Oracle 8i physical layout

Hi, i am installing oracle 8i on NT
for my production database. I would like to
know optimal solution of oracle logical and physical layouts with 6 physical drives.
Also, how that ties with fault tolerance
i.e. RAID1 RAID5 (which I am thinking of implementing)
If anyone know any good sites with this kind
of architectural solutions, please let me
know.
thank you.
null

No-one have never seen these aspects? :-(
Edited by: Huge10 on 9-mar-2011 6.56

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Database physical layout

Dear All,
We are considering of building a database to be primarily used for datawarehousing. We need to know more about the physical layout: what type of raid configuration for the data files, what should be the ideal size of LUNs, and how much space to allocate for the FRA etc. The database size we are estimating now would be between 1 to 1.5TB. Any suggestion, direction, advise would be highly appreciated.
Thanks.

user6116850 wrote:
We are considering of building a database to be primarily used for datawarehousing. We need to know more about the physical layout: what type of raid configuration for the data files, what should be the ideal size of LUNs, and how much space to allocate for the FRA etc. The database size we are estimating now would be between 1 to 1.5TB. Any suggestion, direction, advise would be highly appreciated.Ito RAID, Oracle recommends SAME - Stripe And Mirror Everything.
Ideal LUN size? There is none. That can be a limitation of the storage array. On a pentabyte warehouse, you may want to use as large as LUNs as possible in order to reduce the number of disks seen by the o/s, as the o/s itself may have a limit on the maximum number of devices it support.
If the storage system does not support striping, then you want to size the LUNs and number of LUNs in such a way to do striping at ASM level (or whatever volume manager s/w used).
For performance, you want the fastest storage system and disks that fits your budget. 1TB is pretty small - that's the size of a standard SATA disk these days. And pretty inexpensive too. But then, using 10 x 128 GB drives and striping these could provide better performance as more disk controllers are available. The downside of that is that this also increases the number of potential disk failures.
You may not want to use a storage system at all, but the local drive bays in the server. And use the onboard SCSI RAID controller to mirror and/or stripe it.
So there's not really a pat answer to the questions you have raised. A lot of it depends on architecture and budget. The only issues that hold true the vast majority of times are that we never have disks that's really as fast as we would like and invariably we want more space... ;-)

How to edit the "Oracle Three Column Layout" page template?

Hello all,
My question is very simple: how can one edit the Oracle Three Column Layout page template? I tried searching the file system for a file called "threeColumnTemplate.jspx" but I cannot seem to find it. Is it hidden into a jar file of some kind? Or at least can anyone tell me the name of the nice component located in the upper right corner that displays the loading activity?
Thanks.

Extract oracle-page-templates.jar with winzip & browse to location oracle/templates
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TP3 Oracle Three Column Layout Template error

Hi,
if I choose for page template: Oracle Three Column Layout and run this page I get blank page with message: Error trying to include:viewId:/oracle/templates/threeColumnTemplate.jspx uri:/oracle/templates/threeColumnTemplate.jspxjavax.servlet.ServletException: Error in servlet
thanks,
Branislav

Hi,
if I exctract threeColumnTemplate.jspx from oracle-page-templates.jar and store it in my project as a template file it works and it works also with FF 2.0.0.11
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Planning the physical layout of the database

Our application keeps very large historical data for 1 year. We do not use the Partitioning Option but have created 12 different BIG TABLES,
one for each month. We are wondering if for performance reason or any other reason, whether it is better to put all the tables
into 2 physical file as show in option 1 or 24 physical files in option 2. Reason for option 2 is to reduce the size of the physical
files so that we can speed up the backup process by selecting individual files to backup on a monthly basis.
Does Oracle have any problem with creating too many Table Spaces and physical data files?
Option 1 - 2 physical data file
HISTDATA Table Space
HISTINDEX Table Space
Option 2 - 24 physical data files
JANDATA Table Space
JANINDEX Table Space
FEBDATA Table Space
FEBINDEX Table Space
MARDATA Table Space
MARINDEX Table Space
DECDATA Table Space
DECINDEX Table Space

From a performance standpoint, it will only have an effect if the different layouts allow you to utilize more disks or to spread the work more evenly among disks. If you have 10 different mount points on 10 different sets of disks, you would probably want files to be spread across all the mountpoints. If you have a SAN where everything is striped and mirrored, it doesn't make a difference.
From a managability and a backup and recovery standpoint, multiple tablespaces seem most appropriate, particularly since 11 of the 12 months can presumably be marked read-only and excluded from the backup.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Oracle reports Page layout problem in HTML

Hi,
I am Using Oracle Reports6i to create my web reports. I found some problem with my reports page layout.
When I print my report from browser which is generated in html, it prints my first page's page number in begining of my second page and it continues in all pages disordering the report.
When I try to print from report builder It prints perfectly.
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Thank you
Regards
Rajesh Sharma
null

dear rajesh
i was also facing same problem,try these things it may help
change the desformat=htmlcss
destype=file
and desname=(name of file where
u want the output) ex. c:\pi.html
after that open that file i believe it wiil be alright,pls confirm me at [email protected]
bye
null

Oracle 10g physical standby error

Hi all,
We been frequently getting this error on our standby DB and not sure if it's network related or a possible configuration tuning.
RFS[425]: Assigned to RFS process 3640
RFS[425]: Identified database type as 'physical standby'
Primary database is in MAXIMUM PERFORMANCE mode
Primary database is in MAXIMUM PERFORMANCE mode
RFS[425]: No standby redo logfiles created
Mon Nov 23 09:47:28 2009
Fetching gap sequence in thread 1, gap sequence 35418-35418
Mon Nov 23 09:48:02 2009
FAL[client]: Failed to request gap sequence
GAP - thread 1 sequence 35418-35418
DBID 3292763437 branch 615642223
FAL[client]: All defined FAL servers have been attempted.
Check that the CONTROL_FILE_RECORD_KEEP_TIME initialization
parameter is defined to a value that is sufficiently large
enough to maintain adequate log switch information to resolve
archivelog gaps.
Mon Nov 23 09:48:17 2009
RFS[384]: No standby redo logfiles created
Mon Nov 23 09:48:21 2009
RFS[425]: Possible network disconnect with primary database
Closing latent archivelog for thread 1 sequence 35419
EOF located at block 1201 low SCN 0:-1055223653 next SCN 0:-1055223015
Latent archivelog 'E:\ORACLE\ARCH\xxxxx\LOG_615642223_1_35419.ARC'
If you wish to failover to this standby database, you should use the
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ALTER DATABASE REGISTER LOGFILE 'E:\ORACLE\ARCH\xxxxx\LOG_xxx615642223_1_35419.ARC';
Redo Shipping Client Connected as PUBLIC
-- Connected User is Valid
RFS[426]: Assigned to RFS process 3200
RFS[426]: Identified database type as 'physical standby'
Primary database is in MAXIMUM PERFORMANCE mode
Primary database is in MAXIMUM PERFORMANCE mode
RFS[426]: No standby redo logfiles created
Any ideas?
thx

I've inherited this DB and never really looked at the settings.
The error I see in the primary DB is
FAL[server]: Fail to queue the whole FAL gap
Protection level on primary is
SQL> SELECT PROTECTION_MODE, PROTECTION_LEVEL FROM V$DATABASE;
PROTECTION_MODE PROTECTION_LEVEL
MAXIMUM PERFORMANCE MAXIMUM PERFORMANCE
Edited by: jrmtl on Nov 23, 2009 7:32 AM

Disk Blocks, Oracle Blocks, Physical vs. Logical I/O

Hi,
I would like to request for some clarification. Sam Alapati states the following in his book “Expert Oracle9i Database Administration:”
“The storage disks on which the Oracle blocks reside are themselves divided into disk blocks, which are areas of contiguous storage containing a certain number of bytes—for example, 4096 or 32768 bytes (4KB or 32KB, because each kilobyte has 1024 bytes). Note that if the Oracle block size is smaller than the operating system file system buffer size, you may be wasting the capacity of the operating system to read and write larger chunks of data for each I/O.”
There are several questions stemming from the above discussion:
1.     Is the “file system buffer size” the same as the size of a disk block?
2.     Is the disk block the unit of physical I/O?
3.     Does there exist such a term as “logical I/O” in Oracle’s nomenclature? With the help of my limited knowledge of database administration, what I understand from the term “logical I/O” is “reading or writing of one Oracle block,” which, in turn, requires several physical I/O’s depending on how large a multiple of the OS block size the Oracle block size is. In that case, does setting the Oracle block size to, say, 8 KB, when the OS block size is, say, 2 KB then mean that one logical I/O would involve four physical I/O’s? Please correct me if I am mistaken.
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Karim

I second that.
For all questions about the very basic concepts in the world of oracle db, you should read the, erhm, yes Concepts guide (read it back and forth a couple of times, then keep revisit).
Also via the tahiti page you can search or get books from libraries of the various server products from 8i, 9i, and 10g families.

Oracle 9i - Physical Storage

Hello,
I am new to Oracle and I need to find a way to move the physical storage of an oracle installation to a NAS device.
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Vanniarajan

Leave the Oracle software on Linux. Your instance will continue to be hosted on Linux. All you would be doing is moving the dbf from the linux box to the NAS. NAS contains a file system which is created by the vendor's software. You do not install any OS on it. Make sure you have a valid backup before moving, just in case.
For example, we have a NetApp SAN box here. All the dbf of my 8i and 9i databases are on it and I have a Windows 2000 Server hosting the 8i instances and a Windows 2003 server hosting the 9i databases.

Oracle Report - Paper Layout vs Web Layout

Hi,
Can anyone tell me the pros and cons for using paper layout and web layout for oracle report?

Hi there,
This was recently asked - please refer to this link:
paper layout & web layout

Oracle - ROWID (Physical and logical)

Hi,
Could you please clarify the below doubts?
- Difference between Physical and Logical ROWID's
- Difference between ROWID and UROWID datatypes
Regards,
Ragav

Instead of an answer, may I suggest you go through following link?
http://download.oracle.com/docs/cd/B19306_01/server.102/b14220/datatype.htm#sthref3894

SGA size is 1 GB free but oracle starts physical read/write,why ?

Dear Friends ,
In my production server I observe that it takes the the data from the HDD where my SGA is still 1 GB free .
As far I know , In oracle , when the allocated SGA size is filled up then it reads the data from the HDD which is called "physical read/write " . I am using oracle 10g database . In performance tab(From Oracle 10g OEM) , when I see that oracle starts to read the physical data , at that moment I run the following query :
select sum(bytes)/1024/1024 " SGA size used in MB"
from v$sgastat
where name!='free memory';
and I found that still 1 GB memory are still free in the SGA .
In this moment , I want to know , is it possible to start the physical read / write while the SGA size are still free ?
Edited by: shipon_97 on Mar 24, 2009 10:45 AM

shipon_97,
Your understanding is wrong. From your previous posts it appears you never read the concepts manual.
Begging on my knees PLEASE READ IT and stop asking doc questions.
Sybrand Bakker
Senior Oracle DBA

How oracle seeded paper layout output should convert in excel?

Hi,
The seeded Oracle Report All Inventory Values Report output is in paper layot. Could anyone tell how this report output should be taken in excel?
Is it possible to convert paper layout output to excel? If so then pls tell the steps how to do that...
Thanks

Actually we are using oracle DDE (Dynamic Data Exchange) package to convert our reports in EXCEL.
Like..
In After Parameter Form we are opening one excel sheet in local drive and then sending some header data through
that trigger.
Fuction we are using are
DDE.APP_BEGIN -- For Opening excel sheet
DDE.INITIATE -- For initializing that sheet in variable
DDE.POKE -- For sending data in excel
From this AFTER PARAMETER trigger of report you have to keep the last row inserted in excel.
Then in reports repeating frame you will use only
DDE.POKE package for sending data in excel by increasing the row + (the last number returned by AFTER PARAMETER)
Try like this..
-Ammad

ORACLE VM physical CPS vs VCPUs

Hi.
I'm little confused with Oracle VM and how many physical CPU and virtual VCPUs I have.
I'm using ldm list-devices -a to get the information.
Someone could explain to me what the next output means?
Thanks a lot.
ldm list-devices -a
CORE
    ID      %FREE   CPUSET
    0       0       (0, 1, 2, 3, 4, 5, 6, 7)
    1       0       (8, 9, 10, 11, 12, 13, 14, 15)
    2       100     (16, 17, 18, 19, 20, 21, 22, 23)
    3       100     (24, 25, 26, 27, 28, 29, 30, 31)
    4       100     (32, 33, 34, 35, 36, 37, 38, 39)
    5       100     (40, 41, 42, 43, 44, 45, 46, 47)
    6       100     (48, 49, 50, 51, 52, 53, 54, 55)
    7       100     (56, 57, 58, 59, 60, 61, 62, 63)
VCPU
    PID     %FREE   PM
    0       0       no
    1       0       no
    2       0       no
    3       0       no
    4       0       no
    5       0       no
    6       0       no
    7       0       no
    8       0       no
    9       0       no
    10      0       no
    11      0       no
    12      0       no
    13      0       no
    14      0       no
    15      0       no
    16      100     ---
    17      100     ---
    18      100     ---
    19      100     ---
    20      100     ---
    21      100     ---
    22      100     ---
    23      100     ---
    24      100     ---
    25      100     ---
    26      100     ---
    27      100     ---
    28      100     ---
    29      100     ---
    30      100     ---
    31      100     ---
    32      100     ---
    33      100     ---
    34      100     ---
    35      100     ---
    36      100     ---
    37      100     ---
    38      100     ---
    39      100     ---
    40      100     ---
    41      100     ---
    42      100     ---
    43      100     ---
    44      100     ---
    45      100     ---
    46      100     ---
    47      100     ---
    48      100     ---
    49      100     ---
    50      100     ---
    51      100     ---
    52      100     ---
    53      100     ---
    54      100     ---
    55      100     ---
    56      100     ---
    57      100     ---
    58      100     ---
    59      100     ---
    60      100     ---
    61      100     ---
    62      100     ---
    63      100     ---

Hello
The system has 8 cores and each core one thread or vcpu
CORE
    ID      %FREE   CPUSET
    0       0       (0, 1, 2, 3, 4, 5, 6, 7)
    1       0       (8, 9, 10, 11, 12, 13, 14, 15)
    2       100     (16, 17, 18, 19, 20, 21, 22, 23)
    3       100     (24, 25, 26, 27, 28, 29, 30, 31)
    4       100     (32, 33, 34, 35, 36, 37, 38, 39)
    5       100     (40, 41, 42, 43, 44, 45, 46, 47)
    6       100     (48, 49, 50, 51, 52, 53, 54, 55)
    7       100     (56, 57, 58, 59, 60, 61, 62, 63)
If you are configuring a ldom system I think is useful this doc that talks about best practices
www.oracle.com/technetwork/server-storage/vm/ovmsparc-best-practices-2334546.pdf
Regards
Eze

Oracle Reports - PDF layout

Hi,
I've just 2 questions:
1 - when i run a Report from my Report Builder client (Oracle Developer Suite) to produce a PDF report file, the report have just 1 page. When I call the same report via URL (http://<ip adress>:<port>/reports/rwservlet?<report>&[parameters]) for the same output the PDF report file take some information on the second page!!!
It seems to be a different setting of the pagesize, is it possibile?
2 - when i design my report every LINE of my fields on the layout seems to be aligned to others, but when i run a Report to produce a PDF report file Acrobat Reader letme see a kind of disalignment at different percentage of Zoom.
For example at 100% the report seems to be disaligned but at 75% or 131% everything seems to be correct!!!
Could it be a rendering problem of Adobe (Acrobat Reader) ?
Thanks in advance for your help.
Bye!!!
Edited by: Huge10 on 3-mar-2011 3.16

No-one have never seen these aspects? :-(
Edited by: Huge10 on 9-mar-2011 6.56

Oracle 8i physical layout

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