Handling "NOT NULL" in forms(4.5)

Hi everbody,
I am working in forms4.5,oracle 7.3 in winNT. I had some columns
which were defined as NOT NULLs in the database. When I tried
loading data into them I got an error.I found that there were no
values for those columns in the datafile. So removed the NOT
NULLs from the columns and loaded the data. These were the old
datas. Now I should change the columns back to NOT NULLs as the
new datas has to follow them. How will I handle the old datas in
the form? I want the NOT NULL columns to be diplayed as blanks
instead of showing some error.i.e when a primary key value is
entered (if it is already present in the old data) then a blank
should be displayed in those not null columns. How will I do
this?
Any help is appreciated.
Thanks in advance,
satish
null

satish (guest) wrote:
: Hi everbody,
: I am working in forms4.5,oracle 7.3 in winNT. I had some
columns
: which were defined as NOT NULLs in the database. When I tried
: loading data into them I got an error.I found that there were
no
: values for those columns in the datafile. So removed the NOT
: NULLs from the columns and loaded the data. These were the old
: datas. Now I should change the columns back to NOT NULLs as the
: new datas has to follow them. How will I handle the old datas
in
: the form? I want the NOT NULL columns to be diplayed as blanks
: instead of showing some error.i.e when a primary key value is
: entered (if it is already present in the old data) then a blank
: should be displayed in those not null columns. How will I do
: this?
: Any help is appreciated.
: Thanks in advance,
: satish
If you genuinely have some rows for your table where there are no
values for particular columns then you should leave the columns
null-enabled. This sounds to be the case here - a column does
not have to be defined as NOT NULL in order for data to be
entered; you will be able to enter your new data for these
columns even though they are not defined as NOT NULL.
In any case, while you have existing rows in the table with null
values for these columns, the SQL engine will not allow you to
change the columns to be NOT NULL.
Hope this helps,
Stuart Housden
null

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Javascript embedded in button pl/sql event handler not being executed

Javascript calls not working from pl/sql button event handler. What am I missing? Are specific settings needed to execute javascript from pl/sql proceedures?
Example: Want to toggle target='_blank' off and on in a button pl/sql event handler to open url call in new window & then reset when processing submit is done & the app returns to the form.
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htp.p('this.form.target="_blank"') ;
htp.p('</script>') ;
PORTAL.wwa_app_module.set_target('http://www.oracle.com') ;
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htp.p('this.form.target="_blank"') ;
htp.p('</script>') ;
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Metalink thought this was an application issue instead of a bug, so thought I'd see if anyone knows what's going wrong here. (Portal 9.0.4.1)

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Please clarify:
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What would you suggest the proper syntax for a function fcn_newwindow() call from a pl/sql javascript block that differs from
htp.p('<script language="Javascript">') ;
htp.p('fcn_newwindow');
htp.p('</script>');
or more simply
htp.p('fcn_newwindow') ;
More generally, what I'm trying to figure out is under what conditions javascript is executed, if ever, in the pl/sql of a button (either the submit or custom event handler, depending on the button).
I've seen lots of posts asking how to do a simple htp.p('alert("THIS IS TROUBLE")') ; in a pl/sql event handler for a button on a form, but no description of how this can be done successfully.
In addition to alerts, in my case, I'd like to call a javascript fcn from a pl/sql event handle that would pass a URL (e.g., http://www.oracle.com) where the javascript fcn executed
window.open(URL). The API call to set_target(URL) in pl/sql has no ability to open in a new window, so calling that is inadequate to my needs and I must resort to javascript.
Its clear in the PL/SQL of a button, you can effect form components since p_session..set_target & p_session.get_target set or get the contents of form components.
So to see if javascript ever works, I tried to focus on something simple that only had to set what amounts to an enviromental variable when we returned to the form after a post. I chose to try to change the html value of TARGET from javascript in the PL/SQL button because it doesn't need to be implemented until we finish the post and return to the form.
So I focused on a hack, setting this.form.TARGET='_blank' in the on_click event handler that forced every subsequent URL call or refresh of the form to be a new window. I then wanted to turn off opening new windows once I'd opened the URL call in a new window by setting TARGET='' in the portal form. I can achieve what I want by coding this.form.TARGET='' in the javascript (on_focus, on_change, or on_mousedown, ...) of every form component that might refresh the form. However, that is a ridiculous hack when a simple htp.p('<script>') ; htp.p('this.form.target=""') ; htp.p('</script>') ; at the end of the button's pl/sql event handle should do the same thing reliably if javascript ever works in the pl/sql event handler.
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htp.p('window.open(URL)' ) ;
htp.p('</script>') ;
the function can be called from a button's on_click javascript event handler:
fcn_new_window('http://www.oracle.com')
but from the same button's pl/sql submit event handler this call doesn't work: htp.p('fcn_new_window("http://www.oracle.com")')
So my questions remain: Is there other syntax I need, or does javascript ever work properly from the pl/sql of a form button's event handler? If it doesn't work, isn't this a bug that should be fixed by Oracle?
I can probably figure out hacks to make things work the way I need, but executing javascript from pl/sql event handlers seems to be the expected way to affect portal html pages (forms, reports, ...) and it seems not to work as expected. I don't feel I should have to implement hacks for something as simple as calling a javascript function from pl/sql when almost every example I've found in metalink or the forums or Oracle Press's "portal bible" suggests using javascript from pl/sql via the utility htp.p() to effect web page components in portal.
My TAR on the subject, while still open, returned the result basically: "We can reproduce your situation. Everything looks okay to us, but we can't explain how to use javascript where you want or point you to any documentation that would solve your problem or expain why it should not work the way you want it to. We don't feel its a technical issue. Why don't you post the problem on the portal applications forum."
I'm hoping I'm just missing something fundamental and everything will work if I implement it a little differently. So if anyone sees my error, please let me know.
by the way, not sure this is germain, but in reference to your comment:
"redirections in pl/sql procedures give a peculiar result. in a pl/sql procedure, usually, portals give the last redirection statement and ignore anything else coming after it."
if I try to raise an alert:
htp.p('alert("you screwed up")');
return;
in a pl/sql event handler, it still doesn't raise the alert, even though its the last thing implemented in the event handler. But if I set the value of a text box using p_session..set_value_as_string() at the same spot, it correctly sets the text box value when I return to the form.

Apex 4.1. cannot see the details of not null validations generated by apex

Hi there,
I have worked with APEX 3 quite a while. Now I move to new place, and they use APEX 4.
I am currently doing the Advanced Tutorials - Issues Tracker (written for 3.2 ) on an APEX 4.1.
I am quite impressed with a lot of enhanced features of APEX 4.
However, I think I got quite confused about the NOT NULL vaildations.
In the tutorials, they said when creating a form based on a tablle of which the columns have NOT NULL constraint, it will automatically generate NOT NULL validation.
But when I extend the validation section (in both Component View and Tree View), I cannot see any vaildation there.
So I go a head and create some NOT NULL validations for all NOT NULL fields.
Guess what, when I test the form, I got duplicate error messages.
I get these
6 errors have occurred
Project Name must have some value. (Go to error)
Start Date must have some value. (Go to error)
Target End Date must have some value. (Go to error)
Please provide project name. (Go to error)
Please provide project start date. (Go to error)
Please provide target end date. (Go to error)
My validation has error message "Please provide project name" while the automatic one has "Project Name must have some value".
The issue is I cannot find where the automatic validation is.
What if I want to customise the error message rather than just "#Label# must have some value".
Do any of you have any ideas why ?
I guess I must have chosen something wrong during page generation.
It could be quite simple but I don't know where to find the place that turn on/off the automatic not null validation, or at least customize these automatic error messages.
I currenly develop the application using workspace admin account.
Thanks a lot in advance.
Ann

I found it. Turn out to be the Settings, choose No for Required Value.

Event Handler not found -OIM 9102

Hi Experts,
I'm facing a problem while creating a user manually in OIM. Everytime I try to manually create a user, an error message is displayed on the GUI saying, "DOBJ.EVT_NOT_FOUND
Event Handler not found".
On checking the logs, this is what I get there. Since I'm a newbie, I'm not able to figure out what's happening.
Any help would be great.
java.sql.SQLIntegrityConstraintViolationException: ORA-01400: cannot insert NULL into ("XELADM"."UPA_USR"."ACT_KEY")
     at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:85)
     at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:112)
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:173)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:413)
     at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1030)
     at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:194)
     at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:947)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1222)
     at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3381)
     at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3462)
     at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1349)
     at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeUpdate(WrappedPreparedStatement.java:365)
     at com.thortech.xl.dataaccess.tcDataBase.writePreparedStatement(Unknown Source)
     at com.thortech.xl.dataobj.PreparedStatementUtil.executeUpdate(Unknown Source)
     at com.thortech.xl.audit.auditdataprocessors.UserProfileRDGenerator.insertUserProfile(Unknown Source)
     at com.thortech.xl.audit.auditdataprocessors.UserProfileRDGenerator.processUserProfileChanges(Unknown Source)
     at com.thortech.xl.audit.auditdataprocessors.UserProfileRDGenerator.processAuditData(Unknown Source)
     at com.thortech.xl.audit.genericauditor.GenericAuditor.processAuditMessage(Unknown Source)
     at com.thortech.xl.audit.engine.AuditEngine.processSingleAudJmsEntry(Unknown Source)
     at com.thortech.xl.audit.engine.AuditEngine.processOfflineNew(Unknown Source)
     at com.thortech.xl.audit.engine.jms.XLAuditMessageHandler.execute(Unknown Source)
     at com.thortech.xl.schedule.jms.messagehandler.MessageProcessUtil.processMessage(Unknown Source)
     at com.thortech.xl.schedule.jms.messagehandler.AuditMessageHandlerMDB.onMessage(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
     at org.jboss.ejb.MessageDrivenContainer$ContainerInterceptor.invoke(MessageDrivenContainer.java:495)
     at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
     at org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor.invoke(MessageDrivenInstanceInterceptor.java:116)
     at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
     at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
     at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
     at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
     at org.jboss.ejb.plugins.RunAsSecurityInterceptor.invoke(RunAsSecurityInterceptor.java:109)
     at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
     at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
     at org.jboss.ejb.MessageDrivenContainer.internalInvoke(MessageDrivenContainer.java:402)
     at org.jboss.ejb.Container.invoke(Container.java:960)
     at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:1092)
     at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1392)
     at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:266)
     at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:906)
     at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:170)
     at org.jboss.mq.SpySession.run(SpySession.java:323)
     at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:194)
     at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:761)
     at java.lang.Thread.run(Thread.java:619)
2011-03-18 15:55:01,283 ERROR [XELLERATE.AUDITOR] Class/Method: UserProfileRDGenerator/insertUserProfile encounter some problems: Failed to insert user profile record in table UPA_USR for auditee 5943
2011-03-18 15:55:01,283 ERROR [XELLERATE.AUDITOR] Class/Method: UserProfileRDGenerator/insertUserProfile encounter some problems: {1}
com.thortech.xl.orb.dataaccess.tcDataAccessException
     at com.thortech.xl.dataaccess.tcDataAccessExceptionUtil.createException(Unknown Source)
     at com.thortech.xl.dataaccess.tcDataBase.createException(Unknown Source)
     at com.thortech.xl.dataaccess.tcDataBase.writePreparedStatement(Unknown Source)
     at com.thortech.xl.dataobj.PreparedStatementUtil.executeUpdate(Unknown Source)
     at com.thortech.xl.audit.auditdataprocessors.UserProfileRDGenerator.insertUserProfile(Unknown Source)
     at com.thortech.xl.audit.auditdataprocessors.UserProfileRDGenerator.processUserProfileChanges(Unknown Source)
     at com.thortech.xl.audit.auditdataprocessors.UserProfileRDGenerator.processAuditData(Unknown Source)
     at com.thortech.xl.audit.genericauditor.GenericAuditor.processAuditMessage(Unknown Source)
     at com.thortech.xl.audit.engine.AuditEngine.processSingleAudJmsEntry(Unknown Source)
     at com.thortech.xl.audit.engine.AuditEngine.processOfflineNew(Unknown Source)
     at com.thortech.xl.audit.engine.jms.XLAuditMessageHandler.execute(Unknown Source)
     at com.thortech.xl.schedule.jms.messagehandler.MessageProcessUtil.processMessage(Unknown Source)
     at com.thortech.xl.schedule.jms.messagehandler.AuditMessageHandlerMDB.onMessage(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
     at org.jboss.ejb.MessageDrivenContainer$ContainerInterceptor.invoke(MessageDrivenContainer.java:495)
     at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
     at org.jboss.ejb.plugins.MessageDrivenInstanceInterceptor.invoke(MessageDrivenInstanceInterceptor.java:116)
     at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
     at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
     at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
     at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
     at org.jboss.ejb.plugins.RunAsSecurityInterceptor.invoke(RunAsSecurityInterceptor.java:109)
     at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
     at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
     at org.jboss.ejb.MessageDrivenContainer.internalInvoke(MessageDrivenContainer.java:402)
     at org.jboss.ejb.Container.invoke(Container.java:960)
     at org.jboss.ejb.plugins.jms.JMSContainerInvoker.invoke(JMSContainerInvoker.java:1092)
     at org.jboss.ejb.plugins.jms.JMSContainerInvoker$MessageListenerImpl.onMessage(JMSContainerInvoker.java:1392)
     at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:266)
     at org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:906)
     at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:170)
     at org.jboss.mq.SpySession.run(SpySession.java:323)
     at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:194)
     at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:761)
     at java.lang.Thread.run(Thread.java:619)
Thanks,
Nikhil

Check for the ACT_KEY in the USR table in the database for User with the key 5943. It should not be null. Just a hunch by looking at the error and of course as Kevin said, you need to truncate the jms stuff.
-Bikash

Error handling in Portal standard forms

I have a customer who needs to validate input on a Form Based on a Table (standard component). They have tried code, as shown below, as a PLSQL handler on a Save button. This example can obviously be solved with JavaScript validation on the client, but they have similar requirements for validation on DB level.
If procedure call 1) in the if statement is used, nothing happens. If procedure call 2) is used, it is executed in a new page as a standard error Oracle Portal error message.
declare
v_sender VARCHAR2(1000);
v_sender_id NUMBER;
begin
v_sender := p_session.get_value_as_VARCHAR2(
p_block_name => 'DEFAULT',
p_attribute_name => 'A_SENDER');
v_sender_id := p_session.get_value_as_NUMBER(
p_block_name => 'DEFAULT',
p_attribute_name => 'A_SENDER_ID');
insert into hd (number, text) values (hd_seq.nextval,
'step 3 v_sender = ' || v_sender ||
' v_sender_id = ' || v_sender_id);
if v_sender_id >= 100 then
1) Custom error handling, does not display:
show_error('Error message');
2) Error handling is displayed, but as a standard error:
raise_application_error(-20000, 'SenderID must be smaller than 100.');
else
doInsert;
end if;
end;
The customer has two questions:
Why does the custom procedure in 1) "show_error" not execute, and if it does, why does it not display? show_error works and the if statement is entered.
Is it possible to take control of Portals error handling on standard components (forms etc.), to show custom error messages with the style used on the component/page instead of the standard Error: ORA- ....etc. as Portal displays it?
Customer needs reply asap. Please reply directly. Any help will be much appreciated!
Kind regards
Jakob Lund

Jacob,
Try following:
declare
v_sender VARCHAR2(1000);
v_sender_id NUMBER;
begin
v_sender := p_session.get_value_as_VARCHAR2(
p_block_name => 'DEFAULT',
p_attribute_name => 'A_SENDER');
v_sender_id := p_session.get_value_as_NUMBER(
p_block_name => 'DEFAULT',
p_attribute_name => 'A_SENDER_ID');
insert into hd (number, text) values (hd_seq.nextval,
'step 3 v_sender = ' || v_sender ||
' v_sender_id = ' || v_sender_id);
if v_sender_id >= 100 then
p_session.set_value(
p_block_name => "_block",
p_attribute_name => '_STATUS',
p_value => 'Sender ID must be less than 100!');
-- return to your form with status message set
-- and all fields filled with recent values
return;
end if;
end;
-- This point is reached only if validation is OK
doInsert;
Regards,
Henn

Handling "NOT NULL" in forms(4.5)

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