Setting the time zone before upgrading

 

If you have a previous release of the i5/OS^® operating system installed and are upgrading to i5/OS V5R3, or later, you need to set the time zone before your system is upgraded to the new release. This is the preferred method because your time zone can be set correctly as soon as the upgrade is complete.

To set the time zone before upgrading, have a supported release for the i5/OS software upgrade.

To define the time zone object for the system before an i5/OS software upgrade, create a data area named QWCTIMZON in the system (QSYS) library. When you perform an initial program load (IPL), the system uses this object when attempting to determine the default value for the time zone (QTIMZON) system value.

To create the data area for the time zone...

1. Sign on to your system using a 5250 emulator session.

2. Type the following command and press F4:

   CRTDTAARA

3. Specify QWCTIMZON for the name of the Data Area (DTAARA).

4. Specify QSYS for the library of the Data Area (DTAARA).

5. Specify *CHAR for the Type parameter.

6. Press Enter.

7. Specify 16 for the Length parameter.

8. For the Initial Value, use the following format:

   Byte 1:	Sign for current Offset from UTC (either '+' or '-')
   Byte 2-3:	Hours for current Offset from UTC (00 to 12)
   Byte 4:	Time separator
   Byte 5-6:	Minutes for current Offset from UTC (00 to 59)
   Byte 7-16:	Time zone description name, left-aligned and padded on the right with blanks.

   Table 1. Example

   Byte	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
   	-	0	6	:	0	0	Q	N	0	6	0	0	C	S	T

9. Press Enter to create the data area.

During the upgrade of the operating system, the system uses this data area to set the time zone (QTIMZON) system value.

 

Parent topic:

Setting the time zone (QTIMZON) system value

Related concepts
Time zone

Related tasks
Initial time zone setting

Related information
Date and time system values: Time zone