ComdocII Problema en las busquedas

Recién probé y me da el siguiente error:

log4j:ERROR No appenders could be found for category (comdocII.batch.IndexGenComdocII).
log4j:ERROR Please initialize the log4j system properly.
doWork: Error no esperado: The connection attempt failed because Exception: java.net.UnknownHostException:
Stack Trace:

java.net.UnknownHostException:
at java.net.ResolverCache.getHostByName(libgcj.so.70)
at java.net.InetAddress.getAllByName(libgcj.so.70)
at java.net.InetAddress.getByName(libgcj.so.70)
at java.net.Socket.(libgcj.so.70)
at org.postgresql.PG_Stream.(PG_Stream.java:40)
at org.postgresql.Connection.openConnection(Connection.java:131)
at org.postgresql.Driver.connect(Driver.java:122)
at java.sql.DriverManager.getConnection(libgcj.so.70)
at java.sql.DriverManager.getConnection(libgcj.so.70)
at comdocII.batch.IndexGenComdocII.doWork(IndexGenComdocII.java:83)
at comdocII.batch.IndexGenComdocII.main(IndexGenComdocII.java:301)
End of Stack Trace