QUESTION:
1. Can I make a call to CICS using C today on an AIX box?
Example: C program written the C compiler, using the
the risc version of CICS?How about the next version?
2. Can I call stored procedures from DB6000 Today? Next release?
If I can call stored procedures with either, can the stored
procedures invoke COBOL, C?
3. If 2 is possible, Can I then invoke EXEC CICS calls from
COBOL? C?
PS: Reference to good manuals is appreciated.
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A: 1. Currently the only supported way to interact with
CICS/6000 from outside a CICS program is via the External
Presentation Interface.
The EPI is an API which allows non-CICS application
programs to appear to the CICS system as one or more
standard 3270 terminals. The non-CICS application may start
CICS transactions and send and receive standard 3270 data
streams to those transactions.
The EPI API consists of the following functions:
CICS_EpiAddTerminal
CICS_EpiATIState
CICS_EpiDelTerminal
CICS_EpiGetEvent
CICS_EpiGetSysError
CICS_EpiInitialize
CICS_EpiListSystems
CICS_EpiReply
CICS_EpiSenseCode
CICS_EpiStartTran
CICS_EpiTerminate.
EPI programming is described in the CICS/6000 application
programming guide, SC33-0814-00.
There has been a statement of direction that CICS/6000
will support the common client. This will support an
External Call Interface allowing non-CICS applications to
run CICS programs.
A prototype of the ECI for CICS/6000 is available from
the TXPPACS tools disk in Hursley:
EXEC TOOLS SENDTO WINVMB TOOLS TXPPACS GET CD62 PACKAGE
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A: DB2/6000: please answer questions 2 and 3 concerning stored
procedures in DB2/6000.
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A: Yes, you can call stored procedures from DB2/6000 now. Stored
procedures, also know as DARI (Database Application Remote Interface),
reside at the server. The DARI procedure is invoked by a client call.
The DARI procedure will access the database, complete its designated
processing, and return a completion code or small result set to the
client. A client application that invokes a stored procedure can
minimize the network communication between the client and the server.
The stored procedure acts as a local application to the database manager
where the "target" data resides. In addition to reduced network
communication, an application may benefit by using DARI procedures to
perform functions that are only available at the server. For example,
the FORCE USER API is available on servers, but is not available on
clients. If such a function is desired from the client side, a DARI
procedure could be utilized.
DARI usage includes the capability to write code in C, COBOL and FORTRAN.
You can write client applications in any supported language. The
following advanced programming techniques are required: address
manipulation, dynamic memory allocation and understanding SQLDA.
For more details regarding the coding and use of DARI procedures,
investigate education in application programming or consult the
DATABASE 2 AIX/6000 Programming Guide, Publication Number SC09-1572-00.
Especially see pages 125 - 171, Chapter 6, "Stored Procedures and
Record Blocking". Call 1-800-426-8322, Extension 330 for a list of
the DB2 classes and schedules.
If the third question regarding invoking EXEC CICS was not answered
by the CICS 6000 response above, please let me know and I will forward
it to them.
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This item was created from library item Q675570 FFBSP
Additional search words:
AIX ALTERNATE CICS DB2 FFBSP INDEX IX JAN95 OZNEW RISCDB2 RISCSYSTEM
SOFTWARE 6000
WWQA: ITEM: RTA000051975 ITEM: RTA000051975
Dated: 01/1995 Category: RISCDB2
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