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JES2 initialization options described in Chapter 1 of the
OS/390 JES2 Initialization
and Tuning Guide
.
10.2.2.1 The JES2 Procedure
Similar to the POWSTRT procedure, the JES2 member of SYS1.PROCLIB is used
to initialize JES2. (It must be in SYS1.PROCLIB, not in any other procedure
library.) You must tailor the JES2 proc to include your JES2 load libraries,
parameter members, procedure libraries, and other options. For the specific
requirements of the JES2 procedure, see Chapter 1 in the
JES2 Init & Tuning
Guide
.
10.2.3 Tailoring JES2
You can customize JES2 for your installation by setting JES2 initialization
parameters, issuing JES2 operator commands, or using JES2 supplied exits.
10.2.3.1 JES2 Initialization Parameters
Similar to the VSE/POWER tables assembled with generation macros, JES2 uses
a series of initialization parameters to tailor the system. Whereas the POWER
macros are assembled and linked into the POWER phases, the JES2 initialization
parameters are placed in one or more sequential or partitioned data sets, and
pointed to by the JES2 procedure.
See Table 17 on page 226 for a comparison of POWER macros to JES2
initialization parameters.
10.2.3.2 JES2 Operator Commands
Practically everything you can specify in JES2 initialization parameters can also
be specified or changed through JES2 operator commands.
See
JES2 Commands
for details.
See 10.4.3, “POWER-JES2 Command Equivalences” on page 231 for a
comparison of POWER exits to JES2 exits.
10.2.3.3 JES2 Installation Exits
You can also customize JES2 through any of 49 supplied IBM exits, or modify the
JES2 code directly through source modifications or VER/REP statements in the
JES2 init deck.
See
JES2 Exits
and
JES2 Job Related Exits
for details.
See 10.4.2, “Exit Comparisons” on page 230 for a comparison of POWER exits to
JES2 exits.
10.3 JES2-POWER Functional Comparison
Charts follow which compare differences between POWER and JES2 in the
following areas:
•
Input Services
•
Job Scheduling
•
Output Services
•
Interface to VSE/ICCF or TSO
•
Remote Job Entry (RJE)
Chapter 10. POWER and JES2 211