Adding Multiple LOV's to a single ViewObject attribute

There is a requirement like i need to show different LOV(different LOV i mean LOV deriving data from different sources) defined  on one attribute based on the value selected from another attribute.

Requirement :

 Implementation:

I have a VO called SearchPanelVO in which i have 2 attributes called CriteriaAttr and CriteriaVal.
On CriteriaAttr  attribute i have defined a drop down from a static list as shown below :

So based on the value selected from this static list i need to invoke different LOVs defined on CriteriaVal attribute which means if i select "AIT #" i should show AitNameLOV, if i select "App Manager #" i should show AppManagerContactLOV and similarly AppMgmtContactLOV  and so on.

Open the SearchPanelVO , and in order to switch LOVs I defined new transient attribute LovSwitcher.(shown in snapshot below) The value of this attribute is a groovy expression which when evaluated should give proper LOV's name. Then i defined 5 LOVs on CriteriaVal attribute as shown in snapshot below.

 The groovy expression on the value property of the new transient attribute is like :

On the page add partialtrigger on the CriterVal attribute so that it can refresh based on the value selected in CriterAttr drop down.

Next you need to add a small piece of code which will clear the value selected from any LOV on the CriterVal attribute on changing value in CriteriaAttr attribute. Implement a ValueChangeListener on CriteriaAttr attribute which will clear the value from CriteriaVal attribute.

Done !!!

7 Tips for Better Jdeveloper Experience

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Tips and Tricks from Oracle Team

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Installing Oracle XE 11.2.0.0.5 , Weblogic 10.3.5 and SOA 11.1.1.5.0 in 64 bit CentOS 5.6

Make sure that you have downloaded all the required files for installation. I installed all the products in 64 bit CentOS 5.6 release.

Confirm your system type by following:

# uname -i
x86_64
# uname -a
Linux dhcpfbb8t-47.mdacc.tmc.edu 2.6.18-238.12.1.el5 #1 SMP Tue May 31 13:22:04 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
# cat /etc/*release*
cat: /etc/lsb-release.d: Is a directory
CentOS release 5.6 (Final)

JDK 1.6 - jdk-6u27-ea-bin-b01-linux-amd64-18_may_2011.bin

Install jdk as root user and set the JAVA_HOME in the ~/.bashrc file

export JAVA_HOME=/opt/jdk1.6.27

export PATH=$JAVA_HOME/bin:$PATH

JDeveloper - jdevstudio11115install.bin

Install jdeveloper as root user and set the JDEV_HOME in ~/.bashrc file.

export JDEV_HOME=/opt/jdk1.6.27

export PATH=$JAVA_HOME/bin:$JDEV_HOME/bin:$PATH

Oracle XE - oracle-xe-11.2.0-0.5.x86_64.rpm

Download the above file and install as root user

rpm -ivh oracle-xe-11.2.0-0.5.x86_64.rpm

Now edit the ~/.bashrc and make the below changes.

export ORACLE_HOME="/u01/app/oracle/product/11.2.0/xe"
export PATH=$ORACLE_HOME/bin:$JAVA_HOME/bin:$JDEV_HOME/jdev/bin:$PATH

After the installation, you need to change the processes and sessions values using sqlplus.

sqlplus sys/<password>@<sid> as sysdba;

SQL> ALTER SYSTEM SET PROCESSES=900 SCOPE=SPFILE;

System altered.

SQL> ALTER SYSTEM SET SESSIONS=900 SCOPE=SPFILE;

System altered.

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> exit

Now start the database again by

/etc/init.d/oracle-xe start

Before proceeding further, you need to make sure that you have all the required os packages are installed.

yum install compat-libstdc++-296 binutils compat-db control-center gcc gcc-c++ glibc glibc-common gnome-libs libstdc++ libstdc++-devel make pdksh sysstat xscreensaver libaio openmotif21 libaio-devel-0.3.106 compat-libstdc++-33 unixODBC-2.2.11 unixODBC-devel-2.2.11 elfutils-libelf-devel

Also edit /etc/security/limits.conf and make the below changes

oracle          hard    nofile  4096
oracle          soft    nofile  4096

Create Schemas using RCU - ofm_rcu_linux_11.1.1.5.0_disk1_1of1.zip

Unzip and Run the command 'rcuHome/bin/rcu' an install schemas for SOA and webcenter.(Ignore warnings)

Oracle Weblogic 10.3.5 - wls1035_generic.jar

Now we are ready to install weblogic.

java -d64 -jar wls1035_generic.jar

Oracle SOA 11g
ofm_soa_generic_11.1.1.5.0_disk1_1of2.zip
ofm_soa_generic_11.1.1.5.0_disk1_2of2.zip

Download the above files and unzip to a directory. Now run the installater (./runInstaller) from Disk1.

Oracle UCM 11g
ofm_ecm_generic_11.1.1.5.0_disk1_1of2.zip
ofm_ecm_generic_11.1.1.5.0_disk1_2of2.zip

Oracle OSB 11g
ofm_osb_generic_11.1.1.5.0_disk1_1of1.zip

Oracle WebCenter 11g
ofm_wc_generic_11.1.1.5.0_disk1_1of1.zip

Error: Java code in jsp source files is not allowed in ojsp.next mode

If you get "Error: Java code in jsp source files is not allowed in ojsp.next mode" when running jspx applications, you need to enable user customizations.

In Jdeveloper workspace,

1. Go to Project Property

2. Go to ADF View

3. Enable User Customizations

4. check on Across Sessions using MDS

Also you need to either adapt your code to remove the scriptlets in your JSP page,

or you can use the following Java option to disable OJSP:

-Dadfvdt.disableOjspDeployment=true

You can add this option -Dadfvdt.disableOjspDeployment=true in your file "ide.conf" in the directory "<Middleware_Home>\jdeveloper\ide\bin"

For your Production environment, you can have your Managed WLS ignoring the OJSP mode by adding the Java Option -Dadfvdt.disableOjspDeployment=true

* in the "startManagedWebLogic" (if you want to limit it to a specific Managed Server)

* or "setDomainEnv" (for all managed servers in a domain).