How to Install TypeScript on your machine using Nodejs Manager

What is TypeScript ?

Type script is type superset of JavaScript that compiles to plain JavaScript.


Installation 

1. To install TypeScript using node manager CLI, you will have to setup nodejs Manager. For this you can follow the previous post "How to install Nodejs".
2. After completing the Nodejs installation you can go to command prompt /Powershell on windows and type below command to install the typescript
3. npm install -g typescript
4. You might also end up finding below error if you are using proxy Server in your network for the internet connection.
5. In this case you might want to setup the proxy setting for the npm. 

npm config set proxy http://:@: 
npm config set https-proxy http://:@:

You have to replace , , , with the values specific to your proxy server credentials

Exception in thread “main” java.net.MalformedURLException: Unsupported protocol: t3

Unsupported protocol : t3 error will come when you are trying to connect to weblogic server through your Java code using t3 URL. For this you need to include weblogic Network protocol library to the project classpath.

Add below two jar file to your project's build path :

• wlclient.jar
• wljmxclient.jar

Or Simply add

• wlfullclient.jar

 

Namespace prefix "oraext" qualifying cannot be resolved while Designing BPEL processes in Oracle SOA Suite 11g

SOA Developers mainly encounters this issue while using Oracle Extension functions in the Assign or Transform activities.

This error occurs when namespace is not defined in your BPEL process. check two points here.
1. Is namespace : http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc is already defined in BPEL process or not ? if not, Define it as below.
xmlns:oraext="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc"

2. If namespace is already defined in the BPEL process then you need verify the prefix value here.for example below is the entry found in BPEL process.
 xmlns:ns4="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc"

here you need rename the prefix values "ns4" to "oraext".  OR

modify the function name prefix in Transformation with "ns4"

ORA-12516, TNS:listener could not find available handler with matching protocol stack

In one of my SOA project, we are running SOA Suite 11g - 11.1.1.4  on Weblogic 11g Cluster in Bladframe machine. Backend used here for SOA Schema database is Oracle 11g RAC database.

After couple of weeks of successfully execution in developement environment we hit this issue of  ORA-12516, TNS:listener. This error generally means there is no connection available to the database.We need to configure the database to allow more connection.

As suggested by Oracle, we should have number of processes setting to 200 for SOA Suite 11g. This setting is already in place and still we hit the ORA-12516, TNS:listener-issue. This happens mostly because of wrong Data sources connection settings, which allows to exapand its connection pool to hundreds of connections.

Even while restarting the weblogic server you will not be able to get the weblogic server in running mode , because all data sources will fail while trying to connect to database and you server state will go to Admin mode because of this.

Solution to ORA-12516, TNS:listener Error

1. Loging to one of the database node using sqlplus as sys or system (basically sysdba role required)
2. Increase the number processes and sessions by executing below commands
• ALTER SYSTEM SET PROCESSES=400 SCOPE=SPFILE;
• ALTER SYSTEM SET SESSIONS=400 SCOPE=SPFILE;
3. Bounce the database again to take these changes
• SHUTDOWN IMMEDIATE;
• STARTUP;
4. To Verify the settings are updated properly; execute below sql commands
1. SHOW PARAMETERS PROCESSES;
2. SHOW PARAMETERS SESSIONS;

If you are using Oracle RAC database you may want to perform these steps again on another node.