RemoveRowWithKey cannot commit just on last row: attn Frank, Steve

Hello:
I use removeRowWithKey to delete rows in a detail table. When I commit, the delete is committed. However, if I delete the last row, I get errors. Do I have to reset iterator?

I have Steve's CheckBox implemented in the row (The one where he has customs SettingsViewRowImpl row class, and getStatusAsBoolean and setStatusAsBoolean methods to convert numeric to a boolean upon reading it and vice versa)
Anyway, the only reason I am giving you the above information is because of the error I am getting. I don't understand. I can add a row fine and I can delete a row (except the last one) fine.
javax.faces.el.PropertyNotFoundException: Error testing property 'CrAsBoolean' in bean of type null at com.sun.faces.el.PropertyResolverImpl.isReadOnly(PropertyResolverImpl.java:274) at oracle.adfinternal.view.faces.model.FacesPropertyResolver.isReadOnly(FacesPropertyResolver.java:124) at com.sun.faces.el.impl.ArraySuffix.isReadOnly(ArraySuffix.java:236) at com.sun.faces.el.impl.ComplexValue.isReadOnly(ComplexValue.java:209) at com.sun.faces.el.ValueBindingImpl.isReadOnly(ValueBindingImpl.java:266)

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Error: cannot commit (when inserting the row)

hai,
I create the trigger like below.
create or replace trigger proce
after insert on samp3
declare
ass date;
begin
select d into ass from samp3;
updatecourse(ass);
end;
when I try to insert the row then the error is come;
ERROR at line 1:
ORA-20001: An error was encountered - -4092 -ERROR- ORA-04092: cannot COMMIT in a trigger
ORA-06512: at "AUROLIVE.UPDATECOURSE", line 22
ORA-06512: at "AUROLIVE.PROCE", line 5
ORA-04088: error during execution of trigger 'AUROLIVE.PROCE'
can any one help me?
Regards,
Ramya.S

If u want to put commit on trigger use pragma
autonomous_transaction.what it does,it leave the main
transaction and commit the second transaction.Which can lead to logic problems and corruption of your business data if not used extremely carefully.
If you start transaction 1 and during that write some other data as transaction 2 using autonomous transactions and then subsequently find that there is an error or some reason not to commit transaction 1 then you cannot automatically roll back transaction 2 and would have to take care of it manually.
I see too many occurences of developers using autonomous transaction all over the place just because they want to get the data written to the database and then they're wondering why there is so much clutter in their data and the database integrity is poor from a business/logical point of view. The first thing any good design includes is a knowledge of the business transactions and when data should be committed and what the implications of using autonomous transactions are.

I can open my hotmail email but cannot reply or send new messages. this just started last week.

I can open my hotmail email but cannot reply or send new messages. this just started last week. Don't know why not. Is this a Firefox issue or a Microsoft issue? 'Cause it's near impossible to get Microsoft to get back to me. Hope you can help me.

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ORA-04092: cannot COMMIT in a trigger - Please advise on solution

Hi guys,
I know this error has been explained in the forum before and I understand where the error comes from, but I need expert's opinion to make the trigger works.
Here is the actual situation:
Table A has a trigger on after insert, and BASED ON THE LAST ROW inserted (only this data is subject to the trigger's actions) does the following:
1. MERGE the data (last row from the source table=A) with the data from the table destination=B. This data is specific to an employee;
2. Open a cursor that goes through all the ancestors of the employee (I have an employees hierarchy) and MERGE the same data (but for ancestors) with the table destination;
To be more specific :
EmpID LOB Day Status
12 1007 29 Solved
EmpID has ancestors 24 and 95. Therefore in the destination table I will have to do:
1. Merge data for EmpID 12;
2. Merge data for EmpID 24, 95:
EmpID LOB Day Status
24 1007 29 Just S (this is the status for ancestors)
95 1007 29 Just S
Steps 1 and 2 are inside a PL/SQL procedure that works fine by itself, but not within the trigger (since there are many transactions on the destination table). These 2 steps are required because for EmpID 12 I set a status and for the ancestors I set up a different status (this was the only way I could think of).
Can someone give me a hint how should I handle this situation ?
Thank you,
John

Try this
create or replace procedure SEQ
is
pragma AUTONOMOUS_TRANSACTION;
BEGIN
EXECUTE IMMEDIATE 'create sequence ' || V_PROD ||
' minvalue 1 maxvalue 999999 start with 1';
END;
CREATE OR REPLACE TRIGGER TRG_GEN_SEQUENCES
BEFORE INSERT on MASTER_TABLE
FOR EACH ROW
DECLARE
V_PROD VARCHAR2(5);
N_ID NUMBER := 0;
CT NUMBER := 0;
ERR_MSG VARCHAR2(2000);
BEGIN
-- Retrieve the ID e of the last inserted row which is 100 by default
-- set the default client_id value with nextvalue of sequence prod_IDS
IF :NEW.ID = 100 THEN
V_PROD := :NEW.PROD;
SELECT PROD_IDS.NEXTVAL INTO N_ID FROM DUAL;
:NEW.ID := N_ID;
END IF;
BEGIN
SELECT COUNT(*)
INTO CT
FROM USER_SEQUENCES US
WHERE UPPER(US.SEQUENCE_NAME) = UPPER(V_PROD);
IF CT = 0 THEN
-- create the sequence with name of V_PROD if doesn't exist
INSERT INTO CDR_SQL_ERR
(DB_OBJ, ERR_MSG, PROC_DATE)
VALUES
('TRG_GEN_SEQUENCES',
V_PROD || ' sequence will be created ', SYSDATE);
--EXECUTE IMMEDIATE 'create sequence ' || V_PROD ||
---' minvalue 1 maxvalue 999999 start with 1';
begin
SEQ;
end;
ELSE
INSERT INTO CDR_SQL_ERR
(DB_OBJ, ERR_MSG, PROC_DATE)
VALUES
('TRG_GEN_SEQUENCES',
V_PROD || ' sequence alreday exist',
SYSDATE);
END IF;
EXCEPTION
WHEN OTHERS THEN
ERR_MSG := TO_CHAR(SQLERRM) || ' ';
INSERT INTO SQL_ERR
(DB_OBJ, ERR_MSG, PROC_DATE)
VALUES
('TRG_GEN_SEQUENCES', ERR_MSG || SEQ_DDL, SYSDATE);
END;
EXCEPTION
WHEN OTHERS THEN
NULL;
ERR_MSG := TO_CHAR(SQLERRM) || ' ';
INSERT INTO SQL_ERR
(DB_OBJ, ERR_MSG, PROC_DATE)
VALUES
('TRG_GEN_SEQUENCES', ERR_MSG || SEQ_DDL, SYSDATE);
COMMIT;
END;

How to get the last row of a database table.

HI ,
I want to get record exactly from the last row of a database table.
How is that possible?

Hi,
To fetch last record from an internal table, just do find the number of records in it and read using index.
DESCRIBE TABLE ITAB LINES L_LINES.
READ TABLE ITAB INDEX L_LINES.
You can also use LOOP .. ENDLOOP but the above method is better (performance wise).
using LOOP .. ENDLOOP.
LOOP AT ITAB.
**do nothing
ENDLOOP.
**process ITAB (Header record of ITAB).
**after ENLOOP, ITAB will have the last record of the internal table.
[here ITAB is internal table as well as header record.]
But what is the requirement?
If you are looking for the current record of an employee then you can use ENDDA = HIGH_DATE.
My advice is to review your requirement again and try to fetch only that record which you need.
Mubeen

Hiding bloc of Lines in a web template in the last row

Hello,
I want to hide a bloc of lines in a web query.
Here I use the table interface with the method
characteristic cell according to the "How to" - paper
(How to hide a column).
Normally , there is no problem to set the tag
'' in the first column of the row, I want to display again.
But the problem is the last row. Here I must close the
tag in the last column of the last row. The effect is
something like a double line at the end of the output.
(I think, I see here another time the first column of
a row, because I cannot close the tag properly)
As a result, I have problems with the print manager, we use to enhance the web printing.
Can someone give me the information, how to close the tag
in a proper way at the last row.
Many thanks for your help.
Regards
Ralph

Hi,
I don't think this is possible. I would try to use c_cell_extend to extend the style of each <td>-Tag with style="visibility:hidden; display:none" This should have the same affect (for all cells which have to be hidden) (depending on your table styles there might be some padding or spacing effects; you have to try this out).
Heike

Trying to get the last row from a resultset

Hi,
I'm trying to do a query to postgreSQL and have it return the last updated value, (last row).
My prepared statement is returning the correct results, but i'm having a problem getting the latest value.
I'm using a comboBox to drive a textfield, to load the last entered values in depending on which item in the comboBox is selected.
I've tried a variety of things and most seem to return the first row, not showing the updated values.
Or, if it does work, it takes to long to load, and i get an error.
here is the working code;
Object m = machCBX.getSelectedItem():
try { PreparedStatment last = conn.prepareStatement("SELECT part, count FROM production WHERE machine = ?",
ResultSet.TYPE_SCROLL_INSENSITIVE, //tried both INSENSITIVE and SENSITIVE
ResultSet.CONCUR_READ_ONLY);
last.setString(1, String.valueOf(m));
rs. = last.executeQuery();
if(rs.isAfterLast) == false ) {
rs.afterLast();
while(rs.previous()) {
String p = rs.getString("part");
int c = rs.getInt("count");
partJTX.setText(p);
countJTX.setText(c);
}this grabs values, but they are not the last entered values.
Now if i try to use rs.last() it returns the value i'm looking for but takes to long, and i get:
Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space I also know using ra.last() isn't the best way to go.
I'm just wondering if there is another way other than getting into vectors and row count? or am i better off to go with the later?
thanks
-PD

OK, you've got a major misunderstanding...
The relational database model is built on the storage of sets - UNORDERED sets. In other words, when you hand a database a SELECT statement without an ORDER BY clause, the database is free to return the results in any order.
Now it so happens that most databases will happen to return data retrieved by an unordered SELECT, at least for a while, in the same order that it was inserted, especially if no UPDATE or DELETE activity has occured, and no database maintenance has occured. However, eventually most tables have some operation that creates a "space" in the underlying storage, or causes a row to expand and have to be moved or extended, or something. Then the database will start returning unordered results in a different order. If you (or other people) never ever ever UPDATE or DELETE a table, then on some databases the data might well come out in insertion order for a very very long time; given human nature and the way projects tend to work, relying on that is a sucker's bet, IMHO.
In other words, if you want the "most recent" something, you need to store a timestamp with your data. (With some databases, you might be able to take advantage of some non-standard feature to get "last updates" or "row change timestamps", but I know of no such for Postgres.
While this won't solve your major problem, above, your issue with rs.last is probably occuring because Postgres by default will prefetch your entire ResultSet. Use Statement.setFetchSize() to change that (PreparedStatement inherits the method, of course).

How can I delete the last row of a Matrix

Hi All,
Does anyone know whether deleting the last row of a matrix controlled by a UDO child table gives problems? I have the strange effect that I cannot delete the very last existing row in the matrix, i.e. after updating the delete the last to-be deleted row comes back into my matrix !!
I give you a snippet of my code (function getSelectedRow gives the selected row in the matrix):
==
if (evnt.ItemUID.Equals(ViewConstants.Items.DELETEBUTTON))
if (evnt.EventType == BoEventTypes.et_ITEM_PRESSED)
    if (evnt.BeforeAction)
      form = BusinessOne.Application.Forms.Item(formUID);
      mtx = (Matrix)form.Items.Item(ViewConstants.Items.MATRIX).Specific;
     int numRow = getSelectedRow(mtx);
     if (numRow != -1)
                                        mtx.DeleteRow(numRow);
                                        form.Mode = BoFormMode.fm_UPDATE_MODE;
                                   Item btn = (Item)form.Items.Item(ViewConstants.Items.ADDBUTTON);
                                   btn.Enabled = true;
==
Cheers,
Marcel Peek
Alpha One
Message was edited by: Marcel Peek
Message was edited by: Marcel Peek

Yes, there is a problem to delete the last row.
It is fixed in version 2005.

To find out the last row that is updated in a View Object

Hi OAF Gurus,
I have requirement like,
I have to find out the last row that is updated on a particular View Object and I have send a mail to the users about the change.
JegSAMassMobVOImpl vo = getJegSAMassMobVO1();
JegSAMassMobVO is the View Object Name and it displays certain rows that has already been added to the VO in the Page.
Now the issue is when a user updates a particular row,I have to find which row gets updated and have to send a email to that particular employee about the change.
Just want to know,how to find out the last updated row in a particular VO.
Any Help would be appreciated as this a immediate requirement.
Regards,
Magesh.M.K.
Edited by: user1393742 on May 4, 2011 1:06 AM

Hi Magesh
It shoud be a Advanced table ,so when user will update the row ,the specific row will fire the PPR and on that event u can capture the row using row reference ,this is the sample code below
public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
super.processFormRequest(pageContext, webBean); OAApplicationModule am =
(OAApplicationModule)pageContext.getApplicationModule(webBean);
String event = pageContext.getParameter("event");
if ("<ItemPPREventName>").equals(event))
// Get the identifier of the PPR event source row
String rowReference =
pageContext.getParameter(OAWebBeanConstants.EVENT_SOURCE_ROW_REFERENCE);
Serializable[] parameters = { rowReference };
// Pass the rowReference to a "handler" method in the application module.
262
am.invokeMethod("<handleSomeEvent>", parameters);
In your application module's "handler" method, add the following code to access the source row:
OARow row = (OARow)findRowByRef(rowReference);
if (row != null)
Thanks
Pratap

Java.sql.SQLException: You cannot commit during a managed transaction!

Hi all,
I'm just trying to get the tutorial Car EJP app to work with Jboss 3.2.1
When creating a new car record by calling the car.edit() method it reaches
the line
pm.makePersistent (car);
and then throws the exception
com.solarmetric.kodo.runtime.FatalDataStoreException:
com.solarmetric.kodo.runtime.FatalDataStoreException:
java.sql.SQLException: You cannot commit during a managed transaction!
[code=0;state=null]
When checking the jboss log, it is clear that kodo is trying to commit the
sequence update :
at
org.jboss.resource.adapter.jdbc.WrappedConnection.commit(WrappedConnection.java:477)
at
com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.commit(SQLExecutionManagerImpl.java:783)
at
com.solarmetric.kodo.impl.jdbc.schema.DBSequenceFactory.updateSequence(DBSequenceFactory.java:267)
at
com.solarmetric.kodo.impl.jdbc.schema.DBSequenceFactory.getNext(DBSequenceFactory.java:111)
at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.newDataStoreId(JDBCStoreManager.java:598)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistentFilter(PersistenceManagerImpl.java:1418)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistent(PersistenceManagerImpl.java:1348)
at com.titan.kodojdotest.ejb.CarBean.edit(CarBean.java:51)
How should i get this to work ????
tx for your help,
Roger.

It appears that you are using ConnectionFactoryName. First be sure to
set a ConnectionFactory2Name which will be a non-transactional (in terms
of global transaction) DataSource for sequence generation for which you
are seeing here. There are also some issues with JBoss's connection
pooling on certain dbs if you are still seeing the problem after this.
If so, try setting ConnectionURL, ConnectionPassword, etc explicitly
Roger Laenen wrote:
Hi all,
I'm just trying to get the tutorial Car EJP app to work with Jboss 3.2.1
When creating a new car record by calling the car.edit() method it reaches
the line
pm.makePersistent (car);
and then throws the exception
com.solarmetric.kodo.runtime.FatalDataStoreException:
com.solarmetric.kodo.runtime.FatalDataStoreException:
java.sql.SQLException: You cannot commit during a managed transaction!
[code=0;state=null]
When checking the jboss log, it is clear that kodo is trying to commit the
sequence update :
at
org.jboss.resource.adapter.jdbc.WrappedConnection.commit(WrappedConnection.java:477)
at
com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.commit(SQLExecutionManagerImpl.java:783)
at
com.solarmetric.kodo.impl.jdbc.schema.DBSequenceFactory.updateSequence(DBSequenceFactory.java:267)
at
com.solarmetric.kodo.impl.jdbc.schema.DBSequenceFactory.getNext(DBSequenceFactory.java:111)
at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.newDataStoreId(JDBCStoreManager.java:598)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistentFilter(PersistenceManagerImpl.java:1418)
at
com.solarmetric.kodo.runtime.PersistenceManagerImpl.makePersistent(PersistenceManagerImpl.java:1348)
at com.titan.kodojdotest.ejb.CarBean.edit(CarBean.java:51)
How should i get this to work ????
tx for your help,
Roger.
Steve Kim
[email protected]
SolarMetric Inc.
http://www.solarmetric.com

Using firefox 4.0.1, IBM SVC console internal server, rows with I think form data, the last row is corrupted and overlays a prior row.

IBM SVC console uses websphere. Screen data that is presented in table form last row appears to overwrite the prior row only. In other similar layouts, the last row is cut in half and cannot be seen. The prior version of Firefox 3 (something) did not have this problem. OS Windows XP Pro SP3
Firefox V3.6.17 worked fine

Seeing the same problem using the HMC with FF7 beta.

Cannot commit during managed transaction - MDB

Hi
I use message-driven bean to asynchronously send newsletters. To avoid restarting process from the beginning in case of any error, I save the recipients in database table, and remove row by row after email has been sent. To not mark my mail server as spammer I send it in chunks of 90 per minute. My recipients list is quite big, about 30k addresses. The code works perfect, but only few minutes... Then transaction is timed out, deleting of already sent recipients is not commited and the process begins again! That of course results in delivering the same message multiple times to the same recipients.
I tried setting autocommit to false and forcing commit before thread going sleep, but I kept getting error "cannot commit managed transaction".
Can anybody help?
Michal
            int sentCount = 0;
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            PreparedStatement stmt = con.prepareStatement("SELECT * " +
                    "FROM mail_recipient " +
                    "WHERE task_id = ? " +
                    "ORDER BY id ASC " +
                    "LIMIT " + CHUNK_SIZE + " ");
            stmt.setInt(1, Integer.parseInt(id));
            ResultSet rs = stmt.executeQuery();
            StringBuffer sentIds = new StringBuffer();
            while(rs.next()) {
                if(!checkInProgressStatus(file))
                    return;
                email = rs.getString("email");
                String from_address = getMailProperty(account, "mail");
                String display_name = getMailProperty(account, "display_name");
                InternetAddress inetAddr = new InternetAddress(from_address,
                        display_name);
                Mail mail = new Mail(inetAddr,
                        getMailProperty(account, "username"),
                        getMailProperty(account, "password"));
                try {
                    mail.sendEmail(email, subject, content);
                } catch (MessagingException ex) {
                    log.error("Cannot send to: " + email + " - user " + rs.getInt("customer_id"));
                sentIds.append(rs.getInt("id") + ",");
                if(++sentCount % CHUNK_SIZE == 0) {
                    try {
                        try {
                            rs.close();
                            stmt.close();
                            con.close();
                        } catch (SQLException ex) {
                        Connection con2 = null;
                        con2 = locator.getPGDataSource().getConnection();
                        PreparedStatement stmt2 =
                                con2.prepareStatement("DELETE FROM mail_recipient " +
                                "WHERE id IN(" +
                                sentIds.substring(0, sentIds.length()-1) + ")");
                        stmt2.executeUpdate();
                        sentIds = new StringBuffer();
                        stmt2 = con2.prepareStatement("SELECT COUNT(*) " +
                                "FROM mail_recipient " +
                                "WHERE task_id = ?");
                        stmt2.setInt(1, Integer.parseInt(id));
                        ResultSet rs2 = stmt2.executeQuery();
                        rs2.next();
                        int count = rs2.getInt(1);
                        log.error(count + "");
                        taskNode.setAttribute("recipients_left", count + "");
                        saveXML(doc, file);
                        try {
                            rs2.close();
                            stmt2.close();
                            con2.close();
                        } catch (SQLException ex) {
                        Thread.sleep(60*1000);
                    } catch (InterruptedException ex) {
                    con = locator.getPGDataSource().getConnection();
                    stmt = con.prepareStatement("SELECT * " +
                            "FROM mail_recipient " +
                            "WHERE task_id = ? " +
                            "ORDER BY id ASC " +
                            "LIMIT " + CHUNK_SIZE + " ");
                    stmt.setInt(1, Integer.parseInt(id));
                    rs = stmt.executeQuery();
            }

Using Kodo's connection pooling fixed the problem.
Thanks for the help.
Chris West wrote:
I suspect JBoss connection pooling could be the problem. A couple of
questions...
1. Do you know which versions of JBoss have this problem.
2. How do I configure Kodo to use it's own connection pool on JBoss?
-Chris West
Stephen Kim wrote:
I would highly suggest using Kodo's connection pool first and see if
that alleviates the problem. I recall JBoss having some connection pool
issues in certain versions.
Steve Kim
[email protected]
SolarMetric Inc.
http://www.solarmetric.com

Delete last row in a table - why won't it delete?

I cannot delete the last row in any of my tables. (InDesign CS2). The option is greyed out - is this by design or a bug and how can I delete it?
Thanks.

No,
The table has two header rows and no footers. The row I cannot delete is the third row which must therefore be a body row.

Import the last row written in a database

Hello!
I want know what i have to do to import the last row written in a table from a MySQL database.
I'm using labview database toolkit.
Thank you in advanced.
Larson

Hi Larson
I total agree that my first suggestion isn't what you want but I wanted to put the idea across that you can retrieve records from table in the order they were written using a simple SQL command.
When dealing with databases I always design my queries using Design View in MS Access. Once you have the query designed you can then convert the query you have just designed in Design View to SQL by changing to SQL View.
So this example SQL statement would return the MAX Timestamp.
SELECT Max(tblTimeStampTest.Timestamp) AS MaxOfTimestamp
FROM tblTimeStampTest;
Say the timestamp was 12/14/2005 8:18:33
SELECT tblTimeStampTest.*
FROM tblTimeStampTest
WHERE (((tblTimeStampTest.Timestamp)=#12/14/2005 8:18:33#));
This will return your last record as long at the timestamps are unique and records are written in timestamp order. You can then use Build Text Express VI or Format into String to build your SQL strings that have variables like the timestamp above.
I have no experience with mySQL but I would assume MS Access could interface to it somehow either through ODBC or MS Access Projects so that can build you SQL commands.
David

Delete last row in database?

How do I delete last row in mysql database? I tried like this without luck:
     public void minus()
     int tal=0;
     try{
     ResultSet row = db.select("select * from midlertidigregning order by id asc");
     row.last();
     tal = row.getInt("nr");
     }catch( SQLException t ){}
          db.insert("delete from midlertidigregning where nr = '"+tal+"' limit 1");
     }

What didn't work? Did something fail, or did the row not get deleted as expected? Did you issue a commit after the delete?

RemoveRowWithKey cannot commit just on last row: attn Frank, Steve

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