We tried to use 9000 MTU on the interconnect and were getting intermittent node evictions due to communication errors, for those of you running RAC, are you using jumbo frames on your network cards and switch(es)? We've had to back down to 1500 for reliability. HP DL380-G5, 64G of ram, 3 nodes. Just looking to see what everyone else is doing. thanks., joe _______________________________________ Joe Testa, Oracle Certified Professional Senior Consultant Data Engineering and Administration Nationwide Investments (Work) 614-677-1668 (Cell) 614-312-6715 Interested in helping out your marriage? Ask me about "Weekend to Remember" Dec 11-13, 2009 here in Columbus.