|
IBM WebSphere Optimized Local Adapters (OLA or WOLA) is a functional component of IBM's WebSphere Application Server for z/OS that provides an efficient cross-memory mechanism for calls both inbound to WAS z/OS and outbound from z/OS. Because it avoids the overhead of other communication mechanisms, it is capable of high volume exchange of messages. WOLA is an extension to the existing cross-memory exchange mechanism of WAS z/OS, with WOLA providing an external interface so z/OS address spaces outside the WAS z/OS server may participate in cross-memory exchanges. WOLA supports connectivity between a WAS z/OS server and one or more of the following: CICS, IMS, Batch, UNIX Systems Services and ALCS. WOLA was first made available in WAS z/OS Version 7, Fixpack 4 (7.0.0.4). Functional enhancements have appeared in subsequent fixpacks as documented in this article. == History == The WebSphere Optimized Local Adapters for WAS z/OS (WOLA or OLA for short) has its origins in a desire to provide an efficient ''inbound'' calling mechanism; that is, from ''outside'' the Java EE environment into it to exercise Java EE assets. This requirement was particularly pronounced on z/OS where traditional batch processing sought the use of a growing base of programming assets based on Java EE and EJB technology. Other inbound solutions existed, for example: *Messaging, such as Websphere MQ or other JMS providers. *RMI/IIOP *Web Services While each had its respective strengths; each also had its particular shortcomings: overhead and latency; difficulty in construction; or deficiencies in the security or transaction propagation model. This was the original design point for the Optimized Local Adapters. The architects of the solution extended the design to include bi-directional invocations: ''inbound'' to WAS z/OS from an external address space, and ''outbound'' from WAS to an external address space. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「WebSphere Optimized Local Adapters」の詳細全文を読む スポンサード リンク
|