Oracle Issues and Getaways.
  if after oracle upgrade the databse doesnt come up   cd $ORACLE_HOME/rdbms/admin  sqlplus "/as sysdba"  SQL>startup upgrade;  SQL>@catupgrd.sql  SQL>shutdown immediate;  SQL>startup;  SQL>@utlrp.sql   Mario Alcaide   ####################################  Offending key in /.ssh/known_hosts:8   RSA host key for 10.204.4.53 has changed and you have requested strict checking.  Host key verification failed.    Solution #1: Remove keys   remove the entery from /.ssh/known_hosts and try connecting again.   1.Open up /etc/ssh/sshd_config and set "PermitRootLogin" to "yes". (Your ISP probably set it to "without-password")  2.You also need to restart the sshd process.  This is done by killing the existing one (use ps -aux|grep sshd to get the process ID, then use kill to zap it), then restarting /usr/sbin/sshd    ####################################################  By default, Fedora Core 6 systems come with an old Java software installed...