I recommend looking at the MOS note titled "Oracle Database on Unix AIX,HP-UX,Linux,Mac OS X,Solaris,Tru64 Unix Operating Systems Installation and Configuration Requirements Quick Reference (8.0.5 to 11.2) [ID 169706.1]" In there you'll find the mother of all compatibility matrices that for 11.2 states: Linux x86_64 EM64T AMD64 OS <https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&doctype=BULLE TIN&id=169706.1#swapmemos> (See Note 225710.1 <https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&id=225710.1> for supported kernels) and Note 265262.1 <https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&id=265262.1> for "Things to know about Linux" o RHEL4,OEL4 - update 7 or greater o RHEL5,OEL5 - 5.2 or greater o SLES10 - Kernel 2.6.16.21-0.8 or greater o SLES11 - Kernel 2.6.27.19-5 or greater Harel safra From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Peter Hitchman Sent: Tuesday, June 15, 2010 4:15 PM To: oracle-l Subject: Fwd: CRS-0210: Could not find resource 'ora.LISTENER.lsnr error when upgrading to 11.2 grid infrastructure It has not been clear to me if the OS needs to be upgraded to Update 7 or not for Oracle 11.2, my searches on this and requests for confirmation from Oracle have been inconclusive!.