ODIS displays
a wealth of information about the current status of
the CICS system and also displays VSE, VTAM
and VSE DL/I status information. Both detail and summary displays
are provided, as well as analytic displays used for problem determination.
ODIS also has an optional feature called "ODISTRAK" through
which ODIS records major CICS statistics and periodically writes
them to a VSAM file. Batch programs analyze and report on the recorded
data, and also permit archiving of it to tape.
The following specific CICS and operating system tables and control
blocks are formatted on-line by ODIS:
 CICS
|
|
VSE |
• Automatic Initiate Descriptor
(AID) |
|
• Channel Queue |
• Common System Area (CSA) |
|
• Communication Regions |
• Destination Control Table (DCT) |
|
• Logical Unit Block (LUB) |
• Enqueued Resources Partition |
|
• Information Block (PIB) |
• File Control Table (FCT) |
|
• Physical Unit Block (PUB) |
• Interval Control Elements (ICE) |
|
• Storage Management Control Block |
• Page Allocation Map (PAM) |
|
• (SMCB) |
• Processing Program Table (PPT) |
|
• System Communication Region |
• Program Control Table (PCT) |
|
• VTAM Buffer Pool Storage |
• And suspended |
|
• DL/I On-line Control Blocks |
• Terminal Control Table (TCT) |
|
• Task Status - active |
• Temporary Storage |
|
|
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One of the ODIS screens
displays "problems" which
exist or have occurred in the running CICS system, including such
conditions as storage
violations, short-on-storage, tasks waiting
for VSAM strings or buffers, etc. This function may be run unattended,
reporting exceptional conditions as they occur to the system console,
or a terminal.
ODIS also provides a hexadecimal and character format memory
display facility by address or by name of storage area. In addition
to the tables and control blocks listed above, more than 20 areas
may be requested by name, e.g.: CICS Common Work Area (CWA), VSE
Logical Transient Area (LTA), MVS Link Pad Directory Area (LPAD),
etc.
Memory
may also be altered using ODIS. This function may be restricted.
ODIS
includes screens and fields oriented to determining operational or
performance problems in the CICS system, and comes with a 100+ page
manual containing usage information, description of the tables and
fields accessed, and contains valuable information and advice on
CICS and operating system operation in general, as well as ways to
use ODIS to improve and control the systems. With most users
very dependent on the availability of CICS, problems can cause a
significant drop in company productivity. ODIS identifies problems
before they become irresolvable. ODIS also provides assistance
in managing a CICS system so it performs as well as possible, and
with a minimum of bottlenecks. Some sections of the manual can be
used in conjunction with the software to observe system variables
and operation characteristics, change them, and review the results.
In general, the ODIS manual and software are designed to provide
an informal but practical education in the complex CICS area, both
for experienced and relatively inexperienced personnel.
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CICS
ODIS also provides a detailed display of individual
terminals and another more condensed terminal display, which shows
only in/out of service status.
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ODISTRAK
"ODISTRAK" is an optional feature
that permits ODIS to record major CICS statistics for processing
later in batch mode. Data is recorded and reported for the following:
• Destinations (Transient Data activity)
• Files
• Programs
• System (various events such as program checks, memory
usage, max task reached, etc.)
• Terminals
• Transactions
• Watchdog (ODIS periodic problem detection)
The recorded data
may also be archived to tape for historical reporting purposes.
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