Here booth logs compared.
Good log
2022-02-02 13:50:38.359 [Warn ] Data 'C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1' is too old, age is '58' seconds
2022-02-02 13:50:38.360 restarting async plugin 'C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1'
2022-02-02 13:50:38.362 Async Thread for C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1 is to be started
2022-02-02 13:50:38.362 restarted thread for plugin 'C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1'
2022-02-02 13:50:38.363 [Trace] Exec app 'powershell.exe -NoLogo -NoProfile -ExecutionPolicy Bypass -File "C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1"', mode [0]
2022-02-02 13:50:40.349 perf: In [1986] milliseconds process 'C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1' pid:[5984] SUCCEDED - generated [10746] bytes of data in [5] blocks
2022-02-02 13:50:40.349 [Trace] Thread OFF: 'C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1'
Bad log
2022-02-01 23:04:46.407 Plugin 'C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1' is async with age:0 timeout:300 retry:3
2022-02-01 23:04:46.482 Plugin 'C:\ProgramData\checkmk\agent\plugins\mk_oracle.ps1' is async with age:0 timeout:300 retry:3
In the bad log is no “restarting …” for the Oracle plugin.