Oracle and the segment size of external storage block size

Hi all.
I have a storage which will host an instance of Oracle data files. The RAID should be configured and for this, my colleague needs set the segment size. Its options are 16 k, 32 k, 64 k.
The db Oracle will essentially the size of block 8 k value. The oracle block size must be synchronized with the size of the minimum of 16 k segment?
How this change may affect performance?
Thank you.

rp0428, nice answer.

Balu, as I suggested use 64K and call it a day.

HTH - Mark D Powell.

Edited by: Mark D Powell on August 10, 2012 12:12

Tags: Database

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failure of duplication
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Recovery Manager: release 12.1.0.1.0 - Production on Fri Sep 6 11:30:09 2013
Copyright (c) 1982, 2013, Oracle and/or its affiliates. All rights reserved.
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113246208 of database buffers bytes
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Total System Global Area 626327552 bytes
Bytes of size 2291472 fixed
507513072 variable size bytes
113246208 of database buffers bytes
Redo buffers 3276800 bytes
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Bytes of size 2291472 fixed
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******************************************
managed replication
******************************************
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"/u01/oradata/c12/control01.ctl", "/u01/app/oracle/fast_recovery_area/c12/control02.ctl" comment is
' ' scope = spfile;
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"t12", "c12" comment is
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SQL statement: alter system db_name set = comment "C12" = "duplicate" scope = spfile
SQL statement: alter system set audit_file_dest = comment "/ u01/app/oracle/admin/c12/adump" = "' scope = spfile
SQL statement: alter system set control_files = "/u01/oradata/c12/control01.ctl", "/u01/app/oracle/fast_recovery_area/c12/control02.ctl" comment = "' scope = spfile
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SQL statement: alter system set db_file_name_convert = "t12", "c12" comment = "' scope = spfile
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Oracle instance started
Total System Global Area 626327552 bytes
Bytes of size 2291472 fixed
507513072 variable size bytes
113246208 of database buffers bytes
Redo buffers 3276800 bytes
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Total System Global Area 626327552 bytes
Bytes of size 2291472 fixed
507513072 variable size bytes
113246208 of database buffers bytes
Redo buffers 3276800 bytes
From restoration 13 / SEP / 06
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output file name=/u01/app/oracle/fast_recovery_area/c12/control02.ctl
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channel ORA_AUX_DISK_1: specifying datafile (s) to restore from backup set
channel ORA_AUX_DISK_1: restore datafile to /u01/oradata/c12/users01.dbf 00006
channel ORA_AUX_DISK_1: restoration complete, duration: 00:00:07
Restoration finished 13 / SEP / 06
SQL statement: alter system archive log current
Current archived log
content of Script memory:
{
restore the strength of the clone of service "t12".
ARCHIVELOG SNA 2035520.
switch from clone datafile;
}
execution of Script memory
From restoration 13 / SEP / 06
using the ORA_AUX_DISK_1 channel
channel ORA_AUX_DISK_1: Startup archived log restore to default destination
ORA_AUX_DISK_1 channel: using the set of backup service t12 network
channel ORA_AUX_DISK_1: restoration of archives Journal
Archives journal thread = 1 sequence = 57
channel ORA_AUX_DISK_1: restoration complete, duration: 00:00:01
channel ORA_AUX_DISK_1: Startup archived log restore to default destination
ORA_AUX_DISK_1 channel: using the set of backup service t12 network
channel ORA_AUX_DISK_1: restoration of archives Journal
Archives journal thread = 1 sequence = 58
channel ORA_AUX_DISK_1: restoration complete, duration: 00:00:01
Restoration finished 13 / SEP / 06
DataFile 1 passed to the copy of the data file
entry of data copy file RECID = 6 STAMP = 825422144 file name=/u01/oradata/c12/system01.dbf
DataFile 2 passed to the copy of the data file
entry of data copy file RECID = STAMP 7 = 825422144 file name=/u01/oradata/c12/test01.dbf
DataFile 3 to the copy of the data file
entry of data copy file RECID = STAMP 8 = 825422145 file name=/u01/oradata/c12/sysaux01.dbf
DataFile 4 switched to the copy of the data file
entry of data copy file RECID = STAMP 9 = 825422145 file name=/u01/oradata/c12/undotbs01.dbf
DataFile 6 switched to the copy of the data file
entry of data copy file RECID = STAMP 10 = 825422145 file name=/u01/oradata/c12/users01.dbf
content of Script memory:
{
until the SNA 2035798.
recover
clone database
delete archivelog
;
}
execution of Script memory
executing command: SET until clause
From recover 13 / SEP / 06
using the ORA_AUX_DISK_1 channel
starting media recovery
Journal archived for thread 1 with 57 sequence is already on the disc in the file /u01/oradata/arch/1_57_825025894.dbf
Journal archived for thread 1 with 58 sequence is already on the disc in the file /u01/oradata/arch/1_58_825025894.dbf
Archive log file name=/u01/oradata/arch/1_57_825025894.dbf thread = 1 sequence = 57
Archive log file name=/u01/oradata/arch/1_58_825025894.dbf thread = 1 sequence = 58
media recovery complete, duration: 00:00:01
Finished recover 13 / SEP / 06
Oracle instance started
Total System Global Area 626327552 bytes
Bytes of size 2291472 fixed
507513072 variable size bytes
113246208 of database buffers bytes
Redo buffers 3276800 bytes
content of Script memory:
{
clone of SQL 'alter system set = db_name
"C12" comment =
' Restore the original value by RMAN "scope = spfile;
clone of SQL 'alter system reset db_unique_name scope = spfile;
}
execution of Script memory
SQL statement: alter system db_name set = comment "C12" = "Reset to original by RMAN value" scope = spfile
SQL statement: alter system reset db_unique_name scope = spfile
Oracle instance started
Total System Global Area 626327552 bytes
Bytes of size 2291472 fixed
507513072 variable size bytes
113246208 of database buffers bytes
Redo buffers 3276800 bytes
SQL statement: CREATE CONTROLFILE REUSE DATABASE "C12" RESETLOGS ARCHIVELOG VALUE
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 292
LOGFILE
GROUP 1 (' / u01/oradata/c12/redo01.log') SIZE 50 M REUSE.
GROUP 2 (' / u01/oradata/c12/redo02.log') SIZE 50 M REUSE.
GROUP 3 (' / u01/oradata/c12/redo03.log') SIZE 50 M REUSE
DATA FILE
' / u01/oradata/c12/system01.dbf'
WE8MSWIN1252 CHARACTER SET
content of Script memory:
{
the value of newname for tempfile 1 to
"/ u01/oradata/c12/temp01.dbf";
clone tempfile switch all;
Catalog datafilecopy clone "/ u01/oradata/c12/test01.dbf."
"/ u01/oradata/c12/sysaux01.dbf"
"/ u01/oradata/c12/undotbs01.dbf"
"/ u01/oradata/c12/users01.dbf";
switch from clone datafile;
}
execution of Script memory
executing command: SET NEWNAME
renamed tempfile 1-/u01/oradata/c12/temp01.dbf in the control file
catalogued data file copy
DataFile copy file name=/u01/oradata/c12/test01.dbf RECID = 1 STAMP = 825422173
catalogued data file copy
DataFile copy file name=/u01/oradata/c12/sysaux01.dbf RECID = TONE 2 = 825422173
catalogued data file copy
DataFile copy file name=/u01/oradata/c12/undotbs01.dbf RECID = STAMP 3 = 825422174
catalogued data file copy
DataFile copy file name=/u01/oradata/c12/users01.dbf RECID = STAMP 4 = 825422174
DataFile 2 passed to the copy of the data file
entry of data copy file RECID = 1 STAMP = 825422173 file name=/u01/oradata/c12/test01.dbf
DataFile 3 to the copy of the data file
entry of data copy file RECID = 2 STAMP = 825422173 file name=/u01/oradata/c12/sysaux01.dbf
DataFile 4 switched to the copy of the data file
entry of data copy file RECID = STAMP 3 = 825422174 file name=/u01/oradata/c12/undotbs01.dbf
DataFile 6 switched to the copy of the data file
entry of data copy file RECID = 4 STAMP = 825422174 file name=/u01/oradata/c12/users01.dbf
content of Script memory:
{
ALTER clone database open resetlogs;
}
execution of Script memory
open database
Finished the duplicate Db 13 / SEP / 06

He has been identified as a bug and workaround is not to use the SIZE of the SECTION

Oracle and the SSDS
Hello

We have a database of 3 TB and in a few months with migrating to a SAN storage 8 TB of HP with SAS 15 K disks nine. I have no idea how the disks are configured, but the faster they are RAID 0 + 1. Of course, this system is a data warehouse. The vast majority of reports must be run on about 150 GB of data most recently added. The system includes 8 PA-RISC processors and 16 GB of RAM, but we could opt for Oracle RAC with 3 these systems (instead of 1 we use now).

Is could someone please tell me if the SSD will offer all the advantages of this system? If so, what are we supposed to do? Tablespace Temp? Redo logs? Archive logs? Request for verification of output? Let's keep each month in its own tablespace and I thought maybe we could welcome the current month, where almost all reports are ran, in the SSD and at the end of the month move it to the HARD drive-based SAN storage. This configuration is feasible or is it too complicated for a vital production environment?

Thank you.
restructuring of the database to make the best use of the SSD

Not necessary, if you map your data o tablrespaces files correctly.

Just move data I/O files on the SSD, no restructuring device is necessary.

I wanted the opinion of someone who has had experience with SSD and Oracle first hand.

And you mine. I've used SSD for four years, love them! I have a database of 80 GB and SSD relief runns full fast.

Computer do not normally sleep wake up and the computer hang when external USB devices are connected

Hello

I have a Windows 7 Home Premium 64-bit desktop CyberPowerPC, and there are currently two problems with it:

1.), I have two USB ports in the front of my case. I am connected to my computer. Then I tried to connect my external hard drive using the USB cable supplied with it, but just at the moment where the end of the USB cable touched the port, the screen is black and automatically rebooted and froze when the display shows the brand CPU that is before the login screen. I actually press the restart on my case button to restart the computer with the hard drive already plugged. Then everything should work normally.

It's the same thing when I tried to connect my iTouch 2nd generation.

This problem occurs sometimes, however, but I wonder if someone always has a solution to this?

2.) whenever I put the computer to sleep and he remains asleep for a while and I turn it on it once again, powers for about 2 seconds then it turns off. I have to turn the power supply and light in the order so he could get out of mode 'sleep'.

I was wondering if you have solutions to this problem, as well.

Thank you.

Original title: new Windows 7 problem

Ok.. I'll try again...

The problem is caused by a bad 'ground' between the USB ports of the case and the motherboard. Static electricity is originally the USB device to short on the USB port which is originally the motherboard restart mode.

I had the same problem and got my computer case exchanged. The problem has not entirely disappeared, and I use the USB port on the front on the card reader, just in case.

It can also be a problem with the power supply or even the motherboard. It is very difficult to locate the failure without replacing in turn, a process that happens to be a bit expensive.

The above is the reason why I recommend that you contact the MANUFACTURER. Don't take no for an answer off the manufacturer or supplier. It is a problem annoying which can eventually damage your operating system if it is enough...

I use Lightroom 4.4 on windows 8. Less than 500 photos on the catalog and the catalog size is currently at 2.16 GB. Lightroom works fine, but I'm taking a risk by leaving the catalog to grow beyond 2 GB?

I use Lightroom 4.4 on windows 8. If I have less than 500 photos on the catalog, I do a lot of alterations and cleaning of the images and therefore the size of the catalogue is currently at 2.16 GB. Lightroom works fine, but I'm taking a risk by leaving the catalog to grow beyond 2 GB? Should I close it and start a new catalog? Thanks for your suggestions.

Many local adjustments (brush strokes, spot healing) can have a huge impact on the overall size of the catalog because they are all saved as stages of the individual history and so I wouldn't worry - there is nothing wrong with your catalog. See my thread here since a few years back: which affects the size of the Lightroom catalog file? where Rob Cole usefully thought of it for me.

You could delete the history if you wanted and that I'd be willing to bet that the size would be reduced considerably. That said, my catalog file is larger than 10 GB (as I do a lot of local changes as stated in the thread I linked to) and it causes no problem at all, apart from resulting in a backup of slow catalogue (my previews resume another 30 GB or more). I have not yet felt the need for the history of the Reformation, but doing so probably would increase my catalog to about 1 GB, so it's an option if size becomes a problem for me.

My advice: continue anyway and don't worry in this regard.

M

After Effects for export and the maximum size of the file

Hello
I'm new to the area of the entire animation and have a question of export format.
My project is set to 1920 x 1080 (29 seconds) and I need to export less than 100 MB for display on the web at about 1090x620px (Australian standards). The accepted formats are mpg/mp4/flv/avi/mov/wmv. Someone has any advice on the best export settings in this case?
Thanks heaps for all help.
=) The

What do you mean by 'the Australia Standard? 1090 x 620 no standard exists to my knowledge.

The file size of 100MB for 29 seconds video online is huge, and I can't imagine any web viewer sitting around waiting 10 minutes for the 29 seconds of the video to download. What, precisely, do you online with this file? Wherever it is affected and who is the audience target?

In Australia, among the main companies of distribution of media TV is AdStream. They distribute 30 second standard def TV commercials for television networks to the Quicktime H264 format. They ask files compressed to 15000 kbps, resulting in sizes of files about 30 to 40 MB for a TVC 30 sec. Maybe that's a good basis for your own encoding, according to what the goal is.

But, as I mentioned earlier, it is strictly for viewing online, I would aim to keep the size of your much smaller file - 10 MB max.

ALTER Table of the default Oracle and the length of name of column Type
Hi all

I want to increase the length of the table names and the names of the columns in Oracle.

By default, it is set like this:

SQL > dba_tab_columns desc;

TABLE_NAME NOT NULL VARCHAR2 (30)
COLUMN_NAME NOT NULL VARCHAR2 (30)
...

Is it possible to change the VARCHAR2 (30) to VARCHAR2 (100)?

Published by: sukrandere on 12:21 10.Mar.2010
Table names and column are all two identifiers
According to the documentation, the maximum length of an identifier is 30 characters.
It is hard coded in the database software and you can't change it.
Or do you need to change.

---------------
Sybrand Bakker
Senior Oracle DBA

Control the width of the Table and the font size in the OPS
Hello

I have a form OPS page which has a classic table. The table has about 50 columns. Because of this user needs to scroll horizontally to see all columns. Is it possible to display all 50 columns in the current visible window (i.e. without using horizontal scrollbar)? Is it possible to control the display of table width and to reduce the font size to 8pt and 9pt so that all fields are visible without scrolling?

Any comments on it would be a great help.

Thank you
Shree
use "OraCopyright" as a CSS class, it will reduce the size of the font at 8pt.

But even if you use all these, which can accommodate 50 columns can be difficult in a single line.

Prasanna-

When I open the browser Firefox with Yahoo home page. Images and the font size is so small, I can hardly read it. Frustrated! Tim

I was on the Firefox help page and tried everything that was suggested. I have yet to find a default selection value where I can put my home page to open to say 125% or a way to have it open where I don't have to enlarge each page - whenever I open it.

You can increase the chain pref layout.css.devPixelsPerPx from 1,0 to 2,0 to 0.1 or 0.05 as follows to adjust the size of all fonts and other elements in Firefox (percentage divided by DPI, for example 150% / 96).

In current versions of Firefox this pref is a string parsed in float value and allows you to adjust the dimensions of all elements (user interface and web pages) more precisely.

To open the topic: config page, type Subject: config in the address bar (address) and press the 'Enter' key, as you type the url of a Web site to open a Web site.

If you see a warning then you can confirm that you want to access this page.
- Use the filter at the top bar of the on: page config to more easily spot a preference.
- Preferences that have changed see the bold (user set).
- Preferences you can restore the default value or change via the context menu.

I want to change my style and the font size on my google calendar

I want to print my calendar google in monthly format. I need to display items in small characters and fonts in order to be able to read. I can't get the font style or size change.

Hello

· What browser are you using to print Google Calendar?

You can check the link below which holds information on printing your calendar: http://www.google.com/support/calendar/bin/answer.py?answer=41067

For assistance on the concern, I suggest you to contact Google support. Link, please refer to: http://www.google.com/support/calendar/?hl=en

Office has increased in size and the print size is almost double.

Original title: Hi, my office decided to increase in size - how to decrease (printing is almost double than it should be). Thank you.

Printing has suddenly increased - how I reduce to normal size please? Thank you.

Hi GlenisRhodes,

1. What is the brand and model of the printer?

2. This occurs when you try to print from a specific program?

3. when the problem started?

4. did you of recent changes to the computer?

You can try to change the resolution of the screen and check.

Change the screen resolution

You can also try to print a test page and check.

Print a test page

Hope this information is useful.

Oracle and the segment size of external storage block size

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