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<P>ave u enabled quick i/o on the files u want to monitor</P>
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<P>can u please let me know as to how u have enabled the quick i/o</P>
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<P>looks like it is not enabled.</P>
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<P>there are two ways to enable the quick i/o</P>
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<P>first enable the filesystem as quick i/o</P>
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<P>2nd create quick i/o file and then create the datafile based on that name.</P>
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<P>or if u have already have a datafile and if u want to enable quick i/o on that then u will have to offline that particular file and then enable quick i/o on it</P>
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<P>the syntax goes like the below for datafiles</P>
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<P>qiomkfile -h 8k -s 100M name_of_the_file</P>
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<P>the above command creates 2 files one is a .(dot)file and another a link which is linked to this .(dot)file</P>
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<P>or if u have already a datafile and u want to enable this as a quick i/o file</P>
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<P>first bring it offline</P>
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<P>mv datafile .datafile(ie dotdatafile there is a dot prior to the filename)</P>
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<P>then create a link on that datafile</P>
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<P>the scene goes as below</P>
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<P>mv log1blink.ora .log1blink.ora</P>
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<P>ln -s log1blink.ora .log1blink.ora</P>
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<P>once this is done bring that file online and voila</P>
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<P>see the quick i/o working</P>
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<P>if u feel it is not working right then</P>
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<P>make that file offline rm the link and rename the .file as a normal file.</P>
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<P>Below is the truss on one of my logwriter which is showing that aio write is going on</P>
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<P> </P>
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<P>994/1: sigprocmask(SIG_BLOCK, 0xEFFFE740, 0x00000000) = 0<BR>994/1: times(0xEFFFE670) = 15661119<BR>994/1: setitimer(ITIMER_REAL, 0xEFFFE670, 0x00000000) = 0<BR>994/1: sigprocmask(SIG_UNBLOCK, 0xEFFFE6E0, 0x00000000) = 0<BR>994/1: semop(131072, 0xEFFFE748, 1) = 0<BR>994/1: sigprocmask(SIG_BLOCK, 0xEFFFE740, 0x00000000) = 0<BR>994/1: !
setitimer(ITIMER_REAL, 0xEFFFE670, 0x00000000) = 0<BR>994/1: sigprocmask(SIG_UNBLOCK, 0xEFFFE710, 0x00000000) = 0<BR>994/1: kaio(AIOWRITE, 306, 0xA7918000, 512, 0x038BE400, 0x01082DE4) = 0<BR>994/1: kaio(AIOWAIT, 0xEFFFE328) = 17313252<BR>994/1: semctl(131072, 232, 8, 1) = 0<BR>994/1: getcontext(0xEFFFE590)<BR>994/1: sigprocmask(SIG_BLOCK, 0xEFFFE740, 0x0000!
0000) = 0<BR>994/1: times(0xEFFFE670) = 15661121<BR>994/1: setitimer(ITIMER_REAL, 0xEFFFE670, 0x00000000) = 0<BR>994/1: sigprocmask(SIG_UNBLOCK, 0xEFFFE6E0, 0x00000000) = 0<BR>994/1: semop(131072, 0xEFFFE748, 1) = 0<BR>994/1: sigprocmask(SIG_BLOCK, 0xEFFFE740, 0x00000000) = 0<BR>994/1: setitimer(ITIMER_REAL, 0xEFFFE670, 0x00000000) = 0<BR>994/1:&n!
bsp; sigprocmask(SIG_UNBLOCK, 0xEFFFE710, 0x00000000) = 0<BR>994/1: kaio(AIOWRITE, 306, 0xA7918200, 9216, 0x038BE600, 0x01082D50) = 0<BR>994/1: kaio(AIOWAIT, 0xEFFFE328) = 17313104<BR>994/1: semctl(131072, 214, 8, 1) = 0<BR>994/1: getcontext(0xEFFFE590)<BR>994/1: sigprocmask(SIG_BLOCK, 0xEFFFE740, 0x00000000) = 0<BR>994/1: times(0xEFFFE670) &!
nbsp; = 15661135<BR>994/1: setitimer(ITIMER_REAL, 0xEFFFE670, 0x00000000) = 0<BR>994/1: sigprocmask(SIG_UNBLOCK, 0xEFFFE6E0, 0x00000000) = 0<BR><BR></P>
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<DIV></DIV>>From: paquette stephane <STEPHANE_PAQUETTE_at_YAHOO.COM>
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<DIV></DIV>>Reply-To: ORACLE-L_at_fatcity.com
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<DIV></DIV>>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_FATCITY.COM>
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<DIV></DIV>>Subject: Asynch IO and truss question
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<DIV></DIV>>Date: Thu, 07 Dec 2000 19:29:44 -0800
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<DIV></DIV>>Hi all,
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<DIV></DIV>>Since the sys admin is available 15min per week, I've
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<DIV></DIV>>started to play with truss to make sure asynch IO was
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<DIV></DIV>>done.
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<DIV></DIV>>This is on Solaris 2.7, Oracle 8.1.6 and Veritas Quick
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<DIV></DIV>>IO.
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<DIV></DIV>>I've done truss -fl on the the dbwr process.
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<DIV></DIV>>It's giving me
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<DIV></DIV>>28529/1: Received signal #14, SIGALRM, in
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<DIV></DIV>>semop() [caught]
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<DIV></DIV>>28529/1: semop(37224452, 0xFFFFFFFF7FFFDCAC, 1)
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<DIV></DIV>> Err#91 ERESTART
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<DIV></DIV>>28529/1: sigprocmask(SIG_BLOCK,
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<DIV></DIV>>0xFFFFFFFF7FFFD770, 0x00000000) = 0
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<DIV></DIV>>28529/1: times(0xFFFFFFFF7FFFD6A0)
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<DIV></DIV>> = 243599308
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<DIV></DIV>>28529/1: sigprocmask(SIG_UNBLOCK,
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<DIV></DIV>>0xFFFFFFFF7FFFD770, 0x00000000) = 0
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<DIV></DIV>>28529/1: getcontext(0xFFFFFFFF7FFFD3C0)
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<DIV></DIV>>28529/1: setcontext(0xFFFFFFFF7FFFD3C0)
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<DIV></DIV>>28529/1: sigprocmask(SIG_BLOCK,
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<DIV></DIV>>0xFFFFFFFF7FFFDAE0, 0x00000000) = 0
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<DIV></DIV>>28529/1: setitimer(ITIMER_REAL,
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<DIV></DIV>>0xFFFFFFFF7FFFD9B0, 0x00000000) = 0
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<DIV></DIV>>28529/1: sigprocmask(SIG_UNBLOCK,
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<DIV></DIV>>0xFFFFFFFF7FFFDAB0, 0x00000000) = 0
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<DIV></DIV>>28529/1: kaio(AIOWRITE, 402, 0x381C8C000,
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<DIV></DIV>>16384, 0x0342000001E92B70) Err#48 ENOTSUP
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<DIV></DIV>>28529/1: lwp_cond_signal(0xFFFFFFFF7C8EBF70)
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<DIV></DIV>> = 0
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<DIV></DIV>>28529/140: lwp_cond_wait(0xFFFFFFFF7C8EBF70,
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<DIV></DIV>>0xFFFFFFFF7C8EBF80, 0x00000000) = 0
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<DIV></DIV>>28529/140: pwrite(402, "0202\0\0\080\r\b\00E
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<DIV></DIV>>}1A".., 16384, 0x03420000) = 16384
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<DIV></DIV>>28529/1: kaio(AIOWAIT, 0xFFFFFFFF7FFFD710)
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<DIV></DIV>> = 1
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<DIV></DIV>>28529/140: kaio(AIONOTIFY, -2184159392)
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<DIV></DIV>> = 0
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<DIV></DIV>>28529/1: getcontext(0xFFFFFFFF7FFFD8D0)
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<DIV></DIV>>28529/1: sigprocmask(SIG_BLOCK,
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<DIV></DIV>>0xFFFFFFFF7FFFDAE0, 0x00000000) = 0
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<DIV></DIV>>28529/1: times(0xFFFFFFFF7FFFD9B0)
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<DIV></DIV>> = 243599310
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<DIV></DIV>>28529/1: setitimer(ITIMER_REAL,
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<DIV></DIV>>0xFFFFFFFF7FFFD9B0, 0x00000000) = 0
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<DIV></DIV>>28529/1: sigprocmask(SIG_UNBLOCK,
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<DIV></DIV>>0xFFFFFFFF7FFFDA80, 0x00000000) = 0
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<DIV></DIV>>28529/1: semop(37224452, 0xFFFFFFFF7FFFDCAC, 1)
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<DIV></DIV>>(sleeping...)
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<DIV></DIV>>28529/2: kaio(6, 0x00000000, 0x00000000,
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<DIV></DIV>>0x00000000, 0x00000000, 0x00000000) (sleeping...)
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<DIV></DIV>>28529/3: lwp_cond_wait(0xFFFFFFFF7D58DF70,
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<DIV></DIV>>0xFFFFFFFF7D58DF80, 0x00000000) (sleeping...)
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<DIV></DIV>>28529/4: lwp_cond_wait(0xFFFFFFFF7D57BF70,
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<DIV></DIV>>0xFFFFFFFF7D57BF80, 0x00000000) (sleeping...)
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<DIV></DIV>>...
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<DIV></DIV>>I've read on metalink that the error 48 is because of
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<DIV></DIV>>the vol_maxio buffer being smaller than
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<DIV></DIV>>db_file_direct_io_count*db_block_size.
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<DIV></DIV>>Anybody can confirm ?
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<DIV></DIV>>Also, should I be concerned with the 91 error ?
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<DIV></DIV>>TIA
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<DIV></DIV>>=====
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<DIV></DIV>>Stephane Paquette
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<DIV></DIV>>DBA Oracle
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<DIV></DIV>>stephane_paquette_at_yahoo.com
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<DIV></DIV>>
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<DIV></DIV>
<DIV></DIV>>__________________________________________________
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<DIV></DIV>>Please see the official ORACLE-L FAQ: http://www.orafaq.com
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<DIV></DIV>>--
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<DIV></DIV>>Author: =?iso-8859-1?q?paquette=20stephane?=
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<DIV></DIV>> INET: stephane_paquette_at_yahoo.com
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Received on Fri Dec 08 2000 - 16:23:17 CST
