Data mining — Getting error information

This section provides information on how Intelligent Miner® handles error messages and on how you can define the error file and the error message table (EMT).

If an error occurs during a mining run, an error message is displayed.

With the table function IDMMX.DM_GETERRORS(), you can retrieve a complete list of error messages.

Some messages are truncated by DB2®. To see the complete untruncated message, you can check the idmMxError.log file or use the IDMMX.DM_GETERRORS() functions.

Errors are logged by default in the file idmMxError.log together with identifiers and time stamps.

On UNIX operating systems, the file resides in the directory /tmp.
On Windows operating systems, the file resides in the temp directory, which is either:
- The path specified by the TMP environment variable
- The path specified by the TEMP environment variable if TMP is not defined
- The Windows directory if neither TMP or TEMP is defined
If you intend to use the environment variable TMP or TEMP, it must be set in the environment of the DB2 engine. Scoring services run as part of the DB2 engine. Set the environment variable as a system variable.

When the file gets too large, you must delete it.

You can change the error file name and directory by setting the environment variable IDM_MX_ERRORFILE to the name of an alternative error file. The file name must be given as an absolute path name. If you want to prevent Intelligent Miner from writing to an error file, set the environment variable IDM_MX_ERRORFILE to NONE. The environment variable must be set in the environment of the DB2 engine. On UNIX platforms, add IDM_MX_ERRORFILE to the DB2 registry variable DB2ENVLIST and restart DB2 to activate the changes. See the DB2 Administration Guide to get information on the DB2ENVLIST registry variable. On Windows platforms, IDM_MX_ERRORFILE must be set as a system variable.