I'm just curious about something. Does anybody use SYMBOLICREATE to create
aliases so that the actual DSN can automatically change based on a static
system symbol? I'm thinking about things such as version numbers or z/OS
&SYSNAME. Does anybody even have system relative DSNs? I'm thinking perhaps
like SYS2.&SYSNAME..PARMLIB with an alias of SYS2.SYSTEM.PARMLIB so that a job
can simply refer to SYS2.SYSTEM.PARMLIB and get the correct, system-specific,
PARMLIB. I'm trying to determine if it is actually useful. My manager likes for
product libraries to have the release/maintenance as a node in the DSN. But
this means that we need to make JCL changes when we upgrade. Or we need to put
the executable libraries in the LNKLST. We currently do the latter, but I don't
really care for it for "low use" products. But is it better to create a normal
ALIAS without the maintenance level and simply reDEFINE the alias when I
upgrade? Rather than change the IEASYMnn member of PARMLIB. Or just do it like
we do now and require JCL changes so that the JCL itself documents which
version/maintenance level is desired?
This is coming up, in my mind only so far, because I plan to use UNIX sysplex
sharing and use something similar. I plan to have a system-specific version of
then /usr/local subdirectory. In order to simplify things, I'll use a symbolic
link with $SYSSYMR like:
cd /usr
mkdir SY1-local
mkdir SY2-local
ln -s '$SYSSYMR/&SYSNAME.-local' system-local
and then in /etc/profile, have:
export PATH=${PATH}:/usr/system-local/bin:/usr/local/bin
so that a system local version of a program will override the "global"
/usr/local version.
John McKown
Systems Engineer IV
IT
Administrative Services Group
HealthMarkets(r)
9151 Boulevard 26 * N. Richland Hills * TX 76010
(817) 255-3225 phone *
[email protected] * www.HealthMarkets.com
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