Mike Patterson writes:
>I would like to know if I remove the 2
>entries in /etc/services for the JDBC listener if that
>will prevent external java applications (one not
>running on the same physical machine as the database
>server) from connecting via JDBC.
It depends on which JDBC driver the Java programs are using.
If your programs are using the Type 2 driver,
COM.ibm.db2.jdbc.app.DB2Driver,
then they will be able to connect without the db2jd server process running.
The Type 2 driver uses the same inbound TCP port as any other CLI client,
typically port 50000.
Disabling the port used by db2jd (or simply killing the db2jd process)
will only block connections from Java programs that use the Type 3 JDBC
driver,
COM.ibm.db2.jdbc.net.DB2Driver, the thin driver which does not require
the installation of the DB2 client.
If it is your intent to block remote Java programs only, then disabling the
db2jd process will accomplish that goal, but only if all local Java
programs use the Type 2 driver
and all remote Java programs only use the Type 3 exclusively. If a remote
program uses
the Type 2 driver, then shutting down db2jd will not block connections from
those programs.
Hope this helps,
Fred Sobotka
Database Administrator
IBM Certified Solutions Expert - DB2 UDB V7.1 Administration for Unix,
Windows, and OS/2
CollegeNET, Inc.
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