derby.drda.traceDirectory=<directory for tracing files>
Alternatively,
while the Network Server is running, enter the following command
to set the trace directory:java org.apache.derby.drda.NetworkServerControl traceDirectory
<directory for tracing files> [-h <hostname>] [-p <portnumber>]
You need to specify only the directory where the tracing files will
reside. The names of the tracing files are determined by the system. If you
do not set a trace directory, the tracing files will be placed in derby.system.home.
The Network Server will attempt to create the trace directory
(and any parent directories) if they do not exist.
This will require that the Java security policy for
derbynet.jar
permits verification of the existence of the named trace directory
and all necessary parent directories.
For each directory created, the policy must allow
permission java.io.FilePermission "<directory>", "read,write";
and for the trace directory itself, the policy must allow
permission java.io.FilePermission "<tracedirectory>${/}-", "write";
See for
information about customizing the Network Server's security policy.