Internal ports now working. Listener is not up error!

[xploreraj]

Few weeks back the ports 8080 and others were working fine for Apache Tomcat. Recently, Oracle and Tomcat are not able to communicate with database and local web server respectively. Now these ports are not being used by any other programs.

Plus I have also noticed that the system32\drivers\etc\hosts file can not be saved after modification as the error pops up as:

file is opened in some other application

see the error for my jdbc program, and you may get some idea, over why the ports are being blocked:


Exception in thread "main" java.sql.SQLException: Got minus one from a read call
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:199)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:480)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:413)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:508)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:510)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at FirstProgram.main(FirstProgram.java:17)
Caused by: oracle.net.ns.NetException: Got minus one from a read call
at oracle.net.ns.Packet.receive(Packet.java:243)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:259)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:966)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292)
... 7 more

[Raymond]

Are you able to change the port maybe to 8081 and see if it worked?
If yes, then you have to drill down what is using that port.
If no, then it is either Apache or Oracle's problem.