This page tries to answer some frequently asked questions.
Database Specific
Oracle
Solution Options: Try if any of the following works:
Add the following property 'autoReconnect' with the value 'true' to your connection properties in XESame;
Make sure that the user you are using to connect has a long enough 'idle time' for the connection;
In case the above fails, you might want to follow the following steps from
this blog post.
Go to Configuration & Migration Tool
Start the database Configuration Assistant
Select radio button —Configure Data base options in database
Select your database—e.g. Oracle or pspl
Select —– shared server mode (in step 6 of 6)