Tried to patch the newest GIRU (Grid Infrastructure Release Update) by grid, but it failed with No such file or directory (Exit code 255).
[grid@primary01 ~]$ opatchauto apply /sources/patches/33182768/ -analyze
OPatchauto session is initiated at Thu Jan 13 10:36:48 2022
/u01/app/19.0.0/grid/opatchautocfg/db/dbtmp/patchinginfo_primary01.properties (No such file or directory)
OPatchauto session completed at Thu Jan 13 10:36:49 2022
Time taken to complete the session 0 minute, 2 seconds
opatchauto bootstrapping failed with error code 255.
We also noticed error code 255 in the last line, which is usually related to permission problem.
In this case, it turns out that we should patch GIRU by root, not by grid.