Home » Developer & Programmer » Forms » Peculiar problem in Hierarchical Tree in Oracle Forms (Oracle Form Builder Version10.1.2.0.2. OS: Windows 7)
Peculiar problem in Hierarchical Tree in Oracle Forms [message #640533] Thu, 30 July 2015 06:39 Go to next message
limig
Messages: 11
Registered: April 2010
Location: Asia
Junior Member
I have a hierarchical tree in a form which displays a list of reports. Double clicking a node initializes corresponding parameter (text) fields on the right side of the form. The tree is created using a record group. Things are working well but with a few glitches.
(1) If the root node is double-clicked, all the labels vanish but the structure of the tree remains!
(2) Double-clicking any other node does not highlight the selection i.e. the user has to remember which node he clicked
(3) The list has many nodes so one has to scroll down to see more nodes. Whenever a lower node is double-clicked, scroll-bar
jumps up and only the uppermost part of the tree is shown.

Can anyone help on these? Thanks in advance.

(I am attaching a screenshot of the tree, before and after a double-click is made on the root)

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640540 is a reply to message #640533] Thu, 30 July 2015 08:59 Go to previous messageGo to next message
CraigB
Messages: 386
Registered: August 2014
Location: Utah, USA
Senior Member
What is your exact Forms version (eg: 10.1.2.0.2) and your Java version? This appears to be a Java related issue, since it is the Java UI methods that are used to display the Tree Control. More than likely you simply need to update your Java version, to the latest supported version for your Forms version, to correct the issue.

Craig...

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640583 is a reply to message #640540] Fri, 31 July 2015 03:03 Go to previous messageGo to next message
limig
Messages: 11
Registered: April 2010
Location: Asia
Junior Member
Thanks for your reply Craig.

Forms version 'am using is 10.1.2.0.2. And I have Java 8 installed in my pc.

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640594 is a reply to message #640583] Fri, 31 July 2015 08:15 Go to previous messageGo to next message
CraigB
Messages: 386
Registered: August 2014
Location: Utah, USA
Senior Member
Forms 10.1.2.0.2 is not certified with Java 8 (which version do you have installed). Additionally, this Forms version is not certified on Windows 7 - you would need to install Patchset 3. There were bugs in the initial release 2 (which is what you are using) that affected the Tree Control and other features. If you have a support contract with Oracle, you can get Patchset 3. If not, you may want to consider upgrading your Forms installation to Forms 11g R2 (Fusion Middleware 11g).

If none of these are options, you can try adding a call to the SYNCHRONIZE() built-in in your When-Tree-Node-Activated trigger to force the client to synchronize with the App Server. This might work...

Craig...

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640706 is a reply to message #640594] Tue, 04 August 2015 05:22 Go to previous messageGo to next message
limig
Messages: 11
Registered: April 2010
Location: Asia
Junior Member
Thanks. Will try and let know.

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640707 is a reply to message #640706] Tue, 04 August 2015 05:51 Go to previous messageGo to next message
limig
Messages: 11
Registered: April 2010
Location: Asia
Junior Member
Tried SYNCHRONIZE in When-Tree-Node-Activated trigger. Didn't help.

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640729 is a reply to message #640707] Tue, 04 August 2015 10:57 Go to previous messageGo to next message
CraigB
Messages: 386
Registered: August 2014
Location: Utah, USA
Senior Member
I suggest you try downgrading your Java to 1.6 or 1.7 to see if this is an issue of compatibility between Forms 10g and Java 1.8.

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640849 is a reply to message #640729] Thu, 06 August 2015 01:02 Go to previous messageGo to next message
limig
Messages: 11
Registered: April 2010
Location: Asia
Junior Member
Ran the form in another pc having Java 1.6. Same problem occurred.

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Re: Peculiar problem in Hierarchical Tree in Oracle Forms [message #640891 is a reply to message #640849] Thu, 06 August 2015 08:36 Go to previous message
CraigB
Messages: 386
Registered: August 2014
Location: Utah, USA
Senior Member
I'm out of suggestions. Sorry. More than likely this is a bug in 10.1.2.0.2. Oracle always recommends running the latest version of a particular release. This means you would need to install patchset 3 (version 10.1.2.3.0) but you will need a support contract with Oracle in order to obtain this patchset.

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