grid 11.2.0.2 之后的版本（包含11.2.0.2），时区的配置文件是写
在 $GRID_HOME/crs/install/s_crsconfig_<nodename>_env.txt 这个文件中的
Grid Time Zone Setting
Once OS default timezone is changed, make sure:
1. For 11.2.0.1, shell environment variable TZ is set correctly for grid user and root.
2. For 11.2.0.2 and above, TZ entry in $GRID_HOME/crs/install/s_crsconfig_<nodename>_env.txt sets to correct time zone.