Appendix A. Troubleshooting Web Gateway and Device Management 161
Common Web Gateway and Device Management
problems
Here are some typical problems when using the Web Gateway and Device
Management components.
Problems with starting the Web Gateway
The following are possible problems and solutions with starting the Web
Gateway:
򐂰
Problem:The following message appears in the DMS_stdout.log file when
Web Gateway is starting in WebSphere Application Server:
java.lang.ClassCastException
Solution: The wrong JDBC driver is being used. Web Gateway requires the
JDBC 2.0 driver. You must configure DB2 to use the JDBC 2.0 driver and
reinstall Web Gateway with the JDBC driver home installation parameter set
to the JDBC 2.0 driver.
򐂰
Problem: The following message appears in the DMS_stdout.log file when
Web Gateway is starting in the WebSphere Application Server:
DYM2794E: Failed to create the database connection pool.
COM.ibm.db2.jdbc.DB2Exception: [IBM][JDBC Driver] CLI0616E Error opening
socket. SQLSTATE=08S01
Solution: Ensure that DB2 is started and that the DB2 client is configured
correctly.
򐂰
Problem: When starting Web Gateway in the WebSphere Application Server,
the following message appears in the DMS_stdout.log file:
DYM2718E: An error occurred while trying to initialize the Policy Director
environment.
Solution: This message occurs when the IBM Tivoli Access Manager Java
Runtime Environment is not installed and configured correctly on the Web
Gateway server. Verify that the IBM Tivoli Access Manager Java Runtime
Environment is installed on the Web Gateway server.
򐂰
Problem: When starting Web Gateway on the WebSphere Application Server,
the following message appears in the DMS_stdout.log file:
DYM2719E: An error occurred while trying to create a Policy Director
context.
Solution: The Web Gateway server is not configured correctly. Open the
twgConfig.properties file to verify that the PD_ADMIN_USERID and
PD_ADMIN_PW values are correct. To verify these values, log on to the
162 PDA Management with IBM Tivoli Configuration Manager
pdadmin command-line utility on the IBM Tivoli Access Manager Server. Then
type the following:
pdadmin –a sec_master –p password
This message also occurs when the IBM Tivoli Access Manager Java
Runtime Environment is not installed and configured correctly on the Web
Gateway Server.
򐂰
Problem: When starting Web Gateway on the WebSphere Application Server,
the following message appears in the DMS_stdout.log file.
com.tivoli.pd.jutil.PDExceptionjava.io.FileNotFoundException:
pd_config_file (No such file or directory)
Solution: The Web Gateway server is not configured correctly. Open the
twgConfig.properties file to verify that the PD_CONFIG_FILE value exists on
the Web Gateway Server.
򐂰
Problem: Unable to log in to Web Gateway Server.
Solution: Do the following:
Use the IP address instead of the host name for the Web Gateway Server
to check if it is a DNS issue.
For a Palm OS device, check the settings in the config.ini used to create
the Config.PDB file. You can regenerate a corrected Config.PDB and
install it on the Palm device or, alternatively, modify the settings on the
device.
If you are using a IBM Access Manager WebSEAL Server, make sure to
include the WebSEAL_hostname and junction_name in the URL for the
server.
򐂰 HTTP 400 error when connecting. Check name resolution. Make sure the
host PC can contact the Web Gateway server.
Conduit returns an error/HTTP error code 500. Make sure the service IBM
WebSphere Admin Server 4.0 is started.
Could not connect to the server. Check the proxy setting and port number.
The port number should be 80.
HTTP error 404. Check the servlet name.
Palm OS device using network/modem connection when device is
attached to host PC with a cradle. Use AttachmentOption=2 to specify that
the Palm device should always use the cradle connection. A new
Config.PDB file will need to be generated and copied to the Palm device.

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