Some responses inline...
On 12/1/22 4:15 AM, fed wrote:
Hi,
As you suggested, the issue is the security manager, to be honest I am used
to java security manager, I read and tested a bit to understand how it
works.
My initial setup was server service in a dir, let’s say /dir1 and database
in another dir let’s say /dir2 so the dirs are distinct to each other.
Considering version 10.15.2.0 running the server without security manager
works:
java -jar derbyrun.jar server -noSecurityManager start
but reading from documentation I know it is not recommended and advisable
so I want to use the security manager.
So then I put my db dir inside the lib dir where derbyrun.jar and other
jars are, so something like lib/db/mydb and running it with
java -jar derbyrun.jar server start
and I can access the db even using relative path on jdbc url, db/mydb.
I am not used to derby in server mode, I read the documentation but sorry
it’s not all clear to me how to use it.
So from my test I suppose the recommended setup is to create a db dir
inside lib and put all the dbs inside it ? lib/db/db1, lib/db/db2 etc ?
right?
Typically, people separate code-bearing directories from data-bearing
directories. This makes it easier to upgrade to a new version of Derby
since the database is not located with the old version of Derby code.
Something like the following:
/Users/me/derbyInstallation/
/Users/me/derbyInstallation/derbyVersions/10.15.2.0
/Users/me/derbyInstallation/derbyHome
/Users/me/derbyInstallation/derbyHome/db1
/Users/me/derbyInstallation/derbyHome/db2
Just as note I tested again with 10.12.1.1 and I found that forcing the
security policy with the server template one (I suppose the default
behaviour is changed with the newer version) it behaves the same like
10.15.2.0, I used:
java
-Djava.security.policy=/tmp/db-derby-10.12.1.1-bin/demo/templates/server.policy
-jar derbyrun server start
Note that the supplied policies are just templates. You need to edit
them in order to use them. See
https://db.apache.org/derby/docs/10.15/security/csecjavasecurity.html
That is, at a minimum, you need to copy the template server policy (for
10.15.2.0 it's demo/templates/serverTemplate.policy) to some other
location and edit lines like the following...
grant codeBase "${derby.install.url}derbyshared.jar"
...replacing the ${derby.install.url} symbol with the url handle of your
Derby code library (file:///Users/me/derbyInstallation/10.15.2.0/) so
that the lines look like this:
grant codeBase"file:///Users/me/derbyInstallation/10.15.2.0/derbyshared.jar"
Hope this helps,
-Rick
Thanks for the help.
On Fri, 25 Nov 2022 at 21:02, Rick Hillegas<rick.hille...@gmail.com> wrote:
Check that your 10.15 classpath is correct. You need a couple more jar
files compared to previous releases. Your 10.15 server classpath must
contain the following jars:
derby.jar
derbyshared.jar
derbytools.jar
derbynet.jar
See
https://db.apache.org/derby/docs/10.15/adminguide/tadminappschangingyourclasspath.html
and
https://db.apache.org/derby/docs/10.15/publishedapi/org.apache.derby.server/module-summary.html
On 11/25/22 9:51 AM, Rick Hillegas wrote:
This indicates that the server is running with a Java SecurityManager
and that the policy file does not grant read permission on that
file--and probably all files in the database directory.
On 11/25/22 12:30 AM, fed wrote:
Hi,
testing with 10.15.2.0 from derby.log, server side, it complains about a
read permission on service.properties, some part of the file:
java.sql.SQLException: Impossibile avviare il database
'/home/user/db/' con
il caricatore di classi
jdk.internal.loader.ClassLoaders$AppClassLoader@277050dc. Per i
dettagli,
vedere l'eccezione successiva.
...
Caused by: java.security.AccessControlException: access denied
("java.io.FilePermission" "/home/user/db/service.properties" "read")
...
ERROR XBM0C: Privilegio mancante per l'operazione 'exists' sul file
'service.properties': access denied ("java.io.FilePermission"
"/home/user/db/service.properties" "read")
There are several errors like these ones but I have read permission
on this
file.
The user that starts the server is the same that owns the file, the
permissions on the file are 664.
As I said, same setup but using 10.12.1.1 for the server, I have no
problems.
Best Regards
-fed
On Thu, 24 Nov 2022 at 19:52, Rick Hillegas<rick.hille...@gmail.com>
wrote:
The SQLState indicates that the server was not able to boot the
database. Look in the server-side derby.log to see if there is a
detailed error message describing why the boot failed.
On 11/23/22 4:42 PM, fed wrote:
Hi,
Sorry for the late answer but I lost your reply.
Two tests:
I have a database updated to version 10.12.1.1, the server is running
with
the 10.12.1.1 too and the client is using 10.12.1.1 too, the
connection
is
OK, I can use this setup.
But another test:
still the same database updated to version 10.12.1.1, the server is
running
10.15.2.0 so a newer version and the client is using 10.12.1.1: I
have
problems in this case the client can't connect to the database with
this
error:
Caused by: org.apache.derby.client.am.SqlException: DERBY SQL error:
ERRORCODE: 40000, SQLSTATE: XJ040, SQLERRMC: Impossibile avviare il
database '/home/user/some_db_path/' con il caricatore di classi
jdk.internal.loader.ClassLoaders$AppClassLoader@277050dc. Per i
dettagli,
vedere l'eccezione successiva.::SQLSTATE: XBM0C
Thanks for the help
On Sun, 13 Nov 2022 at 15:26, Bryan Pendleton <
bpendleton.de...@gmail.com>
wrote:
I'm not aware of client-server version incompatibilities. Have you
done any experiments with different versions?
thanks,
bryan
On Thu, Nov 10, 2022 at 4:16 AM fed<fury...@gmail.com> wrote:
Hi,
using derby with network server setup is there any problem if the
server
and the client are running on different java versions?
Still on this, considering the database created/updated with the
apache
derby version that the client uses, is there any problem if the
server
will
use a newer version of apache derby?
Thanks for the help
-fed
