It is essential to understand the nature of the problem before you
can evaluate different solutions. Within the context of
CICS®
VT there are several issues with VSAM, the main ones being:
- It is difficult to share the data across different processes and
maintain data integrity.
- There are architectural limits that impose a maximum size on a
VSAM file.
- Ad hoc access to VSAM files by knowledge workers or decision support users
is difficult. This impacts the ability of your end users to support
rapidly changing business trends.
- There are no data mining tools for VSAM.
There are many applications for which these issues do not
apply, and these applications might not be candidates for
CICS VT. However, other applications are
disadvantaged by some or all of these factors.
CICS
VT is one of a number of alternative migration options.