Re: How to restrict external connections

[Craig L Russell]

Hi Néstor Boscán,




Craig

On Sep 10, 2007, at 10:51 PM, Néstor Boscán wrote:

Yes, only one process at a time can access the Derby database files for any particular database. There's no inter-process mechanism to prevent corruption if multiple processes were to access the files. There is a mechanism to prevent multiple processes from accessing the database.

Hi Mamta thanks for the answer.

So basically Derby will only be up in one JVM at a time. Correct?

Regards,

Néstor Boscán

De: Mamta Satoor [mailto:[EMAIL PROTECTED]
Enviado el: Tuesday, September 11, 2007 1:13 AM
Para: Derby Discussion
Asunto: Re: How to restrict external connections

Néstor,



HTH,
Mamta

On 9/10/07, Néstor Boscán <[EMAIL PROTECTED]> wrote:
Hi Kristian

Thanks for the answer.


like ij?

Regards,

Néstor Boscán

-----Mensaje original-----
De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Enviado el: Monday, September 10, 2007 4:27 AM
Para: Derby Discussion
Asunto: Re: How to restrict external connections

Néstor Boscán wrote:
> Hi
>

> only want the JVM to be able to connect to the Derby database and no
> other external processes.

Hello,

Unless I have misunderstood, sounds like you simply want to use Derby

access the database.


unset) or an absolute path.

Did that answer you question, or do you have any further requirements?


regards,
--
Kristian


>
> Regards,
>
> Néstor Boscán

If a tool like ij is started in a new JVM, then it will not be able to connect to an embedded database which has been started by a different JVM. So this means that if I open the database using the EmbeddedDriver driver no one can access the database from an outside connection?. Includiing tools > Is there a way to restrict external connection to a Derby Database?. I embedded. This is done by using org.apache.derby.jdbc.EmbeddedDriver and specifying the connection URL as 'jdbc:derby:myDatabase [;create=true;...]'. By default, no network server will be started and only the JVM is able to Note that 'myDatabase' can point to a database by using either a relative path (relative to derby.system.home , or current working directory if it is

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:[EMAIL PROTECTED]
P.S. A good JDO? O, Gasp!

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