- OASN
- See origin application schedule number (OASN)
- Object Management Group (OMG)
- A non-profit consortium whose purpose is to promote object-oriented
technology and the standardization of that technology. The Object Management
Group was formed to help reduce the complexity, lower the costs, and hasten
the introduction of new software applications.
- object module
- A compiled
or assembled program, the output of a compiler or assembler. Before execution,
object modules must be processed by the linkage editor to produce a load module.
See source program, load module (LMOD), compiler, assembler, linkage editor.
- Object Request Broker
(ORB)
- A CORBA system component that acts as an intermediary between
the client and server applications. Both client and server platforms require
an ORB; each is tailored for a specific environment, but support common CORBA
protocols and IDL.
- OIDCARD
- A small card with a magnetic stripe
encoded with unique characters and used to verify the identity of a terminal
operator to RACF.
- OLDS
- See online log data set (OLDS).
- OMG
- See Object Management Group (OMG).
- online
- Pertaining to a user's access to a computer
via a terminal.
- online log data set (OLDS)
- A data set on direct access storage that contains the log records written
by DBCTL. When the current OLDS is full, DBCTL continues logging to a further
available OLDS.
- open key storage
- In MVS storage protection,
storage with storage key 9. called key-9 storage. In open key storage, fetch
and store operations are permitted, regardless of the access key. CICS user-key
storage is in MVS open key storage.
- open system
- A system
that implements specified common standards across different computer vendors.
Implementing open systems standards for communications allows computers from
different vendors to communicate with each other.
- Open Systems Interconnection
- The interconnection of open systems
in accordance with specific standards of the International Organization for
Standardization (ISO).
- operating system (OS)
- A collection
of system programs that control the overall operation of a computer system.
- Operating System/2 (OS/2)
- An operating system for IBM Personal
System/2 (PS/2) and IBM-compatible personal computers.
- Operating
system/400 (OS/400)
- An operating system for the IBM Application
System/400 (AS/400) machines. OS/400 includes intergrated transaction processing
facilities.
- Operating System/Virtual Storage (OS/VS)
- A compatible extension
of the IBM System/360 Operating System that supports relocation hardware and
the extended control facilities of System/360. OS/VS is the first step in
an evolving sequence of which the following steps are MVS/370, MVS/XA;, and
MVS/ESA.
- operator identification (OPID)
- A 1-to-3 character code that is
assigned to each operator and is stored in the operator's terminal entry in
the CICS terminal control table (TCTTE) when the operator signs on. In CICS
Transaction Server, an operator identification code defined in the CICS segment
of a RACF user profile, using the OPIDENT operand of the ADDUSER command.
If a release of RACF earlier than RACF 1.9 is in use, opids must be defined
in the signon table (SNT). In CICS/VSE, an operator identification code defined
in the CICS signon table (SNT) using the OPIDENT parameter of the DFHSNT TYPE=ENTRY
macro.
- OPID
- See operator identification (opid OPID).
- OPTB
- See output parameter text block (OPTB)
- ORB
- See Object Request Broker (ORB).
- orderly disconnection
- An option for disconnecting CICS from DBCTL using the CDBC transaction.
It allows all existing DBCTL tasks to be completed before CICS is disconnected
from DBCTL. See also immediate disconnection.
- origin
application schedule number (OASN)
- An IMS recovery element in
an external subsystem (for example, DB2). The OASN is equivalent to the unit-of-recovery
ID in the CICS recovery token. It is coupled with the IMS ID to become the
recovery token for LUWs in external subsystems.
- orphan lock
- An orphan
lock is an RLS lock that is held by VSAM RLS but unknown to any CICS region.
An RLS lock becomes an orphan lock if it is acquired from VSAM by a CICS region
that fails before it can log it. A VSAM interface enables CICS, during an
emergency restart, to detect the existence of these locks and release them.
- OS
- See operating system (OS).
- OS/400
- See Operating system/400.
- OSAM
- See overflow sequential access method (OSAM).
- OS/VS
- See Operating System/Virtual Storage (OS/VS)
- outage
- A failure of the CICS
system, or planned down time for maintenance or upgrade.
- outboard formatting
- A technique for reducing the amount of line traffic between a
host processor and an attached subsystem. The reduction is achieved by sending
only variable data across the network. This data is combined with constant
data by a program within the subsystem. The formatted data can then be displayed.
- outbound
- (1) In communication, pertaining to data that is sent to
the network. See also inbound.
- (2) In FEPI and CICS,
data sent by a program to somewhere else. From the point-of-view of the back-end
system, this data is inbound or input from a terminal.
- output parameter text block (OPTB)
- In CICS/VSE, in VSE/POWER's
spool-access support, information that is contained in an output queue record
if a * $$ LST or * $$ PUN statement includes any user-defined keywords that
have been defined for autostart.
- overflow
sequential access method (OSAM)
- In IMS, a data management access
method that handles data overflow from ISAM.
- overlapped keystroking
- A means of eliminating the delay experienced by operators when
performing repetitive data entry tasks by using two BMS partitions to display
two copies of the same data entry panel. After filling the first panel, the
operator presses ENTER to transmit the data and moves into the second partition.
While CICS is processing the input from the first partition, the operator
can continue to input data in the second partition.
- overlay map
- A technique used with BMS to achieve simulated windows. See also canned map and base map.
- overseer
- A CICS program
used with XRF, that runs in its own address space and provides status information
about the active and alternate CICS systems. You can use it to automate a
restart of failed regions.
- owner
- The user or group that creates a profile,
or is named the owner of a profile. The owner can modify, list, or delete
the profile.
[[ Contents Previous Page | Next Page Index ]]