Proper database layout

I'm looking for some advice on setting up a database with regards to the log files and data files. I come from a SQL Server background and figure some of the basic ideas will follow across to Oracle.
In SQL Server, I would create two partitions on the system, a RAID 1 for my operating system, SQL Server 2005, the master database, and the log files for my user databases. The second would be a RAID 5 partition for the data files for my user databases and nothing more. I assume this is what you'd do in Oracle as well. Is that accurate?
Also, is there a database/schema in Oracle similar to the master database in SQL Server? Is it advisable to move that off to a faster partition in Oracle as it is in SQL Server?
Any information regarding best practices for database layout is greatly appreciated.

the master database in SQL Server is nothing but the SYSTEM tablespace in Oracle which contains all the dictionary and all other database related information. Going with LOCAL MANAGED TABLESPACE and with SEGMENT SPACE MANAGEMENT AUTO are best for automatic management of space. Users tablespace must be created separate from SYSTEM tablespace to relieve contention in database.

Similar Messages

TIPS(25) : CREATING A DATABASE LAYOUT

제품 : SQL*PLUS
작성날짜 : 1996-11-22
TIPS(25) : CREATING A DATABASE LAYOUT
=====================================
The script below is one I used quite frequently when I was with
Oracle Consulting.
It is handy for walking into a company and getting a quick layout of
their database.
I call it dbmap.sql.
spool dbmap.txt;
prompt
prompt ======================================
prompt Tablespace/Datafile Listing
prompt =====================================
prompt
prompt
column "Location" format A30;
column "Tablespace Name" format A15;
column "Size(M)" format 999,990;
break on "Tablespace Name" skip 1 nodup;
compute sum of "Size(M)" on "Tablespace Name";
SELECT tablespace_name "Tablespace Name",
file_name "Location",
bytes/1048576 "Size(M)"
FROM sys.dba_data_files
order by tablespace_name;
prompt
prompt ======================================
prompt Redo Log Listing
prompt =====================================
prompt
prompt
column "Group" format 999;
column "File Location" format A40;
column "Bytes (K)" format 99,990;
break on "Group" skip 1 nodup;
select a.group# "Group",
b.member "File Location",
a.bytes/1024 "Bytes (K)"
from v$log a,
v$logfile b
where a.group# = b.group#
order by 1,2;
prompt
prompt =====================================
prompt Rollback Listing
prompt =====================================
prompt
prompt
column "Segment Name" format A15;
column "Tablespace" format A15;
Column "Initial (K)" Format 99,990;
Column "Next (K)" Format 99,990;
column "Min Ext." FORMAT 990;
column "Max Ext." FORMAT 990;
column "Status" Format A7;
select segment_name "Segment Name",
tablespace_name "Tablespace",
initial_extent/1024 "Initial (K)",
next_extent/1024 "Next (K)",
min_extents "Min Ext.",
max_extents "Max Ext.",
status "Status"
from sys.dba_rollback_segs
order by tablespace_name,
segment_name;
spool off;

Thanks guys. I'm still trying to learn the programs mentioned. For a person who knows nothing about databases FileMaker was pretty easy to work with. The downside was that it doesn't work with images so well. I was thinking of testing Smart Catalog an extension for InDesign by WoodWing next. Or maybe XCatalog or InCatalog. I'm not too sure Portfolio is right for me, it's great if I wanted to catalog my products with metadata - like a inventory list - but I don't. I want to take the product information from a access/excell file, import it into some type of a catalog program where i can design the layout then save the file as a PDF so I can send it to get professionally printed.
The extension for InDesign might be my best bet, especially since I'm a tad familiar with it. Or Quark, I haven't tried it yet but it seems promising. Thanks for all the suggestions - I'd be lost without all your help.

Proper database reqd for E71 - suggestions please

I have to keep a list of my customers and the jobs I do for them with me at all times. I have approx 2000 customers with an average of 4 jobs each. This will obviousl;y grow as time goes on (hopefully!) Currently, thi sis all kept on a Psion series 5MX Organiser.
I bought my E71 in the hope that my aging Psion would finally get retired as I'd seen that I could buy Handbease for S60 so thought my problem resolved. However, it turns out I can't use forms with the S60 version making it as much use as a bloomin chocolate fireguard...
Does anyone have any suggestions for a 'proper' database application that can be used on the E71 or anyother phone for that matter?
Many thanks
David

Quickoffice Premier and keep the data in a spreadsheet?
There's also, e.g., this:
http://my-symbian.com/s60v3/software/applications.php?name=Mobile_Database_Viewer_Plus&fldAuto=215&f...

Need advice on whether to build a traditional database layout or a property bag lookup format for new application?

Hi,
This may be a little of an open ended question, but Id like to ask the crowd as I have a delema to whether or not to use a standard database design or a propertybag/flatfile format and transform the information within my application?
THE SITUATION (EXAMPLE)
We have a table called "people". And these persons can either be a basic contact or be associated to several other "types" such as a member, a representative, a staff member with login details etc. These types are expected to expand
and may need additional fields adding to them.
A: The old fashioned poor approach is to create a table with all the unused columns and simply ignore what we don't need.
B: After normalisation, the traditional approach would be to have link table and each "type" would have its own table with the separate columns needed.
C: Lasty, we have recently done some projects using matrix and property type lookup tables (e.g. a reference table to hold the persons ID, then the columns held in a single properties table of "propertyname and proteryvalue". When the application
"gets" the record it can return a completely dynamic length column list based on how many properties it finds. I.e. Person 1 have only their email address and name in the property bag so the datatable returned in code would be 2-3 columns (inc
id). Person 2 has lots of properties and so their datatable would be returned in code with many more columns.
I hope that makes sense?
THE DILEMA
If I was only using our application to access the data then I could setup a function library to control the access, but I asl want to use report editors (maybe SQL report Services?). And the customer would get completely confused to know which field
is what and how to get the data out? I also want to avoid situations where the application expects someone to have a property (column) and its not there? It may make a difference if I tell you that they will aslo have tables holding heiracrchical
groupings too, which will already make it hard for the customer to use in SQL Report Services. Should I use the traditional approach and the metastable (property bag) approach?
PROS AND CONS of B:
+Traditional approach and most tools that need to access SQL directly will work, assuming the customer understands the column names properly
-A single field change would likely involve all levels of MVC (model, Controller, View) so 3 times the work (maybe 3 people if using specialist SQL Admin, C# Dev and Interface Designer)
-New person types require a whole new table to be linked in
-Global searches need to constantly be updated to include other tables columns
+Our development suite (Visual Studio) allows more visual designing in the IDE when the table is fixed
PROS AND CONS of C:
-Cant see the record easily in SQL directly
-Would have to make any report editor use datasets within an the app rather than direct to SQL directly, making the whole system dependant on a proprietary APP control system (although we would control this anyway)
+Global searches are very good, as all properties are held in a column
-The property table would grow quote big, so needs good indexing
+Any new fields or field groups (types) would simply be a configuration setting in the app (not any manual admin)
+If any presentation of data changes where needed this is likely to only require the controller (developer) on MVC to input changes (assuming the interface expects dynamic fields)
-The tables to show to the user through the app would need to handle dynamic columns and so would need to have generic auto formatting in code (which we could not see in the designer (Visual Studio) and set exactly as required). Slight guess work, but we
could hold setting in the property bag to indicate how to show that property.
A little bit war and peace, but your thoughts?
Kindest
Martin
PS: Some of you may raise the option of stored procedures, in order to do the transform without SQL still. Would this be viable and still work with SQL Report Services?

You ARE using a RDBMS and you appear to intend to use standard development tools. Therefore you will probably regret any attempt to move away from a properly normalized relational database. And that does not begin to address any performance
aspects.
Option A really should not be considered an option. That is not proper normalization for a relational database.
As best I can tell option C is simply an EAV (Entity Attribute Value) model - and you can search on that term for discussions about the pros and cons.
Lastly, AFAIK reports / SSRS can use stored procedures as information sources - that really isn't a design issue. However, if you choose option C then you most likely will be forced to use procedures for reporting purposes.

Can't get rid of border in database layout

I am creating labels from a database for the Cub Scouts. The database field is surrounded by a thin black border. I can change the thickness of the border, but I cannot get rid of it with the "no line" option. Is it possible?
Appleworks 6.2.9; label has gradient background; font color black.

Dalgor2 wrote:
It turns out that the layout mode puts a border in but that border disappears when in browse mode. I wish they didn't do that as it is confusing, but all is right with the world.
The border around field frames in Layout is to let you see where they are, a very useful feature. The same borders also appear in Browse for individual fields when you place the insertion point in the field. This is also useful, as it initially shows what part of the field contents will be visible when the insertion point is NOT in the field.
Regards,
Barry

Database layout with XML

I'm a java dev, not an oracle admin, so please be gentle!
I've mapped the physical structure of 10 types of devices to 10 XML schemas. These devices have a lot of common attributes (id, location, usage, etc) so I've kept these out of the schemas and, instead, wanted to store them in the DB relationally.
My first instinct was to create a table like:
id varchar2(20),
inventory_xml sys.xmltype
location varchar2(20)
usage varchar2(20)
If I wanted to use Oracle XML DB, though, the "inventory_xml" field does not contain the same type of XML element, because they can be any of 10 different devices, so I can't map the column to a schema. The solutions I came up with are:
1) Wrap the elements in a "device" element so that they are all the same element type. This seems like a hack, however, and goes against the spirit of XML DB.
2) Create a table for each device type, which includes the "id" as a foreign key and the xml data. Then, in the main table, replace the "inventory_xml sys.xmltype" column with "device_type_table varchar2(20)" which stored the name of the correct table.
I have no idea whether this is a good database practice or not, so any suggestions would be appreciated. The reason I want to use XML DB is that the extracts are super fast when you map the xml fields to schemas so queries would take milliseconds instead of 10's of seconds.

garcol wrote:
Hello,
I would like to refresh a region based on a database procedure (it generates html/xml/javascript with SVG).
The layout of the region is generated by the procedure. But when the data changes, the region layout has to change too.
That's why I have made a button with label 'Refresh Region'. I was hoping when a user clicks on it, the region is refreshed. But it does not work (via Dynamic action).
How do I make the region refresh (actually run the procedure again and show the result..).The built-in Refresh dynamic action can only refresh interactive reports, standard reports, charts, and list regions. My initial approach would therefore be to consider rewriting the procedure as a standard report. (I have rarely—if ever—seen a Dynamic PL/SQL region that isn't better implemented as a report with a custom template.)
The other obvious possibility would be to run the procedure as an on-demand process and display/refresh it using an AJAX/JavaScript DA.

Database Layout Compromise

I am on a short term assignment at a utility. The database in
question is about 11G in size. It is V 8.1.6 on Open Alpha VMS V
7.2-1. It supports 11 applications, all low OLTP - high query
applications. It is hot backed up/archived. Until yesterday, all
of the files were on 2 (slow) RAID1 volumes(each one disk).
Yesterday, two RAID5 volumes (each volume has 2 disks + 1
parity) were made available to this database. So, I recommended
(for starters) moving (renaming) all of the table data files to
Volume 1 of the RAID5 volumes, index data files Volume 2. This
appears to be working quite nicely. However, all of the other
files (redo, rollback, temp, system) have remained on the old
RAID1 disks. Here is that layout on those two volumes:
Volume3 (Raid 1)
Temporary tablespace #1 datafile
Temporary tablespace #2 datafile
System tablespace datafile
Rollback tablespace #1 datafile
Redo Logs "A" mirror
Volume4 (Raid 1)
Temporary tablespace #3 datafile
Temporary tablespace #4 datafile
Rollback tablespace #2 datafile
Redo Logs "B" mirror
Archived Redo Logs
Please don't ask why there are 4 temp tablespaces! The
explanation I got caused me to lose even more of my hair.
My proposal, given the limited volumes available, is as follows:
RAID5 Volume 1
(This volume currently has all of the table data datafiles.)
1.Move all of the temporary tablespace datafiles over here with
the table data. Obviously, I would not want these with the Index
datafiles. I should mention that all of the temporary
tablespaces are defined as type temporary, but not using
tempfiles. There are very few sorts taking place on disk. That
ratio is excellent. The sort area size is adequate.
2.Move the archived redo logs here as well. (Or would putting
them with the index datafiles be better?)
RAID5 Volume 2
(This currently has all of the index tablespace datafiles.)
No change, unless we put the archived redo logs here, as
mentioned above.
This would leave the mirrored redo logs on Volume 3 and 4
(RAID1), and one rollback segment tablespace datafile on each of
those RAID1 volumes. (Or is is better to put rollbacks on the
RAID5 volumes, and keep Temp tablespaces on the Raid 1 volumes
with the redo logs?) No matter where I put those danged rollback
datafiles, they conflict with something else!)
From my personal experience and reading various books and posts
on datafile layouts, the above recommendation seems to be the
most reasonable compromise to me. I know that it is frowned upon
to put temp or rollback on RAID5, but it is equally frowned upon
to have them on the same RAID1 volumes, especially when redo
logs are also there! I will greatly appreciate all opinions on
possible alternatives!

"List" mode is a specific layout that includes all of the fields, and places them in a spreadsheet-like grid. Your only options are the widths of the columns, the heights of the rows, and the order of the columns.
For a page that displayes only some of the fields, you must create a new layout that contains only those fields. If you want its appearance to be similar to List view, choose a "Columnar Report" as the type of layout to create.
Regards,
Barry

How to improve the printing quality of pictures, printing a database layout

I have a database that contains also pictures in multimedia containers. If I print a layout containing a picture, the quality of the picture is really bad! Pixeled with big pixels.
Is there a possibility to get better prints?
The pictures are JPEGs of reasonable size.
The picture in the layout on the screen looks MUCH better.
Printing to an PDF and viewing this on the screen is equally bad.
Any suggestions?
Thanks!

I'm guessing that your images are JPEGs. AppleWorks changes the resolution of all graphic formats except PICT to 72 dpi. There are a couple of things you can do improve the print quality of images.
1. Turn on Fractional Character widths in Preferences > General > Topic: Text. This is a text setting, but it does improve the print quality of images.
2. Open the image in Preview or GraphicConverter & Save As... a PICT to use in AppleWorks.
PICT is generally the best format to use for inserting or pasting into AppleWorks. I find the resulting graphic can be resized somewhat & the resulting saved AW file is much smaller than if using JPEG or TIFF.

Database layout crashes appleworks

good morning. I am using AW 6.2.9 on an iBook G4 w/ OS 10.4.11.
In one of my databases, one layout crashes the program whenever I try to view it in layout mode. I can see in it Browse, and I can see every other layout in both browse and layout. Obviously, it worked at when I first created the layout, so I'm not sure what happened. I've tried creating a new duplicate layout, but it crashes too (but not a new blank one). So other than recreating the whole layout from scratch, can anyone advise why this might be happening and how it can be resolved. Thanks!

Have you added any objects to the layout? The layout editing mode is actually a draw environment & it's possible an added object is corrupt. I don't know how you would be able to delete objects if you can't view it, so I think you might have to recreate it. One thing to try, before going through that, is to save the database as an AppleWorks 5 document & then open this AppleWorks 5 document in AppleWorks 6. There is the slight possibility that this will strip the corruption. You do not need to have AppleWorks 5 to do this.

Database Layout problem

Appleworks 6.0, I'm trying to print a database with only SOME of the existing fields, using specific search criteria. I've saved the searches, created a new layout with only the fields I want to see, but it is only visible in "browse" mode . . . when I try to switch the new layout to "list mode" it shows ALL of the fields!
What am I missing please? THANKS!
Neil
G4 Mac OS X (10.3.9)

"List" mode is a specific layout that includes all of the fields, and places them in a spreadsheet-like grid. Your only options are the widths of the columns, the heights of the rows, and the order of the columns.
For a page that displayes only some of the fields, you must create a new layout that contains only those fields. If you want its appearance to be similar to List view, choose a "Columnar Report" as the type of layout to create.
Regards,
Barry

I updated sys.props$ database will not open

In an attemp to modify the Character set I updated the sys.props$ table to a new character set. Until the database was shutdown everythig was fine.
Now when I startup I get the following message:
ORA-01092: ORACLE instance terminated. Disconnection forced
and in the trace file I get:
ORA-12701: CREATE DATABASE character set is not known
When I updated the sys.props$ table I used 'USASCII7' as as value.
Is there a way to start the database in the mount stage and modify the character set back to WE8ISO8859P9 by updating the fixed properties?

Do NOT try to alter oracles dictionary views again, unless you are told to by oracle. That being said, after you have recovered your database follow the procedures at the following link:
http://download-west.oracle.com/docs/cd/A87860_01/doc/server.817/a76966/ch3.htm#47136
Restore your last backup of the database before the change and do a point in time recovery to just before you altered the table. That will recover you database.

ERP 2005/UDB 8.2 - Database Layout

I'm looking through the install DVD trying to find the DB layout/install script. Does anyone know when I can find it? (space requirements and layout info).
Thanks!

Hi,
to look at the layout at table level does not make much sense in my opinion. Even from a planning view.
All tables are stored in tablespaces, which are made up by containers on filesystem-level. So the interesting question is: How much size is needed for which tablespace and how to distribute the containers. For a rough space estimation you could look into the appropriate SAP-note (depending on the Release you install, check the installation guide for this note) or look into the file DBSIZE.TPL (R3setup) or DBSIZE.XML (SAPinst), which is located on the first Export Disk of the installation CDs / DVDs.
When you are planning your disk layout be aware not to mix up certain type of files (online-log-files, temp-tablespace, data-tablespaces) on the same disks. Depending on the I/O-rate (SAPS, transactions-rates) of your system you should use enough disk controllers and "spindels".
By the way: Why do you do not use DB2 9?
Kind regards
Waldemar Gaida

Unable to connect to Oracle database running on Windows machine from linux.

Hi,
I'm not able to connect to oracle database running on Windows machine from Linux machine. I'm geting the below mentioned error. I have given below the code I used to connect to database and database propertes.Do I need to use any specific driver?
Please help me.
Thanks,
Sunjyoti
Code :
import oracle.jdbc.pool.OracleDataSource;
import java.sql.Connection;
import java.util.*;
import java.sql.*;
import java.io.*;
class try2{
public static void main(String args[]) {
try {
          System.out.println("hi");
// Load the properties file to get the connection information
Properties prop = new Properties();
prop.load(new FileInputStream("/home/sreejith/EDIReader/Connection.properties"));
// Create a OracleDataSource instance
OracleDataSource ods = new OracleDataSource();
System.out.println("prop is "+prop);
configureDataSource(ods, prop);
Connection conn=null;
// Create a connection object
conn = ods.getConnection();
     System.out.println("Connection is"+conn);
// Sets the auto-commit property for the connection to be false.
conn.setAutoCommit(false);
} catch (SQLException sqlEx){ // Handle SQL Errors
System.out.println("In exception "+sqlEx);
} catch(Exception excep) { // Handle other errors
System.out.println(" Exception "+ excep.toString());
private static void configureDataSource(OracleDataSource ods, Properties prop) {
// Database Host Name
ods.setServerName(prop.getProperty("HostName"));
// Set the database SID
ods.setDatabaseName(prop.getProperty("SID"));
// Set database port
ods.setPortNumber( new Integer( prop.getProperty("Port") ).intValue());
// Set the driver type
ods.setDriverType ("thin");
// Sets the user name
ods.setUser(prop.getProperty("UserName"));
// Sets the password
ods.setPassword(prop.getProperty("Password"));
Connection properties :
# Your Database Connection details
HostName = 10.20.3.19
SID = EDIREAD
Port = 1521
UserName = dbuser
Password = dbuser
Error I'm getting is
error while trying to connect with odbc datasource
[root@iflexpau2217 EDIReader]# java try2
hi
prop is {HostName=10.20.3.19, Password=dbuser, UserName=dbuser, SID=EDIREAD, Port=1521}
In exception java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
Also I tried to connect with weblogic JDBC driver
Code is here:
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
//import com.entrust.toolkit.util.ByteArray;
public class trial{
     public static void main(String args[]) throws IOException{
          System.out.println("hi");
          Connection p_conn = null;
          PreparedStatement xml_insert = null;
          try {
     // Load the JDBC driver
               System.out.println("hi2");
     // String driverName = "oracle.jdbc.driver.OracleDriver";
String driverName = "weblogic.jdbc.oracle.OracleDriver";
     System.out.println("hi2");
     Class.forName(driverName);
     // Create a connection to the database
     String serverName = "10.20.3.19";
     String portNumber = "1521";
     String sid = "EDIREAD";
     //String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber + ":" + sid;
String url = "jdbc:bea:oracle://10.20.3.19:1521";
     String username = "dbuser";
     String password = "dbuser";
System.out.println("connection is:"+p_conn+"user name is"+username+"password is"+password);
     p_conn = DriverManager.getConnection(url, username, password);
     System.out.println("connection is:"+p_conn+"user name is"+username+"password is"+password);
          xml_insert=p_conn.prepareStatement("insert into PRTB_SUBUNIT (SUBUNT_ID,SUBUNT_SUB_UNIT,SUBUNT_PHYUNT_ID) values (?,?,?)");
          //InputStream in=null;
          File l_file=new File("/home/sreejith/EDIReader/propertyfiles/inputfile/BUG_10802_ES_CSB19_68.txt");
          BufferedReader input =null;
          input=new BufferedReader(new FileReader(l_file));
          String line = null;
          StringBuffer trial=new StringBuffer();
          while (( line = input.readLine()) != null){
               trial.append(line);
               trial.append(System.getProperty("line.separator"));
          //InputStream is = new BufferedInputStream(new FileInputStream(l_file));
          System.out.println(trial.toString());
          //Blob b ;
          //byte[] bytes=trial.toString().getBytes();
          //System.out.println("Size-->"+bytes.length);
          xml_insert.setString(1,new String("SpecailChar"));
          //xml_insert.setBinaryStream(2,new ByteArrayInputStream(bytes),15920);
          xml_insert.setString(3,"SpecailChar");
          xml_insert.executeUpdate();
          p_conn.commit();
          } catch (ClassNotFoundException e) {
               System.out.println("ClassNotFoundException:"+e.getMessage());
          // Could not find the database driver
          } catch (SQLException e) {
               System.out.println("SQEXCEPTIN:"+e.getMessage());
          // Could not connect to the database
          }catch (FileNotFoundException e) {
               System.out.println("filenot found:"+e.getMessage());
          // Could not connect to the database
Error I'm getting is
error while trying with jdbc:
SQEXCEPTIN:[BEA][Oracle JDBC Driver]Error establishing socket to host and port: 10.20.3.19:1521. Reason: Connection refused

Is the Windows firewall active? Have you enabled the port on the firewall, if it is?

Database fields at runtime and freetext search

Hi,
We have started to look into Kodo 3.0 and have used the reversemappingtool
for generating java classes for our current database layout. We are
considering if we should use Kodo/JDO to refactor some of old code.
In our old system we have some features which we would like to move
to the new implementation, but we are not sure if this is possible.
1) At runtime we would like to a database field which we can maintain,
use a default value when inserting and update with new value. Can
it be done, do you have any example code ?
2) In addition to 1, it would be nice if we at runtime could make a custom
table and maintain it.
3) Support for freetext search on Oracle and Sybase, how can it
be done, do you have any example ?
Best regards,
Karsten Mathiasen

Hi Kaushik,
You can make use of APPCC class of your FPM application enhance your appcc class and write your logic to the post exit method. There you will have IO_OVP instance and this interface have all the method which can hide tabs from your application on runtime.
But for the field hide you need to dynamically prepare your screen in your feeder class.
For using APPCC you can refer http://help.sap.com/saphelp_nw74/helpdata/en/3e/741ac912a143368cded7cc418a4bc8/content.htm?frameset=/en/f5/823cdb32254707aec436de005e0ada/frameset.htm.
Thanks
Praveen Gupta

Report layout supports each field listed vertically(1 field per row)

I'm basically new to APEX. I have a report that displays 1 record of data with each field(1 per row) listed vertically. When using the default APEX report layout template, the Print attributes(.pdf, xml, online, HTML, etc.), every format prints all fields in one row. Can someone please provide the proper report layout that I can use to get my desired printout?

This is the Oracle Reports forum. Post this in the Apex forum.

Proper database layout

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