troubleshooting

I’m new to database management and I’m facing a really annoying issue that I’d like some help on. I’m trying to connect to a remote Oracle database located on a different machine. I keep getting the error “ORA-02019: connection description for remote database not found” whenever I try to establish a connection. I’ve checked everything I can think of, but I can’t figure out what’s wrong.
Here’s the code I’m using to establish the connection:
“`java
String jdbcURL = “jdbc:oracle:thin:@remoteDB:1521:ORCL”;
String username = “myUsername”;
String password = “myPassword”;
Connection conn = null;
try {
Class.forName(“oracle.jdbc.driver.OracleDriver”);
conn = DriverManager.getConnection(jdbcURL, username, password);
System.out.println(“Connection established”);
} catch (SQLException ex) {
System.err.println(“SQLException: ” + ex.getMessage());
} catch (ClassNotFoundException ex) {
System.err.println(“ClassNotFoundException: ” + ex.getMessage());
} finally {
if (conn != null) {
try {
conn.close();
} catch (SQLException ex) {
System.err.println(“SQLException on closing connection: ” + ex.getMessage());
}
}
}
“`
I know the remote database exists and that the host machine is reachable from my local machine. I’ve also verified that the username and password are correct. Can someone help me figure out what I’m doing wrong? I would really appreciate it.