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AIX filesystem file system block and  disk sector size

Posted on 2014-03-20
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Last Modified: 2014-03-26
while creating redo logs with 4k block size
we had some error
ORA-01378: The logical block size (4096) of file /u005/oradata/redo/mmbqas02/redo0101.log is not compatible with the disk sector size (medi
a sector size is 512 and host sector size is 512)

So the concern now is:

1-on this host these 2 file systems

df -g
/dev/lv2957017     28.75     20.73   28%       17     1% /u005
/dev/lv2957018     28.75     20.73   28%       17     1% /u015

lsfs
/dev/lv2957017  --         /u005                  jfs2  60293120 noatime,rw yes  no
/dev/lv2957018  --         /u015                  jfs2  60293120 noatime,rw yes  no

we have asked our AIX admin to rebiuld these 2 file systems using (4096) instead of 512B,is it currently 4096?or he made a mistake?

2-what is disk sector size that is showing in the eroor msg?how can we check its size and how can we change it


we have DS8500 behind SVC aix 7.1 TL2 SP3
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Question by:it-rex
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8 Comments
 
LVL 62

Expert Comment

by:gheist
ID: 39943828
"smitty errpt" will show all errors AIX logged.
Did you read AIX install guide on configuring AIO for oracle?
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Author Comment

by:it-rex
ID: 39944113
I'm not sure what you mean?
Is this a wrong post?
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Expert Comment

by:gheist
ID: 39944136
create redo log with blocksize 4096 ...
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LVL 11

Author Comment

by:it-rex
ID: 39944355
That is what I was trying to do.
When I get the error msg
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Expert Comment

by:gheist
ID: 39944553
So make it back with 512....
0
 
LVL 11

Author Comment

by:it-rex
ID: 39945739
forget about the error

these are my Q's

So the concern now is:

1-on this host these 2 file systems

df -g
/dev/lv2957017     28.75     20.73   28%       17     1% /u005
/dev/lv2957018     28.75     20.73   28%       17     1% /u015

lsfs
/dev/lv2957017  --         /u005                  jfs2  60293120 noatime,rw yes  no
/dev/lv2957018  --         /u015                  jfs2  60293120 noatime,rw yes  no

we have asked our AIX admin to rebiuld these 2 file systems using (4096) instead of 512B,is it currently 4096?or he made a mistake?

2-what is disk sector size that is showing in the eroor msg?how can we check its size and how can we change it


we have DS8500 behind SVC aix 7.1 TL2 SP3
0
 
LVL 62

Accepted Solution

by:
gheist earned 1500 total points
ID: 39945774
Oracle does lowlevel checks to see you have advanced format drive under.
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Author Closing Comment

by:it-rex
ID: 39957601
thanks
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