Hi, I am a beginner in Solaris Environment Oracle. I Install Solaris 8 (X86) on a PC. Solaris 8 OS is running Smoothly on that pc and I also configure all its network related profile.i can connect that Solaris pc any where from my network. my system Configuration is RAM 128 Hard disk 8 GB My problem is when I installing Oracle 8i at Solaris 8(x86) is installing is ok And but at last when its making default database ORCL , 1 Creating Instance File is ok but during Creating of Data File near 50% of Creation it is showing Oracle Error ORA . 01034 :Oracle not Available After that I abort this Operation and again going to Create Database Through DBASSIST Icon but Same error is Coming . I tried to start database through dbstat then it is showing Error ORA . 27102 : out of Memory ORA . 01034 :Oracle not Available After that I increases my RAM size 256 MB But Still Facing Same above Error. I did this Also set shmsys:shminfo_shmmax=4294967295 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=100 set shmsys:shminfo_shmseg=10 set semsys:seminfo_semmni=100 set semsys:seminfo_semmsl=100 set semsys:seminfo_semmns=200 set semsys:seminfo_semopm=100 set semsys:seminfo_semvmx=32767 I am using GUI method to install Oracle 8i.Any Other configuration before Oracle 8i Please Let me Know. What is root.sh . This is also not executing from root user. After finishing 100% installation of one message is coming Please run root.sh which is present in the location /ORACLE_HOME/root.sh by logging in as root from another window before proceeding. After that Net8 Configuration and Database Configuration is coming.How can I go Root user without completing this process. Thanks for reading