hi, i can't connect to hsqldb, please save my family!

I'm using hsqldb 1.7.1 and ojb 1.0.

My db is Almayer, this is my <jdbc-connection-descriptor>:

<jdbc-connection-descriptor
        jcd-alias="default"
        default-connection="true"
        platform="Hsqldb" 
        jdbc-level="3.0"
        driver="org.hsqldb.jdbcDriver" 
        protocol="jdbc"
        subprotocol="hsqldb:hsql"
        dbalias="//localhost/almayer"
        username="sa"
        password=""
        eager-release="false"
        batch-mode="false"
        useAutoCommit="0"
        ignoreAutoCommitExceptions="false">

 and this is the error (from tomcat's log):

at 
org.apache.ojb.broker.accesslayer.ConnectionFactoryPooledImpl.getConnectionFromPool(Unknown
 Source)
at 
org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.lookupConnection(Unknown
 Source)
at org.apache.ojb.broker.accesslayer.ConnectionManagerImpl.getConnection(Unknown 
Source)
        ... 50 more
Caused by: org.apache.ojb.broker.accesslayer.LookupException: Error getting Connection 
from DriverManager with url (jdbc:hsqldb:hsql://localhost/almayer) and driver 
(org.hsqldb.jdbcDriver)
at 
org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.newConnectionFromDriverManager(Unknown
 Source)
at 
org.apache.ojb.broker.accesslayer.ConnectionFactoryPooledImpl$ConPoolFactory.makeObject(Unknown
 Source)
at 
org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:816)
... 53 more
Caused by: java.sql.SQLException: Connection is broken: localhost/almayer
at org.hsqldb.Trace.getError(Unknown Source)
at org.hsqldb.Trace.error(Unknown Source)
at org.hsqldb.jdbcConnection.reconnectHSQL(Unknown Source)
at org.hsqldb.jdbcConnection.openHSQL(Unknown Source)
at org.hsqldb.jdbcConnection.<init>(Unknown Source)
at org.hsqldb.jdbcDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
... 56 more

That's all. Can somebody help me?
Thanks in advance
Gianluca



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