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12.4. DBI Environment Variables
The following environment
variables are defined for use with DBI:
- DBI_DSN
-
The data source value to use if none is specified with the
connect method.
- DBI_DRIVER
-
The driver to use if none is specified with the
connect method.
- DBI_USER
-
The username to use if none is specified with the
connect method.
- DBI_PASS
-
The password to use if none is specified with the
connect method. (For security purposes, this
environment variable should not be set except for testing.)
- DBI_TRACE
-
Enables tracing behavior as with the trace method.
DBI_TRACE can be set to any of the following values:
- 0
-
Disables the trace
- 1
-
Traces the execution of the DBI
- 2
-
Outputs detailed call trace information including parameters and
return values
- filename
-
Appends trace information to the specified file; the trace level is
set to 2.
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| 12.3. DBI Methods |  | VI. XML and SOAP |
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