/var/adm/wtmp档案太大怎么办
　　
　　环境 产品：RS/6000
　　软件：AIX
　　问题 /var/adm/wtmp文件保存所有用户登录的讯息,随著时间会增长到很大，/var/adm/wtmp档案太大时怎么办？
　　解答 /var/adm/wtmp档案太大时,有时需要清理或编辑整理。
　　要清理它,执行cp /dev/null /var/adm/wtmp.
　　
　　要编辑整理部分清理,用fwtmp命令先将文件wtmp变成ASCII格式的档案dummy.file:
　　/usr/sbin/acct/fwtmp < /var/adm/wtmp > dummy.file,
　　编辑之後用
　　/usr/sbin/acct/fwtmp -ic < dummy.file > /var/adm/wtmp
　　再将ASCII文件转变成二进位文件.
　　
　　JESMSG显示屏幕,进行类似于上述2中的操作即可.
　　
　　
　　
　　
　　2001/06 AIX安全防范有关的补丁（APAR）
　　
　　环境 AIX V4.3
　　问题 2001/06 AIX安全防范有关的补丁（APAR）
　　解答 以下列出了AIX当前（2001/06）的安全防范有关的补丁（APAR）。如果想下载所有这些补丁，可通过在网站 http://techsupport.services.ibm.com/rs6k/fixdb.html 上指定以下的一个APAR包号来获得：
　　
　　AIX 4.3: IY19897 (updated 6/2001)
　　
　　========================================================
　　AIX 4.3 APARs
　　
　　IX72045 CDE LOGIN GIVES INVALID USER NAME MESSAGE BEFORE PW ENTERED
　　IX72553 SECURITY: VULNERABILITY IN I/O SIGNAL HANDLING
　　IX73077 SECURITY: FTP BOUNCE VULNERABILITY
　　IX73214 SECURITY: TELNET DENIAL OF SERVICE ATTACK
　　IX73438 SECURITY: VULNERABILITY IN DTAPPGATHER
　　IX73586 SECURITY HOLE IN FTP, TFTP, UTFTP
　　IX73836 /ETC/HOSTS.EQUIV IS ALLOWING WRONG USERS TO LOG IN
　　IX73951 SECURITY: ROUTED SHOULD IGNORE TRACE PACKETS
　　IX73961 PCNFSD DAEMON UPDATES WTMP FILE INCORRECTLY
　　IX74296 PROGRAMS USING LEX GENERATED SOURCE COREDUMP
　　IX74599 SECURITY: VULNERABILITY IN DIGEST
　　IX74793 SECURITY HOLE IN TN3270
　　IX74802 CSH CORE DUMPS WHEN ENV VARIABLE IS LONGER THAN 2K
　　IX75275 SECURITY: LOGSYMPTOM FOLLOWS SYMLINKS
　　IX75554 SECURITY: TIMEX CREATES INSECURE TEMPORARY FILES
　　IX75564 ETHERNET DRIVER PASSES PACKETS TOO SMALL CAUSING CRASH
　　IX75566 SECURITY: NON-ROOT USERS CAN CREATE AND BIND TO AF_NDD SOCKETS
　　IX75761 BAD FILE HANDLE CAN CRASH LOCK DAEMON
　　IX75840 SECURITY: DEAD.LETTER CREATED WITH GROUP PRINTQ
　　IX75864 SECURITY: /BIN/MAN CREATES INSECURE TEMPORARY FILES
　　IX76015 NFS V2 DOES HANDLE 65535 AS A UID
　　IX76039 SECURITY: DPID2 CORE DUMPS IN WORLD WRITABLE DIRECTORY
　　IX76040 SECURITY: SNMPD LOG FILE FOLLOWS SYMLINKS
　　IX76049 SECURITY: CDE TRASHINFO FILE CREATED WORLD-WRITABLE
　　IX76960 BIND: CERT ADVISORY CA-98.05
　　IX76962 BIND: CERT ADVISORY CA-98.05
　　IX77338 SECURITY: SORT CREATES INSECURE TEMPORARY FILES
　　IX77508 CDE MAILER (DTMAIL) ALLOWS A USER TO READ A MAILBOX WHICH THE
　　IX77592 SECURITY: PORTMAP CREATES INSECURE TEMPORARY FILES
　　IX78071 IFCONFIG.AT HAVE A WRONG FILE PERMISSIONS
　　IX78202 SECURITY: BUFFER OVERFLOWS IN XTERM AND AIXTERM.
　　IX78248 SECURITY: VULNERABILITY IN GROUP SHUTDOWN
　　IX78349 SECURITY: BAD PERMISSIONS ON /ETC/SECURITY/LOGIN.CFG
　　IX78564 SECURITY:LONG FONTNAMES CAN OVERFLOW BUFFERS IN FONTSERVER
　　IX78612 SECURITY: BUFFER OVERFLOWS IN XAW AND XMU.
　　IX78646 SECURITY: RC.NET.SERIAL CREATES INSECURE TEMPORARY FILES
　　IX78719 NFS V2 DOES NOT HANDLE 65535 AS A UID
　　IX78732 SECURITY: FILES IN /VAR/DT ARE CREATED INSECURELY BY CDE LOGIN
　　IX79136 SECURITY: INSECURE TEMPORARY FILES IN DIAGSUP SCRIPTS
　　IX79139 SECURITY: ACLPUT/ACLEDIT CREATE INSECURE TEMPORARY FILES
　　IX79679 "RCP SECURITY PROBLEM"
　　IX79681 SECURITY: INSECURE TEMPORARY FILES IN CMDMISC SCRIPTS
　　IX79682 SECURITY: INSECURE TEMPORARY FILES IN CMDSCCS SCRIPTS
　　IX79683 SECURITY: INSECURE TEMPORARY FILES IN CMDTZ SCRIPTS
　　IX79700 SECURITY: INSECURE TEMPORARY FILES IN CMDNLS SCRIPTS
　　IX79701 SECURITY: INSECURE TEMPORARY FILES IN CMDTEXT SCRIPTS
　　IX79857 SECURITY HOLE
　　IX79909 NSLOOKUP CORE DUMPS WITH LONG STRINGS
　　IX79979 SECURITY: VULNERABILITY IN GROUP SHUTDOWN
　　IX80036 SECURITY: CRON CREATES INSECURE LOCK FILE
　　IX80387 SECURITY: INSECURE CREATION OF LPD LOCK FILE
　　IX80391 SECURITY: INSECURE TEMPORARY FILES IN CMDSNAP SCRIPTS
　　IX80447 SECURITY: BUFFER OVERFLOWS IN IMAPD
　　IX80470 SECURITY: PTRACE() PROBLEM WITH SET-GID PROGRAMS
　　IX80510 SECURITY: DON''T INHERIT CLOSED STDIN,STDOUT,STDERR DESCRIPTORS
　　IX80543 SECURITY:LIBNSL BUFFER OVERRUNS
　　IX80548 SECURITY: RAS SCRIPTS SHOULDN''T FOLLOW SYMLINKS
　　IX80549 SECURITY: /BIN/MORE CREATES INSECURE TEMPORARY FILES
　　IX80762 SECURITY: /BIN/VI CREATES INSECURE TEMPORARY FILES
　　IX80792 SECURITY: BUFFER OVERFLOWS IN IMAPD
　　IX81058 SECURITY: INSECURE TEMPORARY FILES IN CMDBSYS SCRIPTS
　　IX81077 SECURITY: TTYLOCK() ALLOWS CREATION OF WORLD-READABLE FILES
　　IX81078 SECURITY: INSECURE TEMPORARY FILES IN CMDFILES SCRIPTS
　　IX81442 SECURITY: VULNERABILITY IN RPC.TTDBSERVERD
　　IX81507 SECURITY: MORE VULNERABILITIES IN PCNFSD
　　IX81999 POST COMMAND SHOULD NOT BE SUID
　　IX82002 FORCE REXECD USER PRIVILEDGES
　　IX83752 SECURITY: VULNERABILITY IN AUTOFS
　　IX84493 SECURITY: VULNERABILITY IN SETGID EXECUTABLES
　　IX84642 SECURITY: VULNERABILITY IN INFOEXPLORER DAEMON (INFOD)
　　IX85233 SECURITY : MAILBOX GETS CORRUPTED
　　IX85556 SECURITY: BUFFER OVERFLOW IN FTP CLIENT
　　IX85600 BOOTP: CERT ADVISORY
　　IX86845 SVCAUTH_UNIX CRASH ON NEGATIVE NUMBER
　　IX87016 REMBAK FAILS WHEN INVOKED WITH VERY LONG USERNAME/HOSTNAME
　　IX87669 NULL MBUF CAN CRASH SYSTEM IN NFS CODE
　　IX87727 STOP UNCOMMENTING RPC DAEMONS IN /ETC/INETD.CONF AFTER NFS
　　IX88021 ADD FINGER TIMEOUT
　　IX88263 SECURITY: SNAP MAY LEAK SENSITIVE INFORMATION
　　IX88633 SECURITY: INSECURE TEMPORARY FILES IN /SBIN/RC.BOOT
　　IX89182 LICENSE SERVER HANGS
　　IX89415 SECURITY: XAUTH IS BROKEN IN 4.3.X
　　IX89419 SECURITY: BUFFER OVERFLOW IN DTSPCD
　　IX89687 SECURITY: NFS SCRIPTS CREATE INSECURE TEMPORARY FILES
　　IY00892 INSECURE TEMPORARY FILES IN BOS.PERF PACKAGING SCRIPT
　　IY01439 SECURITY: INSECURE TEMPORARY FILES IN /ETC/RC.POWERFAIL
　　IY02120 SECURITY: BUFFER OVERFLOW IN NSLOOKUP
　　IY02397 SECURITY: NON-ROOT USERS CAN USE PTRACE TO CRASH THE SYSTEM
　　IY02944 SECURITY: BUFFER OVERFLOW IN "DTACTION -U"
　　IY03849 SECURITY: VULNERABILITY IN TTSESSION
　　IY04477 SECURITY BUFFER OVERFLOWS IN FTPD
　　IY04865 SECURITY: NON-ROOT USERS CHANGE SYS INFO VIA SNMPD
　　IY05249 SECURITY: BUFFER OVERFLOWS IN SNMPD
　　IY05772 SECURITY: POSSIBLE BUFFER OVERFLOW IN AIXTERM TITLE HANDLING
　　IY05851 NAMED8: SECURITY VULNERABILITIES IN BIND
　　IY06059 GENFILT CANNOT FILTER PORT NUMBERS > 32767
　　IY06367 SECURITY: VULNERABILITY IN DTPRINTINFO
　　IY06589 BUG IN GET_SEQNUM
　　IY06694 SECURITY: ANOTHER BUFFER OVERFLOW IN DTSPCD
　　IY06697 SECURITY: RPC.MOUNTD ALLOWS FILENAME DISCOVERY AGAIN
　　IY06814 CRASH IN FLTR_IN_CHK() M_COPYDATA()
　　IY06817 XDM HAS TROUBLE WITH LONG PASSWORDS
　　IY07265 CHSEC ALLOWS NON-ADMIN USR TO CHANGE ADMIN USER ATTRIBUTES
　　IY07425 IN CERTAIN CASES, LIBQB ROUTINE CAN CAUSE CORE DUMP
　　IY07831 SECURITY: BUFFER OVERFLOW IN SETCLOCK
　　IY07832 SECURITY: ANOTHER BUFFER OVERFLOW IN PORTMIR
　　IY08128 SECURITY: VULNERABILITY IN MKATMPVC
　　IY08143 SECURITY: BUFFER OVERFLOWS IN ENQ COMMAND
　　IY08606 SECURITY: BUFFER OVERFLOW IN _XAIXREADRDB
　　IY08812 SECURITY: BUFFER OVERFLOW IN SETSENV
　　IY09514 SECURITY: VULNERABILITY IN FRCACTRL
　　IY09941 SECURITY: LOCAL USERS CAN GAIN WRITE ACCESS TO SOME FILES
　　IY10250 DHCPSD: SECURITY: D-O-S ATTACK VULNERABILITY
　　IY10805 MKATM IS A SHELL SCRIPT AND SHOULDN''T BE SETUID
　　IY11067 X SERVER FREEZES DUE TO DOS
　　IY11224 SECURITY: BUFFER OVERFLOW IN XTERM
　　IY11233 SECURITY: NCS CMDS LINKED WITH INSECURE LINKER ARGUMENT
　　IY11450 SECURITY: BUFFER OVERRUN IN MIT KERBEROS LIBRARIES
　　IY12147 NON-ROOT USERS CAN ISSUE THE NETSTAT -Z FLAG
　　IY12251 SECURITY: POSSIBLE VULNERABILITIES IN ERRPT
　　IY12638 SECURITY: BUFFER OVERFLOW IN PRINT CMDS
　　IY13753 SECURITY: FORMAT STRING VULNERABILITY IN LOCALE SUBSYSTEM
　　IY13780 SECURITY: BUFFER OVERFLOW IN LIBNTP
　　IY13781 SECURITY: FORMAT STRING VULNERABILITY IN FTP CLIENT
　　IY13783 FORMAT STRING VULNERABILITIES IN GETTY''S ERROR LOGGING FUNCS
　　IY14512 DNS CERT ADVISORY FOR SRV & ZXFR BUGS
　　IY14537 BUFFER OVERFLOW IN BELLMAIL
　　IY15146 SYSLOGD:BUFFER OVERFLOW AND IMPROPER CONTROL CHARACTER ESCAPES
　　IY16182 SECURITY: BUFFER OVERFLOW IN BIND8
　　IY16214 BUFFER OVERFLOW AND FORMAT STRING VULNERABILITIES IN BIND 4.X
　　IY16271 SECURITY: INFOLEAK IN NUMEROUS VERSIONS OF NAMED4 AND NAMED8
　　IY17048 SECURITY: POSSIBLE BUFFER OVERFLOW VULNERABILITY IN CRONTAB
　　IY17932 SECURITY: IMAPD BUFFER OVERFLOW
　　=========================================================
　　
　　
　　当运行mksysb时，系统报错：“rootvg is locked”(根卷组被锁定)
　　
　　环境 AIX V4
　　问题 用户在试图运行mksysb时，得到一个错误信息：“rootvg is locked”(根卷组被
　　锁定)，导致不能进行备份。
　　解答 要解开rootvg,键入以下命令：
　　
　　# chvg -u rootvg