AIX

Hello.
Our application is running on AIX box located in NSW , Australia. As DST starts on Oct 28th - Do you know IF AIX boxes have auto updates of day light saving times? IF not , how to do it? IF yes, where can I verify it?

Thank you!

Yes But will need setup depending on where you are


Have a look in /etc/environment
You should find someting like TZ=GMT0BST,M3.5.0,M10.5.0

There is a table to follow But Check with your local IBM about what this should be


Then you can chnage your settings by using
smitty chtz_date

Hello - I am located in NSW - Sydney.

The entry what I see is TZ=EET-10EETDT,M10.5.0,M3.5.0

Do you think any modifications still required as I could not understand what it means :-(

If you have set the timezone correctly ("print - $TZ") it changes atuomatically.

There are several timezones with their daylight savings already predefined, but you can use your own if nothing suits you. The command to change the timezone setting is "chtz", but you can use a SMIT panel for that: "System environments"/"Change / Show Date and Time" ("smitty chtz_date").

For instance have a server in Germany, where the DST starts on the last Sunday of March and ends at the last Sunday of October. The TZ variable reads:

NFT-1DFT-2:00:00,M3.5.0/02:00:00,M10.5.0/03:00:00

That means:

NFT-1DFT is the timezones name, "Norway (to) France, -1h DFT"

M3.5.0/02:00:00 The DST starts on the "5th" Sunday of month 3, that is the respective last sunday in the month March at 2 am

M10.5.0/03:00:00 The DST ends on the "5th" Sunday of Month 10, the last Sunday of October, at 3 am.

DST is achieved by adding one 1 h at 2 am onthe last Sunday in March, so the clock will go from 2:00 to 3:01 and having the clock stand still on the last Sunday in October, so at 2:00 am the clock is stopped and starts working one hour later.