Saves modifying tnsnames.ora: create database link mylink connect to myuser identified by mypassword using ‘//myserver/mydatabase’ ; Note that passwords are case sensitive from 11g. This means 10g->11g links need uppercase passwords.
Read More Easy connect database linkshttp://learnwithme11g.wordpress.com/2010/03/19/11gr2-rac-shared-storage-preparationocfs-part2/ Also very good is http://www.oracledba.org/index.html /etc/init.d/o2cb enable (on both nodes) mkfs.ocfs2 -L “RAC8LUN” /dev/mapper/RAC8LUN1p1 mkfs.ocfs2 -L “RAC8Q” /dev/mapper/RAC8Qp1 vi /etc/fstab mkdir /CRS_DATA mkdir /ORA_DATA mount /dev/mapper/RAC8LUN1p1 mount /dev/mapper/RAC8Qp1
Read More RAC OCFS on 11gR2BIOS build date should correspond to approximate manufacture date for a server, is given with (as root): dmidecode | egrep -i ‘date|product’
Read More Server age with dmidecode|grep Date