AIX 5L Problem Determination - IBM Redbooks

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4.5 Quiz The following assessment questions help verify your understanding of the topics discussed in this chapter. 1. Which of the following commands should be used to determine the microcode level of a system? A. lsattr -El B. lscfg -vl C. lsCs ssa D. lsdev -Cc disk 2. After a legacy, the microchannel system has gone down with flashing 888s. Which of the following procedures is the best way to diagnose the problem? A. Turn the power off and back on. B. Reboot the system in maintenance mode. C. Turn the key to service and press the Reset button to take a dump. D. Verify that the key is in normal mode and press the Reset button to obtain error codes. 3. Which of the following AIX commands should be used to determine if there is a Service Request Number (SRN) on a device? A. diag B. lssrn C. lsdev D. errpt 4. Using information provided in Figure 4-3 on page 63, all of the following are true except: A. The error was unrecoverable. B. The termination of the SCSI bus failed. C. A defective cable or terminator probably caused the error. D. The presence of all zeros in the sense data indicates invalid data. 62 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques
Figure 4-3 Case study 5. A mirrored SSA data disk volume group must have a disk replaced. Which of the following concerns should be considered? A. Schedule down time for rebooting. B. Schedule down time for replacement of disk. C. Schedule down time for replacement of disk and reboot. D. Schedule disk replacement for non-peak usage time. Chapter 4. Hardware problem determination 63
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ibm.com/redbooks IBM Certification
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Note: Before using this information
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3.5.1 The /etc/inittab file . . . .
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7.2.1 Data relocation . . . . . . .
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9.9.1 The lslicense command . . . .
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x IBM ^ Certification Study Guide -
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10-12 Performance tuning flowchart
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8-7 Commonly used flags of the rout
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Trademarks The following terms are
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This publication does not replace p
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Comments welcome Your comments are
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1.1 Certification requirements To a
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e. Verify that file systems are mou
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Preparation for this exam is the to
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2.1 Defining the problem The first
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If the problem occurs on more than
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Page 36 and 37: 3.1 A general overview of the boot
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Page 40 and 41: Figure 3-3 Task selection menu in d
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Page 52 and 53: Figure 3-9 Boot phase 3 /etc/initta
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Page 70 and 71: Figure 4-1 Main diagnostics menu Th
Page 72 and 73: ► Full testing requires that the
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Page 80 and 81: LED 299 A LED code of 299 shows tha
Page 82 and 83: Figure 4-2 Format of the 103 code m
Page 86 and 87: 4.5.1 Answers 4.6 Exercises The fol
Page 88 and 89: 5.1 Configuring the dump device Pri
Page 90 and 91: 5.2 Starting a system dump A user-i
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Page 96 and 97: The shconf command is invoked when
Page 98 and 99: 5.4 Increasing the size of the dump
Page 100 and 101: Setting output device to /dev/rmt0.
Page 102 and 103: Look at the time of the dump and th
Page 104 and 105: Failure Causes SOFTWARE PROGRAM Rec
Page 106 and 107: Using crash, you can examine: ► A
Page 108 and 109: ► ? or help[] Lists all subcomman
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Page 116 and 117: In this example, the VMM return cod
Page 118 and 119: The snap command syntax is as follo
Page 120 and 121: Flag Description -t Format Lists ea
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Page 124 and 125: Figure 5-3 Error log case study 2.
Page 126 and 127: Figure 5-4 Case study Which of the
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Page 130 and 131: 6.1 The error daemon The error logg
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To process a report from the error
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Flag Description -g Displays the AS
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Flag Description -F FlagList Select
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Probable Causes ERRDEMON STARTED AU
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To display a detailed report of all
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USER ID 0 0=SOFT IPL 1=HALT 2=TIME
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Resource Class: planar Resource Typ
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Flag Description -k ErrorID[,ErrorI
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6.5.1 Setting up an accounting syst
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6.6 The syslogd daemon The syslogd
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Use the following message priority
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3. A system operator accidentally d
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6.7.1 Answers 6.8 Exercises The fol
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7.1 LVM data The Logical Volume Man
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7.2.1 Data relocation 7.2.2 Backup
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AIX version level Verify that the v
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This example shows that the volume
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This error information displays the
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hdisk0 Available 30-58-00-8,0 16 Bi
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7.4 The AIX JFS 7.4.1 Creating a JF
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7.4.2 Increasing the file system si
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In many cases, restoration of the b
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lv02 jfs 2 2 1 open/syncd /u/testfs
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► Understanding enhanced journale
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512 bytes) to minimize internal fra
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Function JFS2 JFS Compression No Ye
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7.4.10 Disk quota Pseudo file name
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home: blocks in use: 0, limits (sof
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7.5.3 Reducing and removing paging
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Table 7-3 Commonly used flag of the
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7.6.4 The rmlvcopy command The rmlv
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Which of the following commands sho
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8.1 Network interface problems If h
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As you can see, the output shows th
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3. If there is a default route, att
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If you are using the route command
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address of the named server and try
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TOK: access control field = 0, fram
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4. Initiate an iptrace (client, ser
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the nfs_max_threads parameter of th
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Flags Description -s host Records p
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8.6 Quiz Table 8-8 Commonly used fl
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8. Which of the following options w
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9.1 User license problems If it is
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telnet: connect: A remote host did
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9.2.4 Telnet error If when attempti
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user is limited and defined as an A
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9.4.3 A full file system uid=0(root
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9.5.1 Trace hook IDs The events tra
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your trace, the system may be traci
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113 0.004261661 0.001518 unlock: lo
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If the sendmail command encounters
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9.8 Printing Task SMIT fast path Co
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Action or function System V PowerPC
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Switching between subsystems The op
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Flag Description -s Subsystem Speci
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9.10 Quiz Flag Description -O Optio
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6. A user has the ability to ping t
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232 IBM ^ Certification Study Guide
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Figure 10-1 General performance tun
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Display previously captured data Th
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10.1.2 The vmstat command The vmsta
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later). The method used in AIX Vers
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second. Large values indicate a CPU
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kernel routine records the process
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syncd 1 2 2 0 0 0 sh 1 1 1 0 0 0 sl
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The memory columns The memory colum
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The sr column The sr column shows t
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If you want to sort to the sixth co
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► Workload Management Class (-W)
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schedtune limitations The schedtune
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schedtune parameters are reset by t
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Normal files are automatically mapp
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tty: tin tout avg-cpu: % user % sys
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When looking for performance proble
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those that do not. If you are runni
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The netstat -m command The netstat
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spec buf 1 0 0 0 128 128 0 locking
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Late Collision Errors The Late Coll
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The retrans column displays the num
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Figure 10-3 Web-based System Manage
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Superclasses A superclass is a clas
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► Shared subclass: This subclass
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The sequence of attributes within a
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This manual assignment can be done
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This defines three levels of privil
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The class assignment is done by WLM
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Figure 10-8 shows the SMIT panel wh
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Figure 10-10 SMIT panel for rset re
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10.6.1 The dbx command The dbx comm
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Subcommand Description return Conti
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15) phxent_dd [5 entries] 16) kbddd
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10.8 Command summary The following
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10.8.4 The nfsstat command 10.9 Qui
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6. Which command will show system c
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11.1 Overview 11.1.1 Terminology 11
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Note: Before installing a new set o
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► APAR number, such as IY00301. I
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► To install all filesets associa
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Table 11-2 Commonly used flags of t
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11.5 Quiz Flag Description -f Check
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- A Web server The browser must be
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Figure 12-2 HTTP filesets If you ar
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- Remote computer Type the remote d
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Figure 12-4 Documentation Library S
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CISPR International Special Committ
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I/O Input/Output I 2 C Inter Integr
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OEM Original Equipment Manufacturer
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SPM System Performance Measurement
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Other resources These publications
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phase1 figure 23 phase2 15, 24, 36
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pc.statd 189 daemons shdaemon 73 te
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host name resolution telnet login p
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N name resolution diagnostic 185 pr
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ecent CPU usage 241 recovering an i
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System Resource Controller (SRC) 13
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