We require following schema.
EM stands for Enterprise Manager. It is webpage we deploy, test, monitor, diagnose and resolve problem for composites. It is hosted on the Admin Server.
Binding components are of two types as mentioned below.
Primarily we have three types of BPEL template in SOA Suite tool.
A domain is the basic administration unit for WebLogic Server instances. i.e. Domains include a special WebLogic Server instance called the Administration Server, which is the central point from which you configure and manage all resources in the domain.
If we have multiple composites with same name then only one composite will act as default composite which will run only. But we can go to EM console and make other composite default.
Below are the major benefits of partition.
BPEL stands for Business Process Execution Language, it is one of the component of SOA Suite tool. BPEL is a XML based language used to design business process/flows. We perform service orchestration in BPEL.
Below are different parts of BPEL as mentioned below.
yes, we can have as many as service components in one composite but it is not recommended, we should not have all the components in one composite itself.
Composite needs to send the message to first target by JMS queue and to other target by writing the file, in this scenario we have two exist for composite.
SOA stands for Service Oriented Architecture. SOA is not any tool, rather is a concept and there are many tools in the market based upon this concept. In this SOA Concept, we use SOA layer as middle or intermediate layer between services so that these service can communicate with each other.
When a composite can be initiated either by direct call or by consuming the same message from JMS queue, in this scenario we have two entry point for same composite.
Sections of the SOA Infrastructure where we deploy SOA composite applications known as partition. When we install SOA suite tool, default partition get created with name “default” but we can add as many as partitions as required.
Connection between service & binding component and within service & binding components know as wire. I.e. This enable us to graphically connect the components in a SOA composite application.
Mostly WebLogic server is used as application server for Oracle SOA Suite tool.
SOA Suite tool is a middleware tool from Oracle which is based upon SOA concept comes under Oracle Fusion Middleware stack. We use this tool for integration purpose .i.e. This tool is used to integrate two system/applications etc.
Yes, we can more than one service & reference binding in one composite, that me we can have more than one entry & exist point for composite.
There are different methods to deploy SOA composite to SOA server.
SOA composite is a assembly comprises of one or more than one pre-build components. In SOA composite we wires different components together to perform required business functionality.
HBase comes integrated with Zoo keeper. When I start HBase, Zoo keeper instance is also started. The reason is that the Zoo keeper helps us in keeping a track of all region servers that are there for HBase. Zoo keeper keeps track of how many region servers are there, which region servers are holding from which data node to which data node. It keeps track of smaller data sets where Hadoop is missing out. It decreases the overhead on top of Hadoop which keeps track of most of your Meta data. Hence HMaster gets the details of region servers by actually contacting Zoo keeper.
All other WLS instances in a domain are called Managed Servers. Managed servers host application components and resources.
We have total 5 components in Oracle SOA Suite tool as mentioned below.
The MemStore is a write buffer where HBase accumulates data in memory before a permanent write.
Its contents are flushed to disk to form an HFile when the MemStore fills up.It doesn’t write to an existing HFile but instead forms a new file on every flush. There is one MemStore per column family.
Each service component is hosted in its own service engine container. E.g. Any logic added in BPEL components will be handled by BPEL service engine only.
As name suggest, this component is used to bind composite application to external world. i.e. we use these components to link composite with source and target system.
Following components needs to be installed before we install Oracle SOA Suite.
Config plan is used during composite deployment. This is a xml file where we specify the parameters that we want to replace while doing the deployment to next environment.
Below are the major benefits that we get from SOA.
We can perform below operations.
soa-infra is a J2EE application that is targeted to either a managed server or a cluster. All the composites gets deployed under soa-infra application.
All prebuilt components BPEL , Mediator, Business Rules, Human Task and Spring known as service components.
We cannot be sure that the data will be persistent throughout in Memstore. Assume that a particular datanode is down. Then the data that resides on that data node’s memory will be lost.
To overcome this problem, when the request comes from the master it written to WAL as well. WAL is nothing but Write Ahead Logs which resides on the HDFS, a permanent storage. Now we can make sure that even when if the data node is down the data will not be lost I.e. we have the copy of all the actions that you are supposed to do in the WAL.
Cluster is a group of server instances that work together as a single runtime unit from a client perspective. Clustering provides scalability and high availability for applications.
We use JDeveloper IDE for Oracle SOA suite tool.
They are − (i) Short and Wide (ii) Tall and Thin
Yes, we can have multiple composites with same name on SOA server but this is possible when we have composites with revisions.
A domain has one WLS instance configured as an admin server. The admin server provides a central point for managing a domain.
Yes SOA Suite tool is a state full tool, that me in this tool we store every state in database i.e. we store all the incoming messages, trformed messages, outgoing messages to database along with timestamp.