java.sql.SQLException: database is locked
        at org.sqlite.DB.throwex(DB.java:288)
        at org.sqlite.NativeDB.prepare(NativeDB.java:0)
        at org.sqlite.DB.prepare(DB.java:114)
        at org.sqlite.Stmt.executeQuery(Stmt.java:89)
        at org.sqlite.MetaData.getTables(MetaData.java:615)
Caused: org.netbeans.modules.db.metadata.model.api.MetadataException: java.sql.SQLException: database is locked
        at org.netbeans.modules.db.metadata.model.jdbc.JDBCSchema.createTables(JDBCSchema.java:166)
        at org.netbeans.modules.db.metadata.model.jdbc.JDBCSchema.initTables(JDBCSchema.java:217)
        at org.netbeans.modules.db.metadata.model.jdbc.JDBCSchema.getTables(JDBCSchema.java:99)
        at org.netbeans.modules.db.metadata.model.api.Schema.getTables(Schema.java:101)
        at org.netbeans.modules.db.explorer.node.TableNodeProvider$1.run(TableNodeProvider.java:104)
        at org.netbeans.modules.db.explorer.node.TableNodeProvider$1.run(TableNodeProvider.java:100)
Caused: org.netbeans.modules.db.metadata.model.api.MetadataModelException: org.netbeans.modules.db.metadata.model.api.MetadataException: java.sql.SQLException: database is locked
        at org.netbeans.modules.db.metadata.model.JDBCConnMetadataModel.runReadAction(JDBCConnMetadataModel.java:99)
        at org.netbeans.modules.db.metadata.model.api.MetadataModel.runReadAction(MetadataModel.java:89)
        at org.netbeans.modules.db.explorer.node.TableNodeProvider.initialize(TableNodeProvider.java:99)
        at org.netbeans.api.db.explorer.node.NodeProvider.getNodes(NodeProvider.java:103)
        at org.netbeans.modules.db.explorer.node.NodeRegistry.getNodes(NodeRegistry.java:149)
        at org.netbeans.api.db.explorer.node.ChildNodeFactory.createKeys(ChildNodeFactory.java:104)
        at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:164)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1084)