[DatabaseMetaData.getProcedures][1](). [DatabaseMetaData.getFunctions][2](). We need to support observing available procedures. Now I see we can select from the _func system space. [1]: https://docs.oracle.com/javase/8/docs/api/java/sql/DatabaseMetaData.html#getProcedures-java.lang.String-java.lang.String-java.lang.String- [2]: https://docs.oracle.com/javase/8/docs/api/java/sql/DatabaseMetaData.html#getFunctions-java.lang.String-java.lang.String-java.lang.String-