AIX 5L Problem Determination - IBM Redbooks

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Figure 5-4 Case study Which of the following conclusions can be drawn? A. The dump request failed. B. The dump request was initiated due to an invalid sequence number. C. The dump request was partially successful. D. The dump request was initiated due to a problem with the device with the major/minor numbers 10,1. 8. What does the LED c20 indicate? A. A system dump failure. B. A partial system dump. C. A complete system dump. D. The low level debugger is invoked. 9. If a system crashes and the LED c20 is displayed, what does this indicate? A. A dump has been forced on the system. B. The system has automatically crashed. C. The kernel debugger has been invoked. D. The system took a partial dump and failed. 104 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques
10.Which of the following codes best indicates that a crash was caused by a software problem? A. 888-102-000-0c8 B. 888-102-207-0c0 C. 888-102-300-0c0 D. 888-102-500-0c4 11.Which of the following codes best indicates that the crash was caused by a hardware problem? A. 888-102-207-0c0 B. 888-102-300-0c4 C. 888-102-300-0c8 D. 888-102-700-0c0 12.Which of the following dump codes best describes the LED 0c2 condition? A. Dump completed successfully B. Dump is incomplete C. No valid dump device D. User requested dump started Chapter 5. System dumps 105
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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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2.4.1 Answers The following are the
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3.1 A general overview of the boot
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mainly to components on the motherb
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Figure 3-3 Task selection menu in d
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3.2.2 PCI systems next step is to s
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3.3 Boot phase 1 Newer PCI architec
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3.4 Boot phase 2 In boot phase 2, t
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As mentioned, there are a lot of di
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3.4.3 LED 518 product documentation
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Figure 3-9 Boot phase 3 /etc/initta
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3.5.2 LED 553 3.5.3 LED c31 3.5.4 L
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3.5.5 pSeries servers A specific LE
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When the system is gracefully shut
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LED Reason/action c31 Define the co
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3. A file system is being mounted b
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3.9.1 Answers 3.10 Exercises The fo
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4.1 Hardware basics RS/6000 and pSe
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The most important fields in the pr
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Figure 4-1 Main diagnostics menu Th
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► Full testing requires that the
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3. Place the CD-ROM into the drive.
Page 76 and 77: Note: This service aid is only pres
Page 78 and 79: 2. Select Change Show use of an SSA
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 84 and 85: 4.5 Quiz The following assessment q
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
Page 92 and 93: A command status screen will be dis
Page 94 and 95: If the system does not have a key s
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
Page 110 and 111: LR: .waitproc+d4 (0000edc4) 2ff3b38
Page 112 and 113: DSIRR Data Storage Interrupt Reason
Page 114 and 115: *prevthread:0xe6000000 *nextthread:
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
Page 122 and 123: Flag Description -p Device Temporar
Page 124 and 125: Figure 5-3 Error log case study 2.
Page 128 and 129: 5.10.1 Answers 5.11 Exercises The f
Page 130 and 131: 6.1 The error daemon The error logg
Page 132 and 133: To change the current log file, the
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Page 136 and 137: Flag Description -g Displays the AS
Page 138 and 139: Flag Description -F FlagList Select
Page 140 and 141: Probable Causes ERRDEMON STARTED AU
Page 142 and 143: To display a detailed report of all
Page 144 and 145: USER ID 0 0=SOFT IPL 1=HALT 2=TIME
Page 146 and 147: Resource Class: planar Resource Typ
Page 148 and 149: Flag Description -k ErrorID[,ErrorI
Page 150 and 151: 6.5.1 Setting up an accounting syst
Page 152 and 153: 6.6 The syslogd daemon The syslogd
Page 154 and 155: Use the following message priority
Page 156 and 157: 3. A system operator accidentally d
Page 158 and 159: 6.7.1 Answers 6.8 Exercises The fol
Page 160 and 161: 7.1 LVM data The Logical Volume Man
Page 162 and 163: 7.2.1 Data relocation 7.2.2 Backup
Page 164 and 165: AIX version level Verify that the v
Page 166 and 167: This example shows that the volume
Page 168 and 169: This error information displays the
Page 170 and 171: hdisk0 Available 30-58-00-8,0 16 Bi
Page 172 and 173: 7.4 The AIX JFS 7.4.1 Creating a JF
Page 174 and 175: 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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7.7.1 Answers 7.8 Exercises The fol
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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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8.6.1 Answers 8.7 Exercises The fol
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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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