Hi Bob,
It sounds like you need a better inter-process communication technique
than relying on Derby's database lock file (db.lck). Maybe someone on
this list can recommend a good resource for you to consult.
Glad to hear that your applications are playing nicely now.
-Rick
On 7/24/19
Hi Rick
Today I employed a delay in programs 2, 3,4, & 5 on both PCs [5 sec, 10sec,
15sec, & 20sec]
So Program 1 on both machines which uses currency-pair EURCAD start
immediately on the hour and hopefully finishes before 5 secs is up
Then Program 2 on both machines kicks off etc.
So far, I
The missing driver problem is almost certainly a classpath issue. What
are the classpaths for your applications?
On 7/23/19 7:23 PM, Bob M wrote:
Hi Rick
No - each program references a unique database (i.e. I have 5 different
databases)
My problem seems to be that
1) the first instance of
Hi Rick
No - each program references a unique database (i.e. I have 5 different
databases)
My problem seems to be that
1) the first instance of derby is kicked off
2) while it is operating a second instance is kicked off - and it is here
that the execution falters - either not finding a
I'm not sure what the nature of your problem is. Dual-booting a database
is a bad idea. See
http://db.apache.org/derby/docs/10.15/devguide/cdevdvlp20458.html. Are
multiple programs able to boot the same database simultaneously?
On 7/23/19 4:52 PM, Bob M wrote:
Hi Rick and Bryan
My problem
Hi Rick and Bryan
My problem still persists :(
I am trying to access Apache derby more than once at the same time
Is it possible to make more than one copy of derby and uniquely assign each
copy to a different program ?
Alternatively is it possible to add an inhibit which prevents a new task
Hi Rick and Bryan
Many, many thanks for all your good advice
Off to a very good start today...
My problem seems to have been a mismatch of derby.jar versions
And now, I know how to setup the derby.properties file and where to put it
:)
Thanks again - a great forum
Bob M
Dunedin
New
Yes, but not PATH, CLASSPATH. They are different environment variables.
On Fri, Jul 12, 2019 at 9:06 PM Bob M wrote:
>
> Bryan
>
> Environment Variables
> System Variables
> variable = Path
> value = %DERBY_INSTALL%\lib\derby.jar
>
> Is that what you are meaning?
>
> Bob M
>
>
>
> --
> Sent
Bryan
Environment Variables
System Variables
variable = Path
value = %DERBY_INSTALL%\lib\derby.jar
Is that what you are meaning?
Bob M
--
Sent from:
http://apache-database.10148.n7.nabble.com/Apache-Derby-Users-f95095.html
Hi Rick
I have had a good look around my C drive at "derby" files
I see the latest version of derby I installed was 10.14.2.0
However, the log example I sent you (above) talks about version 10.11.1.0
I also seem to have various length derby.jar files [my bad]
I have now ensured that all copies
The EmbeddedDriver is located in the derby.jar jar file, which MUST be
on the CLASSPATH of your program.
bryan
On Fri, Jul 12, 2019 at 3:52 PM Bob M wrote:
>
> Hi Rick
>
> Ignore the above message... I see I had two 'on the hour' attempts before
> the market closes for the weekend
>
> On the
Hi Rick
Ignore the above message... I see I had two 'on the hour' attempts before
the market closes for the weekend
On the first of these hours (after I added the 2 new properties)
In the logfile I use, I got the following message for each of the 5
different programs running simultaneously
Do you see any errors in derby.log? Can you attach it (after scrubbing
out any sensitive information)?
On 7/12/19 3:14 PM, Bob M wrote:
Hi Rick
added the two properties as suggested
the result was dramatic !
in each program I write several lines to a file
this file contains only the first
I don't know what that properties object represents. It looks like it is
configuring the attributes of a Derby connection. What you want to do is
something else. You want to configure the system properties which are
used for all embedded Derby databases used by your application. One way
to do
Hi Rick
added the two properties as suggested
the result was dramatic !
in each program I write several lines to a file
this file contains only the first of many lines that should have been
outputed - then nothing
what do I do now ?
Bob M
--
Sent from:
Thanks Rick
I have :-
props.put("user", "xxx");
props.put("password", "");
so do I add a couple of further props.put statements ?
I seem to have just one log file - here is an example where 2 of 5 different
databases are mentioned ???
(I am running 5 different programs at the same time)
On 7/11/19 10:15 PM, Bob M wrote:
Hi
I run several java programs at the same time on the same PC - once started
they action on the hour
Each program references a separate sql database - which it hopefully
connects to and updates some records
I have 2 intermitant issues:-
1) "can't find a
17 matches
Mail list logo
