[kepler-dev] Kepler won't start for me...

[Shawn Bowers]

On Fri, 22 Sep 2006, Edward A. Lee wrote:

> (BTW, this sort of experience has convinced me that this idea of loading
> all the actors at startup time was a really bad idea, and in fact could
> ultimately make Kepler unusable... Can I talk you into going back to the
> Ptolemy II model of loading actors only when the libraries are opened?).

The reason we are doing the "full load" is because we want to be able to
search over the actors -- and Ptolemy provides no support for this without
loading the actors.  In fact, it is even worse than this, since we also
can't use the current Ptolemy infrastructure/classes to load "proxies" of
actors ...  I think the main reason why it takes so long, and also the
reason why we haven't implemented a better solution, has actually more to
do with the excessive XML writing/reading/processing going on in how
Ptolemy loads/processes actors.

-shawn

>
> Any suggestions for starting Kepler?  I tried deleting the lock
> file, but the OS won't let me, telling me some other application
> is using it.  I suspect the other application is Kepler, left
> over from a previous failed attempt to start it...
>
> Edward
>
> Caused by: java.sql.SQLException: The database is already in use by
> another process: org.hsqldb.NIOLockFile at c06705ff[file =C:\Documents
> and Settings\eal\.kepler\cache\cachedata\hsqldb.lck, exists=true,
> locked=false, valid=false, fl =null]: java.lang.Exception: The
> process cannot access the file because another process has locked a
> portion of the file : C:\Documents and
> Settings\eal\.kepler\cache\cachedata\hsqldb.lck
>          at org.hsqldb.jdbc.jdbcUtil.sqlException(Unknown Source)
>          at org.hsqldb.jdbc.jdbcConnection.<init>(Unknown Source)
>          at org.hsqldb.jdbcDriver.getConnection(Unknown Source)
>          at org.hsqldb.jdbcDriver.connect(Unknown Source)
>          at java.sql.DriverManager.getConnection(DriverManager.java:525)
>          at java.sql.DriverManager.getConnection(DriverManager.java:171)
>          at
> org.ecoinformatics.util.DBConnectionFactory.getDBConnection(DBConnectionFactory.java:91)
>          at
> org.ecoinformatics.util.DBConnectionFactory.getDBConnection(DBConnectionFactory.java:73)
>          at org.kepler.gui.KeplerInitializer.initializeSyste
> ....
>
> ------------
> Edward A. Lee
> Professor, Chair of EECS
> 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770
> phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845
> eal at eecs.Berkeley.EDU, http://ptolemy.eecs.berkeley.edu/~eal
>
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>