IBM WAVV 2004 ユーザーズマニュアル
VSE/ESA 2.6/2.7
VSAM Redirector
The VSAM Redirector is a new VSE/ESA connector, introduced with VSE/ESA
2.6. The VSAM Redirector allows you to redirect all requests to a certain VSAM
file into any other file system or database on any other (Java-enabled) platform.
VSE/ESA is the client, while the server part runs on any other Java-enabled
platform like Windows.
2.6. The VSAM Redirector allows you to redirect all requests to a certain VSAM
file into any other file system or database on any other (Java-enabled) platform.
VSE/ESA is the client, while the server part runs on any other Java-enabled
platform like Windows.
For example you could use the VSAM Redirector to synchronize a VSAM file with
a DB2 database running on a Windows. By using the VSAM Redirector your
existing VSAM programs doesn't require any revisions.
a DB2 database running on a Windows. By using the VSAM Redirector your
existing VSAM programs doesn't require any revisions.
The VSAM Redirector makes use of a so called VSAM Data Access Exit (VDA).
This exit intercepts all VSAM requests. The exit gets control at OPEN, CLOSE,
and for all data requests (GET, PUT, INSERT,...).
This exit intercepts all VSAM requests. The exit gets control at OPEN, CLOSE,
and for all data requests (GET, PUT, INSERT,...).
A configuration table is used to define which VSAM files are being "redirected".
The VSAM Redirector Client on VSE forwards all requests against a redirected file
to the VSAM Redirector Server which then handles the request.
The VSAM Redirector Client on VSE forwards all requests against a redirected file
to the VSAM Redirector Server which then handles the request.
The VSAM Redirector Server is a Java application. It can run on any Java
enabled platform.
enabled platform.