadcast the Reports..Can any help me on how to run the jobs without the locking problem..Suggestions please.
Thanks,
Mike.

Hi,
Thanks for the Inputs and the SAP Notes.
I am trying to broadcast the Reports from the the Bex Analyer and getting this ock error and not the workbooks.
I am also trying to Broadcast the Workbooks also, but could not find the options to Broadcast them. we are in SAP -BW3.5 SP 12, Is it possible to broadcast the workbooks in this Patch level..or do we need to upgrade to achieve this.If so...can any one provide me the proceedure to Broadcast the Workbooks.
Thanks,
Mike.

Truncate table lock issue

Hi,
    In my SQL2000 stored procedure, there are 9 truncate table commands.
     But the the stored procedure is take above 15 minutes to execute.
     In this stored procedure, truncate table command has no problem.
     But an insert query into that table is very slow.
     In the insert query, select some views output and insert into the table. But these select output is very slow.
   I search some forums. They said that lock problem for the object. Query execution delayed for a exclusively accessed object.
How can I remove the lock for my strored procedure running faster ?

Here are the bad news: you need to have some understanding of indexing to get some results out of it. But since we don't know anything about your queries, we cannot really give much better advice. What we can say is that TRUNACTE TABLE has nothing to
do with it. Probably not locking either. Locking would come from concurrent activity in the database. Is there any?
Normally, we ask people to submit the code they have problem with. In this case we would also need see the view definitions. (Else we would still be in the dark.) And if the views are built on views, we need to see these as well. This may result in more
code that is practic to handle here, but I leave that up to you. As a hint: in the next step we are much likely to ask for the table and index definitions.
Erland Sommarskog, SQL Server MVP, [email protected]

Form on a table with report

HI all
I have a page type : form on a table with report .
the table is :
CREATE TABLE "SLIKA_USERS"
   (     "ID" NUMBER,
     "USER_NAME" VARCHAR2(20) NOT NULL ENABLE,
     "USER_PASSWD" VARCHAR2(4000),
     "COMPANY" NUMBER(10,0),
     "FORM_TYPE" NUMBER(2,0),
     "USER_NAME_DB" VARCHAR2(20),
     "USER_LOCK" NUMBER(1,0),
     "DATE_PASSWD_CHNG" DATE,
     "LOGIN_DIR" VARCHAR2(30),
      CONSTRAINT "SLIKA_USERS_PK" PRIMARY KEY ("ID") ENABLE,
      CONSTRAINT "USER_NAME_UNQ" UNIQUE ("USER_NAME") ENABLEthe table contain 500 rows.
in addition , when new user entered there are few processes that give him the USER_NAME_DB automatically by executing a functions etc.
in a few weeks , new table need to be active instead SLIKA_USERS table
the new table will look like this :
CREATE TABLE "SLIKA_USERS_NEW"
   (     "ID" NUMBER CONSTRAINT "ID_NN" NOT NULL ENABLE,
     "USER_NAME" VARCHAR2(20),
     "USER_PASSWD" VARCHAR2(4000),
     "COMPANY" NUMBER(10,0) CONSTRAINT "COMP_NN" NOT NULL ENABLE,
     "FORM_TYPE" NUMBER(2,0),
     "USER_NAME_DB" VARCHAR2(20),
     "USER_LOCK" NUMBER(1,0),
     "DATE_OPENED" DATE,
     "DATE_PASSWD_CHNG" DATE,
     "LOGIN_DIR" VARCHAR2(30),
     "USER_ID_NUM" NUMBER(9,0) CONSTRAINT "USER_ID_NUM_NN" NOT NULL ENABLE,
     "USER_F_NAME" VARCHAR2(10) CONSTRAINT "USER_F_NAME_NN" NOT NULL ENABLE,
     "USER_L_NAME" VARCHAR2(15) CONSTRAINT "USER_L_NAME_NN" NOT NULL ENABLE,
     "USER_MNG_NAME" VARCHAR2(30) CONSTRAINT "USER_MNG_NAME_NN" NOT NULL ENABLE,
     "LAST_LOGIN_DATE" DATE,
     "DATE_CLOSED" DATE,
      CONSTRAINT "USER_NAME_PK" PRIMARY KEY ("USER_NAME") ENABLE,
      CONSTRAINT "ID_UNQ" UNIQUE ("ID") ENABLE,
      CONSTRAINT "USER_ID_NUM_UNQ" UNIQUE ("USER_ID_NUM") ENABLE,
      CONSTRAINT "USER_NAME_DB_UNQ" UNIQUE ("USER_NAME_DB") ENABLEproblem :
before inserting new user to table SLIKA_USERS_NEW i need to check if the user_name alreay exists in SLIKA_USERS table .
i need to take all his details and move them to the new table , in addition as you can see , i need to complete some details like the USER_ID_NUM,USER_F_NAME,USER_L_NAME.
of curse if this user doesn't exist in the slika_users i need to create him as new user.
i thought about trigger , unfortunately it won't be a good idea since i don't have in table slika_users
the USER_ID_NUM" ,     "USER_F_NAME" , "USER_L_NAME"
another problem is : even if i will manage to overcome the problem of moving data from table slika_users .
to slika_users_new ,
to manage it after the tables will switch won't be easy though.
in a few weeks , the slika_users need to rename to slika_users_old .
and slika_users_new will rename to slika_users,
that is a necessary step because lots of pages in the application , relate to the table slika_users ,
in addition if new user need to create i still need to look if it's exists in the SLIKA_USERS_OLD (after i'll switch between the tables )
please give idea how to overcome those problems
Thanks In Advanced
Naama

Hello,
Basically it can be done, but you'll need to do it manually. You can create your basic report, and define two link columns, each to the proper form, which will include the desired columns.
The problem I see in this kind of solution is a great risk for data integrity, especially in a multi-user environment. It will take time to update both forms, and in between, the table record will contains inconsistent data – the first columns can contains data updated by the first form, but the rest of the columns will still contains an old data.
Regards,
Arie.

Question On Table Locks

Hello,
I have a question on locks.
USER A runs a batch job of insert statements have 100000 records and does a commit after every 1000 records.
USER B is also running a batch job on similar tables and is blocked due to locks held by USER A
I have identified that USER A is blocking USER B and now i need USER B to continue with the batch job. My question is that i need to kill the USER A's session without making him lose all the data he already inserted. In short as SYS can i commit his inserted transactions on his behalf.
I assume if I kill his session he will lose all the INSERTS he performed since he hasnt commited until that point.
Please Help.

is there any way i could save the INSERTED transcations of USER A.No. User A commits or User A is killed and rolls back.
i'm also confused about this type of lock i seeIf you supply details of what the sessions are waiting on / locks held, then this will clarify.
do u suggest i commit every 500 records No. In general, you should commit at the end of a transaction - all or nothing. Committing every X is nasty.
a lot of refrential constariants with other tables and this could be causing the lockYou can get locking problems with unindexed foreign keys.
If you could provide more details of what's going on in both sessions / what they're waiting on this should clarify.

Verticle Aligning a Form Within a Table

I got a form code for our hotel reservations from the
company, I'm trying to vertically align it in the middle of a
table. I have no problem aligning it center horizontally. I only
know minimal html and would greatly appreciate anyone who can help!
I've attached the code to look at.

What 'vertical alignment' are you hoping to achieve?
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
==================
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
==================
"nowherecreative" <[email protected]> wrote
in message
news:[email protected]...
>I got a form code for our hotel reservations from the
company, I'm trying
>to
> vertically align it in the middle of a table. I have no
problem aligning
> it
> center horizontally. I only know minimal html and would
greatly appreciate
> anyone who can help! I've attached the code to look at.
>
> <body>
> <table width="800" cellspacing="0"
cellpadding="0">
> <tr>
> <td height="40" align="center" valign="middle"
bgcolor="#99CCFF">
> <form
action="https://reservations.ihotelier.com/istay.cfm"
method="get">
> <input type="hidden" name="HotelID" value="####"
/>
> <input type="hidden" name="LanguageID" value="#"
/>
> <input type="hidden" name="Rooms" value="1" />
> <font color="#FFFFFF" size="2" face="Palatino
Linotype">Check-In
> Date:</font>
> <input name="DateIn" type="text" size="8" />
> <font color="#FFFFFF" size="2" face="Palatino
> Linotype">Nights:</font>
> <select name="Length">
> <option value="1"
selected="selected">1</option>
> <option value="2">2</option>
> <option value="3">3</option>
> <option value="4">4</option>
> <option value="5">5</option>
> <option value="6">6</option>
> <option value="7">7</option>
> <option value="8">8</option>
> <option value="9">9</option>
> <option value="10">10</option>
> </select>
> <font color="#FFFFFF" size="2" face="Palatino
> Linotype">Adults:</font>
> <select name="Adults">
> <option value="1"
selected="selected">1</option>
> <option value="2">2</option>
> <option value="3">3</option>
> <option value="4">4</option>
> </select>
> <font color="#FFFFFF" size="2" face="Palatino
Linotype">
> Children:</font>
> <select name="Children">
> <option value="0"
selected="selected">0</option>
> <option value="1">1</option>
> <option value="2">2</option>
> <option value="3">3</option>
> <option value="4">4</option>
> </select>
> <input name="submit" type="submit" value="Submit"
/>
> </form></td>
> </tr>
> </table>
> </body>
>

Table locking in MS SQL Server

Hi
Can anyone help with a locking problem I have. I have a jsp accessing an MS SQL 7 table. The data access has exception handling and the connection and resultset are closed within the finally block, however the table accessed sometimes gets locked preventing any updates to the records. I am using web logics jdbc driver.
Any help would be appreciated.
Dave

A quite wide issue.
Firstly, if you don't do locks, you may experince the locks other connections (by other programs) have caused.
If you do your connection with setTarnsactionIsolation( Connection.READ_UNCOMMITTED ), then you should not be influenced by other's locks. But this level is not to be recommended.
The default is Connection.READ_COMMITTED. In this level - and the higher levels as well - you are prevented from even reading a value which another connection has written, but not yet committed.
Much more locking influences, if you want to do an update.
Now, from the transaction logic only that row that is touched would have to be locked. But SQLServer has a kind of "self-deciding" locking behaviour. It starts with row locks, but if certain internal DBMS resources come low, it switches to using page locks and finally even table locks.
MS claims this as an advantage, my impression. If it is, decide on your own.
This is all described quite largely in the SQLServer docs.
We had some large discussions on this here, too. Search for "+lock +sqlserver" to find them.

Killing table locks

Hi all,
Good day..
DB version is 10.2.0.4 I need to write a script which has to kill any table locks in the DB which is more than 10 minutes.
thanks,
baskar.l

hi sb,
DECLARE
CURSOR c IS
SELECT c.owner,
      c.object_name,
      c.object_type,
      b.SID,
      b.serial#,
      b.status,
      b.osuser,
      b.machine
FROM v$locked_object a, v$session b, dba_objects c
WHERE b.SID = a.session_id AND a.object_id = c.object_id
and c.object_name in (MES.JSW_CRM_C_HR_COIL_INFO,MES.JSW_CRM_C_HR_COIL_INFO);
c_row c%ROWTYPE;
1_sql VARCHAR2(100);
BEGIN
OPEN C;
LOOP
FETCH c INTO c_row;
EXIT WHEN c%NOTFOUND;
l_sql := 'alter system kill session '''||c_row.sessionid||','||c_row.serialid||'''';
EXECUTE IMMEDIATE l_sql;
END LOOP;
CLOSE c;
END;But when executing it i get
1_sql VARCHAR2(100);
ERROR at line 15:
ORA-06550: line 15, column 1:
PLS-00103: Encountered the symbol "1" when expecting one of the following:
begin function package pragma procedure subtype type use
<an identifier> <a double-quoted delimited-identifier> form
current cursorthanks,
baskar.l

Form 4.5 table lock problem

Similar Messages

Maybe you are looking for