Steps for preventing Oracle SQL Developer sessions from being killed

In general when we leave the database connection opened for a while in oracle sql developer, It will throw a "connection timeout" message when we tried to run a query next time.
We have to reconnect the connection for running the query.

To keep the database connection alive in sql developer please follow the below steps:

For Oracle SQL Developer 3 Versions:

1. Download oracle.sqldeveloper.keepalive.jar from this link " https://454e35d1-a-62cb3a1a-s-sites.googlegroups.com/site/keepaliveext/oracle.sqldeveloper.keepalive.jar?attachauth=ANoY7cp8U9ULxrRvTu3b-96lNNGvQAyh_LQ_kRfPmskJS0-qDvLfvoEeyd1jVFkbTRsso4wMuH65pMFVrXECLpUsFXj7D9wxGbYZrBffFy6FNAVRpCVy-j5vJ9h84DdMl_tCBGHaI3_GJzjx2OwutMk2b-bdCvOV_lgSy7_Kb3J2T2CjCR9hg9o_Bk_3f5roc86Vr6XxkncVkpZ87XsphHtEmZveLTVzdHcqf1_a9QEKY77koOcbkKU%3D&attredirects=0"

2. Copy the downloaded jar file to the below location

%SQLDEVELOPER_HOME%\sqldeveloper\extensions

3. Open sql developer and right click on a connection and go to Keep-Alive and select Active

4. Enter the user and password details of the connection if it is not already connected

5. We will get a success keep alive message

6. Now check again for the session time out issue.

For Oracle SQL Developer 4 Versions:

1. Navigate to %SQLDEVELOPER_HOME%\sqldeveloper\bin

2. Open sqldeveloper.conf file

3. Add " AddVMOption -Doracle.net.disableOob=true" to the file and save it.

4. Open sqldeveloper-nondebug.conf file

5. Add " AddVMOption -Doracle.net.disableOob=true" to the file and save it.

6. Open sql developer and connect to the database and check for session time out