We have upgraded the application with ojdbc6 to ojdbc11 with JDK 17. Getting the below exception, though there is no functional impact. c3p0 version is 0.9.5.5. With ojdbc6 we don't see this issue.
OpenJDK Runtime Environment OpenLogic-OpenJDK (build 21.0.4+7-adhoc.Administrator.jdk21u) OpenJDK 64-Bit Server VM OpenLogic-OpenJDK (build 21.0.4+7-adhoc.Administrator.jdk21u, mixed mode) connection ...