Information in trace file

Question

Hi All,
I would like to know if I could find something in Oracle documentation or somewhere else, the meaning of some key words containt in trace file?
For example:
kspdmphblk: fh->kccfhfsz = 11, fh->kccfhbsz = 512
kspdmphblk: hblk->offset_ksphblk = 512, hblk->amount_ksphblk = 2394
kspdmphblk: phyblksize = 512, hdrblksize = 1023, format = 2
kspdmphblk: hdrblku = 11501be0, hdrblk = 11501c00
kspdmphblk: fh->kccfhfsz = 11, fh->kccfhbsz = 512
kspdmphblk: hblk->offset_ksphblk = 512, hblk->amount_ksphblk = 2394
kspdmphblk: phyblksize = 512, hdrblksize = 0, format = 2
kspdmphblk: hdrblku = 0, hdrblk = 11501c00
error 27072 detected in background process
ORA-27072: File I/O error
IBM AIX RISC System/6000 Error: 9: Bad file number
Additional information: 7
Additional information: 7
Additional information: -1
kjzduptcctx: Notifying DIAG for crash eventWhat does fh->kccfhfsz mean? What does 11 and 512 refer to?
Thank you,
Felix

Answer 1

Hi Karthick,
Thank you very the query.
The SCN and Sequence is the same for all datafiles.
But there most be something with one of the datafile that cause the database to crash...
I forgot the end of the trace file in my OP:
System name:    AIX
Node name:      server_name
Release:        1
Version:        6
Machine:        000E36BAD400
Instance name: instance_name
Redo thread mounted by this instance: 1
Oracle process number: 10
Unix process pid: 6393936, image: oracle@server_name(DBW0)
*** 2012-01-04 22:01:54.729
*** SESSION ID:(571.1) 2012-01-04 22:01:54.729
*** CLIENT ID:() 2012-01-04 22:01:54.729
*** SERVICE NAME:(SYS$BACKGROUND) 2012-01-04 22:01:54.729
*** MODULE NAME:() 2012-01-04 22:01:54.729
*** ACTION NAME:() 2012-01-04 22:01:54.729
kspdmphblk: fh->kccfhfsz = 11, fh->kccfhbsz = 512
kspdmphblk: hblk->offset_ksphblk = 512, hblk->amount_ksphblk = 2394
kspdmphblk: phyblksize = 512, hdrblksize = 1023, format = 2
kspdmphblk: hdrblku = 11501be0, hdrblk = 11501c00
kspdmphblk: fh->kccfhfsz = 11, fh->kccfhbsz = 512
kspdmphblk: hblk->offset_ksphblk = 512, hblk->amount_ksphblk = 2394
kspdmphblk: phyblksize = 512, hdrblksize = 0, format = 2
kspdmphblk: hdrblku = 0, hdrblk = 11501c00
error 27072 detected in background process
ORA-27072: File I/O error
IBM AIX RISC System/6000 Error: 9: Bad file number
Additional information: 7
Additional information: 7
Additional information: -1
kjzduptcctx: Notifying DIAG for crash event
----- Abridged Call Stack Trace -----
ksedsts()+644<-kjzdssdmp()+444<-kjzduptcctx()+272<-kjzdicrshnfy()+96<-ksuitm()+1284<-ksbrdp()+4508<-opirip()+1216<-opidrv()+1156<-sou2o()+192<-opimai_real()+308<-ssthrdmain()+340<-main()+216<-__start()+112
----- End of Abridged Call Stack Trace -----
*** 2012-01-04 22:01:54.748
DBW0 (ospid: 6393936): terminating the instance due to error 27072
ksuitm: waiting up to [5] seconds before killing DIAG(6914200)Thank you,
Felix
Edited by: Nayas on Jan 5, 2012 7:58 AM