I am using Firebird 1.5 with Jaybird.
It works fine for a hundred of insert of records and then I get the
following error:

org.firebirdsql.jdbc.FBSQLException: Resource Exception. Unable to
complete network request to host "192.168.0.25".
Reason: Unable to complete network request to host "192.168.0.25".
at org.firebirdsql.jdbc.FBDataSource.getConnection(FBDataSource.java:106)
at org.firebirdsql.jdbc.FBDriver.connect(FBDriver.java:218)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.went.gac.db.Manager.getConnection(Manager.java:118)
at com.went.gac.db.ComuniManager.getConnection(ComuniManager.java:1111)
at com.went.gac.db.ComuniManager.save(ComuniManager.java:313)
at com.went.dbpop.test.Population.fillComuni(Population.java:369)
at com.went.dbpop.test.Population.fillData(Population.java:105)
at com.went.dbpop.test.Population.main(Population.java:100)
at org.firebirdsql.gds.GDSException: Unable to complete network
request to host "192.168.0.25".
at org.firebirdsql.jgds.GDS_Impl.connect(GDS_Impl.java:1660)
at org.firebirdsql.jgds.GDS_Impl.isc_attach_database(GDS_Impl.java:282)
at org.firebirdsql.jgds.GDS_Impl.isc_attach_database(GDS_Impl.java:258)
at
org.firebirdsql.jca.FBManagedConnectionFactory.createDbHandle(FBManagedConnectionFactory.java:540)
at
org.firebirdsql.jca.FBManagedConnection.<init>(FBManagedConnection.java:88)
at
org.firebirdsql.jca.FBManagedConnectionFactory.createManagedConnection(FBManagedConnectionFactory.java:366)
at
org.firebirdsql.jca.FBStandAloneConnectionManager.allocateConnection(FBStandAloneConnectionManager.java:60)
at org.firebirdsql.jdbc.FBDataSource.getConnection(FBDataSource.java:103)
at org.firebirdsql.jdbc.FBDriver.connect(FBDriver.java:218)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.went.gac.db.Manager.getConnection(Manager.java:118)
at com.went.gac.db.ComuniManager.getConnection(ComuniManager.java:1111)
at com.went.gac.db.ComuniManager.save(ComuniManager.java:313)
at com.went.dbpop.test.Population.fillComuni(Population.java:369)
at com.went.dbpop.test.Population.fillData(Population.java:105)
at com.went.dbpop.test.Population.main(Population.java:100)

Could you please let me know how to solve this problem?
Thanks a lot
Angelo