How can I keep Oracle SQL Developer from closing the DB connection?

Question

Is there any way to keep Oracle SQL Developer from closing my DB connections, or to increase the timeout? Sometimes during a long-running query SQL Dev will just close the conne

Answer 1

our DBA seems to have found a solution to this:

2.2. If there is a firewall present between the OC4J instance & the Database The firewall might drop inactive jdbc connections to the database server. However, the OC4J instance cannot detect that the firewall has timed out the connection to the database. Oracle Net can be configured with Dead Connection Detection (SQLNET.EXPIRE_TIME) to workaround this problem. Set EXPIRE_TIME on the database server to a value less than the firewall connection timeout so that DCD keeps the connection to the database alive. See Note 151972.1 "Dead Connection Detection (DCD) Explained". Since this is a setting configured on the database server, not on the midtier, it will apply for all database connections (OCI and thin JDBC). Alternative solutions: - Disable or increase the idle timeout parameter of the firewall. or - Configure the TCP Keepalive time setting on the database and on midtier servers to a value less than the firewall connection timeout. After setting the TCP Keepalive time, the machines will send repeatedly a null packet after the minutes specified to keep the connections alive. As the packet is sent every time inside the firewall idle timeout, the connection will not get closed.