问题1

virtuoso:   ERROR: The OA2.2 library directory (/cadence/IC618/share/oa/lib/linux_rhel50_gcc48x_64/opt) does not seem to exist.
virtuoso:    INFO: You have OA_UNSUPPORTED_PLAT set to "linux_rhel50_gcc48x" in your environment:
virtuoso:          check that the value provided correspond to a valid OA platform.
virtuoso:          If this value is correct, check your OA installation.
virtuoso:    INFO: Note that OpenAccess (OA) requires running the Configure phase.
virtuoso:          See the "OpenAccess Installation and Configuration Guide" before
virtuoso:          you complete the configuration step. This manual is included with
virtuoso:          the Cadence product documentation.

解决办法
redhat
lsb_release -a
然后安装文件