first I have updated a sandbox from oracle 220.127.116.11 to 18.104.22.168 and everything works fine.
But now I have installed patchset 22.214.171.124 and with unchanged mountoptions (cio) for sapdata-dirs and FILESYSTEMIO_OPTIONS=SETALL (unchanged too) I can't access the datafiles on os level for online backup (without RMAN) while the database is running. Error "A system call received a parameter that is not valid" is shown when using cp or dd. If I shutdown the database I can copy the files (very slow, due to the cio-mount option)
Only when I set the FILESYSTEMIO_OPTIONS to ASYNCH it is possible to do access the files when the system is online.
Has anybody of you a hint to resolve this issue?
Thanx in advance ...