NIC Speed Change on AIX

chdev -l en0 -a state=detach
chdev -l ent0 -a media_speed=1000_Full_Duplex
chdev -l en0 -a state=up
mkdev -l inet0

Command to find the HBA LUN connection details

cd /usr/DynamicLinkManager/bin
./dlnkmgr view -path
./dlnkmgr view -hba
./dlnkmgr view -lu

Step 1: Execute below command to find the offline path id
         
           /usr/DynamicLinkManager/bin/dlnkmgr view -lu
       

Step 2:  Find the offline pathId and execute below command.

          dlnkmgr online -pathid   <pathid>

Step 3:  Execute below command to verify if the path is back online
                       
           /usr/DynamicLinkManager/bin/dlnkmgr view -lu  (or)  /usr/DynamicLinkManager/bin/dlnkmgr view -path

How To fix the timeout Issues on AIX for a User

Put the following in /etc/profile otherwise add it to users $HOME/.profile

TMOUT=10800

(or)
export TMOUT=10800 (the session will be not be closed for 3 (3*60*60) hour)

TIMEOUT=10800 (for bash)
TMOUT=10800 (for ksh)

To Stop/Start the LPD(print Queue) in AIX

stopsrc -s qdaemon
startsrc -s qdaemon

Commnads to start the XManager in AIX

lslpp -l | grep -i x11
export DISPLAY=10.129.4.133:0
xterm
lslpp -l X11.base.lib
exit
ps -ef | grep -i x

Start And Stop A Oracle Cluster

Oracle Cluster Service is called as CRS.

The CRS has to be started using the binary called crsctl.

You have login with the Oracle ID and execute the command:

# crsctl start crs

# crsctl check crs

# crsctl stop crs

Successful start of crs can be seen with the check crs command:

Cluster Synchronization Services appears healthy
Cluster Ready Services appears healthy
Event Manager appears healthy

Uptime Explained

It shows you the system time in 24 hours format.

Numbers of Users Logged In.

Load Average.

While the sequence 0.25, 0.25, 0.19 represent for the past 1 minutes, 5 minutes and 15 minutes.