Mainframe Connectivity
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Transcript of Mainframe Connectivity
ViaSQL
Mainframe Connectivity
Viaserv, Inc. Mainframe Connectivity – 2
Access to ViaSQL Access Server
ViaSQL Direct and ViaSQL Integrator TCP/IP
– easier to set up– less configurable
APPC (LU6.2 or SNA)– can be complicated– more performance potential
One ViaSQL Access Server transaction can accept both connection types
Viaserv, Inc. Mainframe Connectivity – 3
TCP/IP Requirements
VSE – Connectivity Systems Inc. TCP/IP stack
ViaSQL Direct ODBC platform– Windows 95/98/NT/2000– native TCP/IP stack
ViaSQL Direct JDBC platform– any JAVA platform– native TCP/IP stack
ViaSQL Integrator (Gateway) platform– Windows NT/2000– native TCP/IP stack
Viaserv, Inc. Mainframe Connectivity – 4
ViaSQL Access Server TCP/IP Configuration
T C P / I P P A R A M E T E R S------------------------------------
Listener Transaction ID MDILDedicated Terminal ID TCP*Initialization String 00
--- Port Assignments -Listening ServicePort # Transid5501 MDI5502 MDI2000000000000000(and more -- up to 30 ports)
Viaserv, Inc. Mainframe Connectivity – 5
ViaSQL Listener Transaction
Installed automatically with ViaSQL Access Server (if TCP/IP was specified)
Long-running CICS transaction Listens on assigned ports, initiates CICS service transaction,
passes connection on, returns to listening
Viaserv, Inc. Mainframe Connectivity – 6
ViaSQL Listener Transaction
Typically started and stopped with ViaSQL Access Server start/stop transactions
Must be running for TCP/IP connectivity
Viaserv, Inc. Mainframe Connectivity – 7
Dedicated Terminal ID
CICS terminals dedicated to ViaSQL– must be sequential– defined in TCT table– limits the number of concurrent connections
Viaserv, Inc. Mainframe Connectivity – 8
Other TCP/IP Parameters
Initialization string– Relates listener to tcp/ip partition. Default is 00
Listener port #– port numbers assigned to ViaSQL listener
Service transid– CICS transaction(s) assigned to ViaSQL Access Server
Viaserv, Inc. Mainframe Connectivity – 9
TCP/IP Setup — Other End
Standard Windows 95/98/NT/2000 setup– specify IP address of VSE platform– specify port number assigned to desired ViaSQL Access Server
transaction Same for:
– ViaSQL Direct ODBC Driver– ViaSQL Direct JDBC Driver– ViaSQL Gateway
Viaserv, Inc. Mainframe Connectivity – 10
TCP/IP Resources
ViaSQL TCP/IP Guidelines– with TCP/IP Configuration Table
Should be able to ping
Viaserv, Inc. Mainframe Connectivity – 11
APPC Requirements
VSE– many VTAM and CICS definitions
Windows 95/98/NT/2000– Microsoft SNA Server configured to match VSE setup– MS SNA Server client required on each machine if using ViaSQL Direct
ODBC Driver.
Viaserv, Inc. Mainframe Connectivity – 12
APPC Resources
ViaSQL APPC Guidelines– with APPC Configuration Table
APPCTEST– tests APPC connectivity outside the ViaSQL software
• APPCTEST transaction in CICS• supplied client program run from ViaSQL Gateway or
ViaSQL Direct platform– helps isolate problems