Changing Timezone Settings on Oracle Database Servers

Looking for updates if any for 12c.

Rick Miners' Oracle Blog

Twice now in the past month, I have run across some clients that are wanting to change the timezone of their database due to a server relocation. Both cases ended up being a bit similar, one a single instance and the other on Exadata. Since I had to lookup how to do it the seconds time, I thought I would blog about it. Here’s the info on how to view the timezone settings and how to change them.

These settings shown were valid for DB 11.2.0.2 and above on Redhat/Oracle Linux 6.

OS Settings

Look at /etc/localtime to see the timezone setting for the server. The
setting should be set to an entry in the /usr/share/zoneinfo directory/subdirectory.

Grid Timezone Setting

Config File in Grid Home

The TZ entry in $GRID_HOME/crs/install/s_crsconfig__env.txt the timezone entry for the Grid Home; hence, the ASM and listener.

Grid Infrastructure Settings

If TZ is set via…

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