Hi guys,i'm new to oracle 11g rac,i've installed my first rac successfully a few days ago,it contains two instances,which functioned normally at that time.today i startup these two instances,rac1 function normally,but rac2 has meet a problem:i order "crsctl check crs",it shows"CRS-4535: Cannot communicate with Cluster Ready Services",and the backgroundprocess dosen't contain crsd;then i check the logs about crsd,crsg.log shows "OCR context init failure.Error: PROC-44: Error in network address and interface operations",and crsdOUT.log shows "CRSD exiting: Could not init OCR"...i've not found a perfect answer to solve this problem yet,so i ask for advice here.thank you sincerely~