This section provides troubleshooting information for Oracle Virtual Desktop Clients.
The Maximum Transmission Unit (MTU) is the maximum packet size for connections. By default, the MTU is set to 1500 bytes.
If you experience problems when using a Virtual Private Network (VPN) or a wide area network (WAN), the MTU setting might be too high for your network.
To diagnose the correct MTU setting for your network, use the ping command to find the largest packet size that can be transmitted successfully.
On Windows platforms:
pingserver-name-lbytes-f
where server-namebytes
On Mac OS X platforms:
pingserver-name-sbytes-D
where server-namebytes
On Linux platforms:
pingserver-name-sbytes
where server-namebytes
To calculate the MTU setting, add eight bytes to the packet size.
To set the MTU, either change the setting on the Network tab or run the following command:
ovdc --mtubytesserver-name
where bytesserver-name
Screen rendering problems, such as slow screen redraw or blocks of black pixels, can occur if the Maximum Transmission Unit (MTU) setting is too high for the network.
The MTU is the maximum packet size for connections. By default, the MTU is set to 1500 bytes.
See Section 18.5.1, “Connection Problems When Using a VPN or WAN” for details of how to diagnose the correct MTU setting for your network.
To help you to diagnose problems with Oracle Virtual Desktop Clients, you can increase the logging level.
Table 18.5, “Oracle Virtual Desktop Client Logging Levels” shows the available logging levels.
Table 18.5. Oracle Virtual Desktop Client Logging Levels
Level | Description |
|---|---|
0 | No logging |
1 | Critical messages |
2 | Warnings |
3 | Informational messages |
By default, the logging level is 0, which
sets logging to off.
The logging level is cumulative. For example, the maximum
logging level 3 includes informational
messages, warnings, and critical messages.
To set the logging level, run the following command:
ovdc --logging-levelnumserver-name
where numserver-name
For example, to record warnings and critical messages for a
connection to the sr-1.example.com Sun Ray
server, run the following command:
ovdc --logging-level 2 sr-1.example.com
By default, log messages are written to a
.log text file on the client computer. The
.log file is named after the profile used.
For example, the log file for the default profile is called
default.log.
The default location of the log file depends on the installation platform, as follows:
Microsoft Windows XP platforms –
C:\Documents and Settings\username\Application Data\Oracle Virtual Desktop
Client\profilename.log
Microsoft Windows Vista and Microsoft Windows 7
platforms – C:\Users\username\AppData\Roaming\Oracle Virtual
Desktop Client\profilename.log
Mac OS X platforms – $HOME/.Oracle
Virtual Desktop Client/profilename.log
Linux platforms – $HOME/.Oracle
Virtual Desktop Client/profilename.log
If you use the --profile command option to
specify the path to a profile, the log file is created
automatically in the same directory as the profile. In the
following example, log messages are written to the
C:\tempfullscreen.log file.
ovdc --profile C:\temp\fullscreen
You can use the --logfile command option to
change the name and location of the log file. If the path to
the log file contains spaces, surround the path with straight
quotation marks (").
The following example uses the default profile and writes log
messages to the mylog.txt file in the
default location.
ovdc --logfile mylog.txt
The following example uses the default profile and writes log
messages to the C:\temp\logfile.txt file.
ovdc --logfile C:\temp\logfile.txt
The following example uses the
C:\profiles\fullscreen profile and writes
log messages to the C:\temp\logfile.txt
file.
ovdc --profile C:\profiles\fullscreen --logfile C:\temp\logfile.txt
The following example uses the
C:\profiles\fullscreen profile and writes
log messages to the mylog.txt file in the
default location.
ovdc --profile C:\profiles\fullscreen --logfile mylog.txt
The Sun Ray Software uses on-screen displays (OSD) to display the status of a connection. The OSD can be used to diagnose connection problems with Oracle Virtual Desktop Clients.
See the Sun Ray Client Troubleshooting Icons chapter in the Administration Guide for more details about the available icons and messages.