Skip to main content

Oracle 11i Applications Architecture




The Oracle Applications Architecture is a framework for multi-tiered, distributed computing that supports Oracle Applications products. In this model, various servers are distributed among multiple levels, or tiers.


Oracle Applications Architecture


The Desktop Tier


The client interface is provided through HTML for the newer HTML-based applications, and via a Java applet in a Web browser for the traditional Forms-based interface.


Forms-based Desktop Tier Architecture


In Oracle Applications Release 11i, each user logs in to Oracle Applications through the E-Business Suite Home Page on a desktop client web browser.


Forms Client Applet


The Forms client applet is a general-purpose presentation applet that supports all Oracle Applications Forms-based products, including those with customizations and extensions. The Forms client applet is packaged as a collection of Java Archive (JAR) files. The JAR files contain all Java classes required to run the presentation layer of Oracle Applications forms.


Oracle Jinitiator


The Forms client applet must run within a Java Virtual Machine (JVM) on the desktop client. The Oracle JInitiator component allows use of the Oracle JVM on web clients instead of the browser’s own JVM. JInitiator is implemented as a plug-in (Netscape) or ActiveX component (Microsoft Internet Explorer).


The Forms client applet and commonly used JAR files are downloaded from the Web server at the beginning of the client’s first session. Less commonly used JAR files are downloaded as needed.


The Application Tier


The Application tier has a dual role: hosting the various servers that process the business logic, and managing communication between the desktop tier and the database tier. This tier is sometimes referred to as the middle tier. Oracle9i Application Server (9iAS) provides the technology used on the application tier. Six servers comprise the application tier for Oracle Applications:


• Web server

• Forms server

• Reports server

• Discoverer server (optional)

• Concurrent Processing server

• Admin server


Try to avoid using a mixture of different platforms on your application tier. This makes maintenance easier, since only one set of patches needs to be downloaded.


Load Balancing


The application tier supports load balancing among many of its servers to provide higher availability, fault tolerance, reliability, and optimal scalability. If you have more than one of any of the following types of server, load balancing can be employed:


• Web server

• Forms server

• Reports server

• Discoverer server

• Concurrent Processing server


Typically, load balancing is most commonly used to spread the load across multiple Web servers, where the load may vary significantly.

For More Information : Keep watching this blog

Powered by : Oracle Documentation



Comments

Post a Comment

Popular posts from this blog

How to Solve SOC7 Abend - with screen shots

Below process helps to find out the statement, caused the SOC7 error. Check the Sysout of RUNJCL . This shows the error statement and lists offset value Take the Offset Value 000003C0 Got to respective Compilation Job listing, check the sysprint Search for the offset value 0003C0 (delete +00 -- initial 3 letters of Offset value and search for it) check below 2 screen shots This Offset value is listed under line no 0045 – which refers to Move statement. Take this no. 045 and find for it in same sysprint. This points to the exact statement, caused SOC7 T his 045 pints to the Move statement 1526, this is the exact line in the program Check for the above line no. In source program . This points to the statement highlighted below . Check the statement, variable check-4, which is added to check-6. These are having different Picture clause. check-4 is alfhanumaric, holding some junk data, when this data is moved to Chcek-6 variable(of comp-3) creates SOC7 error. This is just an example to e...
16 comments
Read more

NULL VALUES and NULL INDICATORS in DB2

In DB2, the columns defined as NULL needs to be handled carefully else it will throw null exception error, in order to over come this error data type can be handled by using null indicator . NULL is stored using a special one-byte null indicator that is "attached" to every nullable column. If the column is set to NULL, then the indicator field is used to record this. Using NULL will never save space in a DB2 database design - in fact, it will always add an extra byte for every column that can be NULL. The byte is used whether or not the column is actually set to NULL. The indicator variable is transparent to an end user Consider below Table : Create Table SAMP_TAB SN CHAR (10) SNAME CHAR (10) STATUS CHAR (2) NOT NULL BY DEFAULT CITY CHAR (10) NOT NULL Note :: Unless you specify NOT NULL, the default is to allow for NULL In above table SN and SNAME columns holds null values by default, in order to handle these null variables we need to have NULL-INDICATORS declares in the Pro...
15 comments
Read more

Mainframe Written test @ Accenture

1. What r the 2 function we can get by using INSPECT verb? (c) A. file handling, error handling B. opening a file, closing a file. C. char counting, replacing. D. none of the above 2. Indicate which of the following is not true about the formal parameters in a subroutine? (c) A. every formal parameter must appear in the linkage section of the subroutine B. every formal parameter must appear in the using phrase of the procedure division header of the subroutine C. A formal parameter name can appear more than once in the using phrases of the procedure division header of the subroutine. D. A formal parameter can not be declared with value clause in a subroutine 3. What is the value of A? (B) 01 A pic 9(3). Move 100 to A. Perform 1000-para thru 1000-exit. Display the value of a=A Stop run. 1000-para. If A=100 Perform 1000-exit Else Move 150 to A End-if. Move 200 to A. 1000-exit. Exit. a.100 b.200 c.150 d. none of the above is correct. 4. What is the value of B? (A) Move 1 to A Evaluate tr...
2 comments
Read more