I use Java with FB 1.5 and sometimes I get this error from the Jaybird:

GDS Exception. 335544569. Dynamic SQL Error
SQL error code = -901
invalid request handle

org.firebirdsql.jdbc.FBSQLException: GDS Exception. 335544569. Dynamic SQL Error
SQL error code = -901
invalid request handle
at com.sikgraf.dao.ParametroDAO.getParametroGeral(ParametroDAO.java:241)
at com.sikgraf.ui.OrcamentoOrdemServicoUI.init(OrcamentoOrdemServicoUI.java:158)
at com.sikgraf.ui.OrcamentoOrdemServicoUI.formComponentShown(OrcamentoOrdemServicoUI.java:7254)
at com.sikgraf.ui.OrcamentoOrdemServicoUI.access$10200(OrcamentoOrdemServicoUI.java:121)
at com.sikgraf.ui.OrcamentoOrdemServicoUI$17.componentShown(OrcamentoOrdemServicoUI.java:2851)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.Component.processComponentEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at com.sikgraf.lib.contextmenu.MyEventQueue.dispatchEvent(MyEventQueue.java:29)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
at org.firebirdsql.gds.GDSException: Dynamic SQL Error
SQL error code = -901
invalid request handle
at org.firebirdsql.jgds.GDS_Impl.readStatusVector(GDS_Impl.java:1816)
at org.firebirdsql.jgds.GDS_Impl.receiveResponse(GDS_Impl.java:1769)
at org.firebirdsql.jgds.GDS_Impl.isc_dsql_prepare(GDS_Impl.java:1267)
at org.firebirdsql.jca.FBManagedConnection.prepareSQL(FBManagedConnection.java:773)
at org.firebirdsql.jdbc.AbstractConnection.prepareSQL(AbstractConnection.java:958)
at org.firebirdsql.jdbc.AbstractStatement.prepareFixedStatement(AbstractStatement.java:1047)
at org.firebirdsql.jdbc.AbstractPreparedStatement.prepareFixedStatement(AbstractPreparedStatement.java:904)
at org.firebirdsql.jdbc.AbstractPreparedStatement.(AbstractPreparedStatement.java:86)
at org.firebirdsql.jdbc.FBPreparedStatement.(FBPreparedStatement.java:34)
at org.firebirdsql.jdbc.AbstractConnection.prepareStatement(AbstractConnection.java:701)
at org.firebirdsql.jdbc.AbstractConnection.prepareStatement(AbstractConnection.java:232)
at com.sikgraf.dao.ParametroDAO.getParametroGeral(ParametroDAO.java:227)
at com.sikgraf.ui.OrcamentoOrdemServicoUI.init(OrcamentoOrdemServicoUI.java:158)
at com.sikgraf.ui.OrcamentoOrdemServicoUI.formComponentShown(OrcamentoOrdemServicoUI.java:7254)
at com.sikgraf.ui.OrcamentoOrdemServicoUI.access$10200(OrcamentoOrdemServicoUI.java:121)
at com.sikgraf.ui.OrcamentoOrdemServicoUI$17.componentShown(OrcamentoOrdemServicoUI.java:2851)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.AWTEventMulticaster.componentShown(Unknown Source)
at java.awt.Component.processComponentEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at com.sikgraf.lib.contextmenu.MyEventQueue.dispatchEvent(MyEventQueue.java:29)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)




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