Can two realm work co-operatively on the same ACFS filesystems ？

/acfs3 is an ACFS in RAC environment.
I want user root and oracle to have write access privilege on /acfs3/dircd from 8:00 to 23:00:
So i made the following rule settings and add them to a realm:
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* Settings for oracle
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--create rule and ruleset for oracle
acfsutil sec rule create rule_read_oracle1 -m /acfs3 -t username oracle -o ALLOW
acfsutil sec rule create rule_time_oracle1 -m /acfs3 -t time 08:00:00,23:00:00 -o ALLOW
acfsutil sec ruleset create rule_set_oracle2 -m /acfs3
acfsutil sec ruleset edit rule_set_oracle2 -m /acfs3 -a rule_read_oracle1,rule_time_oracle1 -o ALL_TRUE