Oracle Workflow - MV Dirona.ppt.ppt

1、Kevin HudsonOracle Corporation October 2001,Evolution of Workflow Oracle from Application to Infrastructure,Brief History of Workflow Oracle,1993 Oracle Applications Release 10 Financials Manufacturing Human Resources Not Workflow as we would know it. Order Entry Order Cycle and Approvals Purchasing

2、 PO Approval All “Workflow” capabilities built directly into the application,Workflow Emerges,1994 Oracle Workflow Traditional Applications based Workflow Complete API access to all services PL/SQL, C Java API Requirements driven by Oracle Applications The move to Self Service Applications Common ru

3、les engine for Oracle Applications Common Worklist for Oracle Applications Common configuration model for Oracle Applications,1995 Workflow Takes Hold,New Applications see the light Engineering Approval Self Service Requisition Self Service Expense Reports Self Service Human Resource Predominately d

4、riven by the need for: Worklist Approvals Self Service Configuration,Expense Report Processing,AP Standard Expense Report Process,Expense Report Processing,Workflow Marches On,Established Applications make the move to Workflow Order Management Purchasing General Ledger Account Receivable Workflow be

5、comes a component of the Applications development platform,Procurement Workflow,Approval Workflow,ASN,Pay on Receipt,Create Requisitions,AutoRelease,Approved Supplier Lists,Payment,Approved,Suppliers,Internet Procurement 100% Lifecycle Automation,Search,Catalog (Local or TPN Register),Content Loads/

6、Updates,Workflow is much more than approvals,Release 11i Order Management Workflow,Order Cycles,Workflow Processes,Cycle Actions,Workflow Functions,Cycle Approvals,Workflow Notifications,Workflow enforces business rules,Release 11i Order Management Workflow,Workflow Enabled e-Business Suite,ERP Orde

7、r Management Internet Procurement Self Service Financials Advanced Planning System Projects HRMS Candidate Offer Career Management Reviews,Release 11i highlights,CRM Call Center Service Contacts Support Marketing iStore,And many more.,Workflow Components,Workflow Engine,Heavily based on Oracle datab

8、ase technology Database Queues (Used internally by the Workflow Engine ) 100% audit trail in relational tables Two Phase commit Transactional Integrity Scalability, Performance ,o7,Oracle Applications,Oracle Workflow,Oracle 9i,Server Side Architecture Ensures Optimal Performance,So Whats Wrong with

9、all that?,Nothing! But Theres a lot more to Workflow But The Oracle Platform has a lot more to offer. Workflow was too tightly bound to the applications Great for Control but what about collaboration? What is at the center Workflow or the Applications We needed to move with the technology “We needed

10、 Business Events”,The Real Break through,Applications Workflow meets Platform Workflow OR Oracle Applications meets Server Technology OR Kevin Hudson meets Dieter Gawlick,The Story Continues,1998 Workflow Business Event System Manage Internal and External business processes that span information sys

11、tem Workflow process can be started or progressed by a business event Workflow activities can initiate a business event Workflow loosely bound to the application Respond to and initiate Business Events,Business Event Driven Workflow,Business Events System EVENTs are things which have occurred that m

12、ight be significant to other objects in a system, or to external systems. The set of possible events is pre-determined by the applications. Business Event != Message Producing the event message may be costly and should be avoided unless an active subscription requires it. Business Event != IT Event

13、Event Based Subscriptions is a super set of Publish/ Subscribe Publish Subscribe is necessary but not complete Event Based Subscription is an extension over publish/subscribe,From Control To Collaboration,The evolution from classical API driven Workflow towards business events driven Workflow Applic

14、ations raise business events Workflow consumes business events Workflow raise business events Workflow that can react and respond to Business Events that occur outside their domain A whole new type of Workflow Essential for Application Integration (EAI),Workflow Moving Down the Technology Stack,Comp

15、onent of Oracle database technology Database Queues (Used internally by the Workflow Engine ) Database Queues ( Used for External Communication ) Security, Performance, Scalability ( Only truly achievable as part of the platform ) Database features become more tightly integrated and consistent with

16、Workflow e.g LDAP,o7,Oracle Applications,Oracle Workflow,Oracle 9i,Server Side Architecture Ensures Optimal Performance,Oracle 9i With Workflow,Workflow as a component of the Infrastructure,Provider and Consumer/driver of platform technology, Consumes database platform (performance, scalability,secu

17、rity ) Consumes messaging, queuing and pushes the platform Provides business events ( drives the requirements into the platform ) Cooperates on Composite Events Shows the need for LDAP integration,22,Model Driven Integration,Extends message broker model Flexible Provides process view Simple Requires

18、 a model of the business process,Order Entry,Warehouse,Web Store,Workflow,Credit Management,Accounting,Human Resources,Shipping,Data Warehouse,Inter-Enterprise Business Processes,Logistics,Bank,Supplier A,Supplier B,Internet,Integration Hub,Integration Hub,Integration Hub,Integration Hub,Business Ev

19、ents System,Workflow Engine,Oracle Applications,Business Events (XML),Workflow Business Event System,Event driven Workflow processes,Business Events New Order Update Order Cancel Order,Roles,Users,Directory Services,Notification Services,Send,Respond,Forward,Cancel,Query,Oracle Workflow Enabled Application,Oracle server,Workflow Engine,Workflow Builder,Workflow Loader,Workflow Definition Files,Workflow D