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Code-page conversion enhancements
The function to convert data between
EBCDIC or ASCII and Unicode, in
either direction, is now added to the
existing CICS Transaction Server
ASCIII and EBCDIC code-page
conversions. This support uses
IBM
z/OS
®
conversion services.
The code-page conversion capability
applies to either UTF-8 or UTF-16, and
support is also provided for conversion
between these forms of Unicode.
Improved performance and enterprise
management
The enterprise-management focus in
CICS Transaction Server, Version 3.1
has been on providing a simple,
flexible, intuitive and comprehensive
Web user interface (WUI) from which
all the CICS regions and associated
resources in the enterprise can be
managed efficiently. IBM has
enhanced support for the open
transaction environment (OTE) in
CICS Transaction Server Version 3.1,
extended API threadsafety to include
the EXEC CICS WEB API and improved
the interface for C/C++ applications
to boost performance.
Enhanced open transaction environment
CICS Transaction Server, Version 3.1
extends the use of the OTE by
providing support for COBOL, PL/I,
Assembler and non-XPLink C/C++
OPENAPI application programs. The
program runs on its own task control
block (TCB) from the start. OPENAPI
requires the application to be coded
to threadsafe standards. Using
nonthreadsafe CICS commands can
cause a switch to the quasi-reentrant
TCB (QR TCB), so that CICS can switch
back to the OTE TCB before returning
control to the program.
The main benefit of this support is
that it allows application workloads
to be moved from a single QR TCB
onto multiple TCBs, enabling better
utilization of machine resources to
achieve better throughput.
Threadsafe Web commands
All EXEC CICS Web API commands
have been made threadsafe. These
commands include WEB READ, WEB
WRITE, WEB SEND, WEB RECEIVE,
WEB RETRIEVE, WEB STARTBROWSE,
WEB READNEXT, WEB ENDBROWSE,
WEB EXTRACT, EXTRACT WEB,
EXTRACT TCPIP and EXTRACT
CERTIFICATE. This enhancement
removes the requirement for CICS
Transaction Server to return to the QR
TCB to run these commands. As a
result, applications (both Java and
non-Java) that use these commands
should be able to obtain the performance
improvements resulting from reduced
TCB switching. Also threadsafe are the
new Web API commands that support
outbound HTTP, such as WEB OPEN,
WEB CLOSE, WEB CONVERSE and WEB
PARSE URL.
An OTE delivers improved transaction performance.
QR TCB
QR TCBL8 TCB L8 TCB
Program start
Program start
EXEC CICS
EXEC CICS
EXEC CICS
EXEC CICS
EXEC CICS
EXEC CICS
EXEC CICS
EXEC CICS
EXEC CICS
EXEC CICS
EXEC SQL
EXEC SQL
EXEC SQL
EXEC SQL
EXEC SQL
EXEC SQL
EXEC SQL
EXEC SQL
threadsafe
threadsafe
threadsafe
threadsafe
nonthreadsafe
nonthreadsafe
nonthreadsafe
nonthreadsafe
nonthreadsafe
nonthreadsafe
EXEC RETURN
EXEC RETURN
The program for this transaction is
defined THREADSAFE, API= OPENAPI.
The program for this transaction is
defined THREADSAFE, API= CICSAPI.