Since the Oracle Disk Manager feature uses regular files, you can access these files as regular VxFS files as soon as the feature is disabled.
To disable the Oracle Disk Manager feature in an Oracle instance
For Oracle 11g, enter:
# rm ${ORACLE_HOME}/lib/libodm11.so # ln -s ${ORACLE_HOME}/lib/libodmd11.so \ ${ORACLE_HOME}/lib/libodm11.so
For Oracle 10g, enter:
# rm ${ORACLE_HOME}/lib/libodm10.so # ln -s ${ORACLE_HOME}/lib/libodmd10.so \ ${ORACLE_HOME}/lib/libodm10.so