Hello,

I am trying to connect to Firebird with JayBird and DbVisualizer, but
when I try to connect I receive this message:

org.firebirdsql.jdbc.FBSQLException: Resource Exception. Unable to
complete network request to host "localhost".
Reason: Unable to complete network request to host "localhost".
at org.firebirdsql.jdbc.FBDataSource.getConnection(FBDataSource.java:107)
at org.firebirdsql.jdbc.FBDriver.connect(FBDriver.java:275)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
at
com.onseven.dbvis.wrapper.DriverManagerImpl.getConnection(DriverManagerImpl.java:37)
at com.onseven.dbvis.sql.Database.doConnect(Database.java:287)
at com.onseven.dbvis.sql.Database.access$000(Database.java:41)
at
com.onseven.dbvis.sql.Database$ConnectionCommand.execute(Database.java:1111)
at se.pureit.util.ThreadCommand.runExecute(ThreadCommand.java:163)
at se.pureit.util.ThreadCommand.run(ThreadCommand.java:143)
at java.lang.Thread.run(Thread.java:536)
at org.firebirdsql.gds.GDSException: Unable to complete network
request to host "localhost".
at org.firebirdsql.jgds.GDS_Impl.connect(GDS_Impl.java:1602)
at org.firebirdsql.jgds.GDS_Impl.isc_attach_database(GDS_Impl.java:276)
at org.firebirdsql.jgds.GDS_Impl.isc_attach_database(GDS_Impl.java:252)
at
org.firebirdsql.jca.FBManagedConnectionFactory.createDbHandle(FBManagedConnectionFactory.java:543)
at
org.firebirdsql.jca.FBManagedConnection.<init>(FBManagedConnection.java:109)
at
org.firebirdsql.jca.FBManagedConnectionFactory.createManagedConnection(FBManagedConnectionFactory.java:374)
at
org.firebirdsql.jca.FBStandAloneConnectionManager.allocateConnection(FBStandAloneConnectionManager.java:61)
at org.firebirdsql.jdbc.FBDataSource.getConnection(FBDataSource.java:104)
at org.firebirdsql.jdbc.FBDriver.connect(FBDriver.java:275)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
at
com.onseven.dbvis.wrapper.DriverManagerImpl.getConnection(DriverManagerImpl.java:37)
at com.onseven.dbvis.sql.Database.doConnect(Database.java:287)
at com.onseven.dbvis.sql.Database.access$000(Database.java:41)
at
com.onseven.dbvis.sql.Database$ConnectionCommand.execute(Database.java:1111)
at se.pureit.util.ThreadCommand.runExecute(ThreadCommand.java:163)
at se.pureit.util.ThreadCommand.run(ThreadCommand.java:143)
at java.lang.Thread.run(Thread.java:536)

Why this happen?

Thanks