IBM SY44-5902-05 manual Service Reference Procedures, Setting the system date and time

1. To set the correct date, enter the system command: CHGSYSVAL QDATE VALUE(’mmddyy’)

Chapter 4. Service Reference Procedures

Setting the system date and time . . . . . . . 125 Determining the dominant operating system . . . 126 System password . . . . . . . . . . . . 126 System unique identifier. . . . . . . . . . 127 Determining a primary or alternative console. . . 128

Introduction . . . . . . . . . . . . . 128

Primary console requirements	.	128
Identifying the consoles when the system is
operational . . . . . . . . . . . . . 128
Locating the system’s load source from the system
console	.	129
History file	.	130
Continuously Powered Main Storage (CPM) . .	. 131
Low-level debug and data collecting procedures		131
Introduction . . . . . . . . . . . . . 131
Getting started	.	131
Displaying data for functions 54 through 58, 63,
and 64 (Models 150, 170, 250, 4xx, 50x, 51x, 530,
53S, 6xx, 7xx, SB1, and Sxx)	.	131
Displaying data for functions 57, 63, and 64
(Models 270, 8xx, SB2, SB3, and 890) . . .	. 132
Changing the address in functions 59 through
61 (Models 150, 170, 250, 4xx, 50x, 51x, 530, 53S,
6xx, 7xx, SB1, and Sxx)	.	133
Introduction . . . . . . . . . . . . 133
Changing the address	.	134
Changing the address in functions 58 through
61 (Models 270, 8xx, SB2, SB3, and 890) . .	. 135
Introduction . . . . . . . . . . . . 135
Changing the address	.	135
Displaying data from function 62	. 136
Logical partitions	.	136
Examples: Missing or non-reporting system bus
resources . . . . . . . . . . . . . . 137
Determining the release level of a logical
partition . . . . . . . . . . . . . . 138
Locating a secondary partition’s console . .	. 138
Locating a secondary partition’s load source .	. 139

Locating a secondary partition’s load source
from the secondary partition’s console . . .	. 139
Locating a secondary partition’s load source
from the primary partition’s console. . . .	. 140
Querying logical partition time and date . .	. 141
Converting secondary partition time and date to
primary partition time and date	.	141
Finding the SRC history list for a secondary
partition	.	141

Closing related problems in other logical

partitions . . . . . . . . . . . . . . 141 Accessing the panel functions of a logical partition . . . . . . . . . . . . . . 142

Determining which logical partition owns a
FRU or a system I/O resource	. 142
Selecting IPL source and mode for a secondary
partition . . . . . . . . . . . . . . 143
Options on the Work with Partition Status
display	.	143
Guest partitions	.	147
Determining if the system has guest
partitions . . . . . . . . . . . . . 148
Determining the release level of a guest
partition . . . . . . . . . . . . . 148
Determining the hosting partition of a guest
partition . . . . . . . . . . . . . 148
IASP/Clustering Service Reference Procedures .	. 149

Determining if a tower is configured as
switchable . . . .	.	.	. . . . . .	.	149
Determining the power controlling system of a
tower	.	.	. . . . . .	.	150

Determining the resource name and HSL loop number of an HSL I/O bridge . . . . . . . 152 Switching ownership of a tower’s switchable resources . . . . . . . . . . . . . . 154 Switching the mode of a tower’s switchable resources . . . . . . . . . . . . . . 156

Setting the system date and time

Attention: Customer applications may be sensitive to system date and time settings. Incorrect date and time settings may cause data loss. Ensure that the customer knows the date and time that you have set.

Use one of the following methods to set the date and time:

vIf the system is powered off, perform a Manual mode (attended) IPL. You can set the date and time on the IPL Options display. See the iSeries Information Center for information.

vIf the system is powered on, perform the following procedure:

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