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The Trace File
The following example shows the gw.log entries for the conversation that is
used for a direct connection. In contrast with the distributed connection in
the previous example, this example has only one connect record and one
disconnect record.
1996-05-02
(Unix user
TERRYH
1996-05-02
(Unix user
14:10:32.221934 PID= 8279 Informix user ”terryh”
terryh) connected to RDB INFORMIXSOFTWARE as user
14:10:50.602366 PID= 8279 Informix user ”terryh”
terryh) disconnected from RDB INFORMIXSOFTWARE
For more information about conversations, refer to “Distributed Queries” on
page 1-9.
The Trace File
The GWDEBUG environment variable controls trace-event logging. You can
set DBTEMP to specify a directory for the trace file. For more information
about environment variables, refer to the Informix Guide to SQL: Reference.
Trace-file data is written in the code set of the client application.
To turn on trace-event logging, set the GWDEBUG environment variable
either in the Gateway daemon (gwd) environment before you start the
daemon, or in the environment-configuration file at any time.
Using Trace Logging
The following table indicates the values and meaning for the GWDEBUG
environment variable settings for the Gateway.
Value
Meaning
1
Enables the Gateway to trace the sqlca that the application server
returns.
2
Enables the Gateway to trace the sqlda that the application serve returns.
3
Enables the Gateway to trace the distributed data-management (DDM)
commands that are sent to the application server, the DDM commands
that are received from the application server, and the sqlda that the
application server returns.
(1 of 2)
Programming with the Gateway 6-75