Oracle Architecture and Tuning on AIX (v 2.30).pdf
Code:
Starting with Oracle 11.2.0.2 when AIX 6.1 or AIX 7.1 is detected, Oracle will use O_CIOR option to open a file on JFS2.
Therefore you should no longer mount the filesystems with mount option –o cio.
When Oracle is open a file in cio-mode your system will not cache this data.
Maybe you need do define a greater SGA to reach a good cache hit:
Code:
SGA_MAX_SIZE
Starting with Oracle 9i, the Oracle SGA size can be dynamically changed. It means the DBA just
needs to set the maximum amount of memory available to Oracle (SGA_MAX_SIZE) and the initial
values of the different pools: DB_CACHE_SIZE, SHARED_POOL_SIZE, LARGE_POOL_SIZE etc…
The size of these individual pools can then be increased or decreased dynamically using the ALTER SYSTEM
command, provided the total amount of memory used by the pools does not exceed SGA_MAX_SIZE. If LOCK_SGA = TRUE,
his parameter defines the amount of memory Oracle allocates at DB startup in “one piece”! Also,
SGA_TARGET is ignored for the purpose of memory allocation in this case.
PS: Our DB-Mashine runs "normal" with 30.000 Page Faults/sec
Hello
Please can you tell me how to access COPY ON WRITE page faults in HP -UNIX.
I found the structure in
/usr/include/sys/vmmeter with the structure name vmmeter.
Please tell me the function to fill the values to this structure and also
the arguments for function.:: (5 Replies)
Hi,
Will anybody tell me what is this 'intransient blocking page faults' in HP-UX, it is in the structure _pst_vminfo in the header file /ust/include/sys/pstat/vm_pstat_body.h? (4 Replies)
Hi,
We are running SUN sparc 5.8, notice frequent "Page Faults" message from our monitor s/w "ServerVantage" coming but no message display in SUN syslog or messages log. Any ideas why or what to check?
thanks,
Ahmad (2 Replies)
Hi,
Currently I'm experience very high page ins on my system running on solaris 10.
From vmstat, the page ins figure is very high, further drill down shows the page ins are from file system and occassional spike in executable page ins.
Details as follow:
oracle@perch:/files>> vmstat 5... (9 Replies)
Hello,
I've been reading your forums for quite a while and the great amount of information I find here always come in hand.This time however, I need some specific help...
I have a doubt with an AIX server which I'm failing to understand as I'm new to its concept of memory management...
... (8 Replies)
Hi,
OS = AIX 5.3
Large number of page faults recently start to occure on AIX 5.3 lpar with mysql database installed. I need help in setting AIX OS parameter to solve the paging problem and some guidance on interpreting my stats
t
Code:
# vmstat... (5 Replies)
Hi,
Can someone help and give the answer for the following questions:
1. When PowerHA SystemMirror 7.1 is installed on AIX 7.1, what RSCT component does Cluster Aware AIX (CAA) replace?
A. Group Services
B. Resource Manager
C. Topology Services
D. Resource Monitoring and Control... (2 Replies)
Hi guys,
I have a zone on a M5000 server running solaris 10. The zone has an SAP application running on it and facing some performance issues. As part of the troubleshooting, I've been recommended to look for any paging on the OS. Please advise how to look for the paging.
I've been looking at... (4 Replies)
I am new to AIX but not new to unix.
I have an interview for an AIX systems admin position and I know they want someone who has knowledge of High Availability, Failover and LPARs
From my research so far, It appear powerha is used to setup high availability and failover on Power systems but is... (2 Replies)
Discussion started by: mathisecure
2 Replies
LEARN ABOUT DEBIAN
dbix::class::storage::dbi::oracle::wherejoins
DBIx::Class::Storage::DBI::Oracle::WhereJoins(3pm) User Contributed Perl Documentation DBIx::Class::Storage::DBI::Oracle::WhereJoins(3pm)NAME
DBIx::Class::Storage::DBI::Oracle::WhereJoins - Oracle joins in WHERE syntax support (instead of ANSI).
PURPOSE
This module is used with Oracle < 9.0 due to lack of support for standard ANSI join syntax.
SYNOPSIS
DBIx::Class should automagically detect Oracle and use this module with no work from you.
DESCRIPTION
This class implements Oracle's WhereJoin support. Instead of:
SELECT x FROM y JOIN z ON y.id = z.id
It will write:
SELECT x FROM y, z WHERE y.id = z.id
It should properly support left joins, and right joins. Full outer joins are not possible due to the fact that Oracle requires the entire
query be written to union the results of a left and right join, and by the time this module is called to create the where query and table
definition part of the SQL query, it's already too late.
METHODS
See DBIx::Class::SQLMaker::OracleJoins for implementation details.
BUGS
Does not support full outer joins. Probably lots more.
SEE ALSO
DBIx::Class::SQLMaker
DBIx::Class::SQLMaker::OracleJoins
DBIx::Class::Storage::DBI::Oracle::Generic
DBIx::Class
AUTHOR
Justin Wheeler "<jwheeler@datademons.com>"
CONTRIBUTORS
David Jack Olrik "<djo@cpan.org>"
LICENSE
This module is licensed under the same terms as Perl itself.
perl v5.14.2 2011-05-10 DBIx::Class::Storage::DBI::Oracle::WhereJoins(3pm)