ejc-connect fails frequently

[huangfeiyu]

When connect to oracle database by ejc-connect, it fails frequently. Here's the message:

error in process filter: Sync nREPL request timed out (op eval code (require 'ejc-sql.deps-resolver) (do (set! *print-length* 100000)
                              (ejc-sql.deps-resolver/get-dependeces-files-list  '[[com.oracle.jdbc/ojdbc8 "12.2.0.1"]]))) after 60 secs

Sometimes the connection can be established quickly, sometimes, it take longer, sometime, it fails. It has nothing to with with network performance, when I use other tools, the connection can always be quickly established. Is this a known issue?