请问一下以下错误如何解决?
weepp 2006-01-06 11:47:15 at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at java.sql.DriverManager.getConnection(DriverManager.java:543)
at java.sql.DriverManager.getConnection(DriverManager.java:194)
at database.Database.getDatabaseInstance(Database.java:70)
at database.Database.<init>(Database.java:82)
at database.