Hi @tosch,
Oracle database is version 19.14, no ASM/RAC is configured.
What do you mean under oracle section. Find below mk_oracle output.
[root@cm-rtdb-p-02:~]>export MK_CONFDIR=/etc/check_mk
[root@cm-rtdb-p-02:~]>/usr/lib/check_mk_agent/plugins/mk_oracle -t
---login----------------------------------------------------------------
Operating System: Linux
ORACLE_HOME (oratab): /u01/app/oracle/product/19.0.0.0/db
Logincheck to Instance: cmrtdb
Version: 19.0
Login ok User: CHECKMK on cm-rtdb-p-02 Instance cmrtdb
SYNC_SECTIONS: instance sessions logswitches undostat recovery_area processes recovery_status longactivesessions dataguard_stats performance locks systemparameter
ASYNC_SECTIONS: tablespaces rman jobs resumable iostats
------------------------------------------------------------------------