Tips

ssh client and sftp not working for users other than root
Solu: Check the permission for /opt/freeware. If others does not have read and execute permissoins, sftp may fail. Change the permissions.

chmod 755 /opt/freeware

After AIX fresh installation, not able to login into the system or no login prompt

This problem may come if terminal / cable is not the right one. We need to change the attributes of tty0 device to get over this issue.

Reboot the system in Single user mode using the installation CD

 smit tty --> Change / Show Characteristics of a TTY 

 select tty0
 At the end of 'STTY attributes for RUN time' field, add ",clocal"
 In 'STTY attributes for LOGIN' filed, add ",clocal"
 Select 'Apply change to DATABASE only' to "yes"


    OR 

 Run the following command
 # chdev  -l 'tty0' -a runmodes='hupcl,cread,brkint,icrnl,opost,tab3,onlcr,isig,icanon,\n  
   echo,echoe,echok,echoctl,echoke,imaxbel,iexten,clocal' \n
   -a logmodes='hupcl,cread,echoe,cs8,clocal' '-P'

Reboot the system.

After AIX 5.2 fresh installation, system was not finding any SAN storages
Fileset devices.fcp.disk was not installed on the system. Fileset installed and system rebooted.

To kill all the process using filesystem /oracle

 fuser -cuxk /oracle