Mk_oracle fetches data, cmk-agent-ctl dump dont display anything

CMK version:
2.2p20
OS version:
Centos 7.7
Error message:
-none

Hey Folk,
I have a little Problem with my Agent, installed on Centos 7.

Agent is running fine, services running fine. The output of the user cmk-agent in /usr/lib/check_mk_agent/plugins/mk_oracle is fine.

also logged in as cmk-agent with bash and runned the /usr/bin/check_mk_agent went fine, also with -d:

+ for script in '[1-9]*/*'
+ is_valid_plugin '[1-9]*/*'
+ case "${1:?No plugin defined}" in
+ '[' -f '[1-9]*/*' ']'
+ true
+ main_async_parts
+ run_real_time_checks
+ RTC_PLUGINS=
+ . /etc/check_mk/real_time_checks.cfg
+ return
+ true
+ main_finalize_sync
+ finalize_profiling
+ :
+ '[' '' -gt 0 ']'
+ return 0

but when i run command cmk-agent-ctl dump the part of the plugin is missing.
Any help on this?