Advantage of using RAW devices for storing database

Hi,
Marry Christmas to all.
Oracle 10g version 10.2.0.1.0 (rac)
OS : HP-UX 11i
I am new to this enviornment. We are using raw devices for storig the database.
Please tell what are the advantages for using raw devices for storing the database?
Thanks.

http://www.fors.com/orasupp/unix/37914_1.HTM
The above link explains the raw devices and advantages.

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Problem in using context param for storing database connection information

Hello Friends,
I am new to struts & jsp.I am developing a project in struts.I have 1 jsp page called editProfile.jsp.On submitting this page it will call 1 action class.The action class in turn will call the Plain old java class where I have written the logic for updating User Profile.
I have created context-param in web.xml for database connection information like dbURL , dbUserName , dbPassword , jdbcDriver.Now I want to use these connection information in my Business logic(Plain Old Java Class).As we can use context parameter only in jsp & servlets , I am setting the variables of my business logic class with these context param in jsp itself.
now when I am calling the updateProfile method of Business logic class from Action class it is giving error as all the connection variables which I set in jsp for my business logic class has become null again.
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This is the code I have written
web.xml file
<context-param>
<param-name>jdbcDriver</param-name>
<param-value>oracle.jdbc.driver.OracleDriver</param-value>
</context-param>
<context-param>
<param-name>dbUrl</param-name>
<param-value>jdbc:oracle:thin:@localhost:1521:gd</param-value>
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<context-param>
<param-name>dbUserName</param-name>
<param-value>system</param-value>
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<context-param>
<param-name>dbPassword</param-name>
<param-value>password</param-value>
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EditProfile.jsp
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<jsp:useBean id="EditProfile" scope="application"
class="com.myapp.struts.EditProfile"/>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Edit My Profile</title>
</head>
<body>
<form action="submitEditProfileForm.do" focus="txt_FirstName" method="post">
<%
EditProfile.setjdbcDriver(application.getInitParameter("jdbcDriver"));
EditProfile.setdbURL(application.getInitParameter("dbURL"));
EditProfile.setdbUserName(application.getInitParameter("dbUserName"));
EditProfile.setdbPassword(application.getInitParameter("dbPassword"));
-----------more code goes here------------
EditActionProfile.java
package com.myapp.struts;
import javax.servlet.jsp.jstl.core.Config;
import org.apache.struts.action.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
public class EditProfileAction extends Action {
public EditProfileAction()
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws Exception
try
if (isCancelled(request))
return mapping.findForward("mainpage");
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EditProfile.java class (My Business Logic Class)
package com.myapp.struts;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.*;
public class EditProfile {
private String dbURL;
private String dbUserName , jdbcDriver;
private String dbPassword;
private Connection con;
private Statement stmt;
public EditProfile()
public void setdbURL(String s )
this.dbURL = s;
public void setdbUserName(String s )
this.dbUserName = s;
public void setdbPassword(String s )
this.dbPassword = s;
public void setjdbcDriver(String s )
this.jdbcDriver = s;
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try
String s1 = new String("update usr set first_name='" + firstname + "' , middle_name='" + middlename + "' , last_name='" + lastname +"' , address='" + address + "' , email_id='" + email + "' where usr_key=1" );
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System.out.println("after excute update");
stmt.close();
if(rslt>=1)
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finally
if (null != con)
con.close();
public Connection init() throws SQLException, ClassNotFoundException
Class.forName(jdbcDriver);
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How can i use raw device in oracle 9.2.0.4

can i use "create tablespace XXX datafile '/dev/raw1' ..." to use raw device for tablespace? Or i should use "ln -s /dev/raw1 /oradata/xxx.dbf"?
does raw device as same as "xxx.dbf" is limited 4GB ?
pool english.

hi,
as far as windows NT OS is concerned,,there's a utility (OCOPY) to store ur datafiles on to raw devices,,,but u cant directly access that datafiles for runtime databases,,its just for backup purposes..
umar

Using raw device

Good morning,
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Veera

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Here is my command :
declare
GET VARCHAR2(50);
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exception
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HT1918 Hello! Staff of E4 Group JSC use Apple devices for call, reading email and calendars. When the user open event in calendar of iPhone or iPad, he does not see attachments (picture №1, picture №2). But it is possible on Blackberry (picture №3).

Hello!
Staff of E4 Group JSC use Apple devices for call, reading email and calendars. When the user open event in calendar of iPhone or iPad, he does not see attachments (picture №1, picture №2). But it is possible on Blackberry (picture №3). How user of Apple can see these attachments? Recommend please any apps for it.

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Hi there,
I am trying to use a raw device on AIX 4.3.3 for ORACLE 8.1.7.
I have created a raw device /dev/or_system
brw-rw---- 1 oracle dba 54, 1 Mar 04 10:44 or_system
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Eg mklv -y 'myfile' <vgname> <number of logical partitians>
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Hi all.
scene:
oracle 8.1.6.1
Linux red hat 6.1
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null

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If i created a tablespace with the .dbf extension i am able to create the tablespace. on other hand if i use .dbf extension it;s failing..
can anyone help me out why it is happening??
here is the code...
Oracle9i Enterprise Edition Release 9.2.0.8.0 - Production
With the Partitioning, Real Application Clusters, OLAP and Oracle Data Mining options
JServer Release 9.2.0.8.0 - Production
SYS at terac >
SYS at terac >CREATE TABLESPACE FLOW_1 DATAFILE
2 '\\.\FLOW_1' SIZE 10304 K REUSE AUTOEXTEND OFF
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4
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++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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SYS at TERAC >/
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My installation, ASM On SI
S.O HP-UIx
Disk internal, not SAN
Internal disk configuration for Oracle.
PV Name /dev/dsk/c11t0d0
PV Name /dev/dsk/c11t1d0
PV Name /dev/dsk/c11t2d0
PV Name /dev/dsk/c11t3d0
PV Name /dev/dsk/c11t4d0
PV Name /dev/dsk/c11t6d0
Vg:
/dev/vgora
Lv
/dev/vgora/lvu01 <-- Oracle Bin mounted /u00
/dev/vgora/lvu02 <-- External Archive /u02
In /dev/vgora
brw-r----- 1 root sys 64 0x010001 Mar 8 14:42 lvu01
brw-r----- 1 root sys 64 0x010002 Mar 8 16:15 lvu02
brwxrwxr-x 1 root sys 64 0x010003 Mar 19 14:19 lvasm01
brwxrwxr-x 1 root sys 64 0x010004 Mar 19 14:20 lvasm02
brwxrwxr-x 1 root sys 64 0x010005 Mar 19 14:20 lvasm03
brwxrwxr-x 1 root sys 64 0x010006 Mar 19 14:20 lvasm04
brwxrwxr-x 1 root sys 64 0x010007 Mar 19 14:20 lvasm05
brwxrwxr-x 1 root sys 64 0x010008 Mar 19 14:20 lvasm06
brwxrwxr-x 1 root sys 64 0x010009 Mar 19 14:20 lvasm07
brwxrwxr-x 1 root sys 64 0x01000a Mar 19 14:20 lvasm08
brwxrwxr-x 1 root sys 64 0x01000b Mar 19 14:20 lvasm09
brwxrwxr-x 1 root sys 64 0x01000c Mar 19 14:21 lvasm10
crw-r----- 1 root sys 64 0x010001 Mar 8 14:42 rlvu01
crw-r----- 1 root sys 64 0x010002 Mar 8 16:15 rlvu02
crw-r--r-- 1 root sys 64 0x010000 Mar 8 14:19 group
FOR ASM
crw-rw---- 1 oracle dba 64 0x010003 Mar 19 14:19 rlvasm01
crw-rw---- 1 oracle dba 64 0x010004 Mar 19 14:20 rlvasm02
crw-rw---- 1 oracle dba 64 0x010005 Mar 19 14:20 rlvasm03
crw-rw---- 1 oracle dba 64 0x010006 Mar 19 14:20 rlvasm04
crw-rw---- 1 oracle dba 64 0x010007 Mar 19 14:20 rlvasm05
crw-rw---- 1 oracle dba 64 0x010008 Mar 19 14:20 rlvasm06
crw-rw---- 1 oracle dba 64 0x010009 Mar 19 14:20 rlvasm07
crw-rw---- 1 oracle dba 64 0x01000a Mar 19 14:20 rlvasm08
crw-rw---- 1 oracle dba 64 0x01000b Mar 19 14:20 rlvasm09
crw-rw---- 1 oracle dba 64 0x01000c Mar 19 14:21 rlvasm10
And the problem is:
When i run dbca for create diskgroup, that not recognize the disk.
I will set asm_diskstring with the correctly path.
I try to create a diskgroup from command line, but i see this error.
SQL> create diskgroup DG_DATA_01 external redundancy DISK '/dev/vgora/rlvasm01' ;
create diskgroup DG_DATA_01 external redundancy DISK '/dev/vgora/rlvasm01'
ERROR at line 1:
ORA-15018: diskgroup cannot be created
ORA-15031: disk specification '/dev/vgora/rlvasm01' matches no disks
ORA-15025: could not open disk '/dev/vgora/rlvasm01'
ORA-15059: invalid device type for ASM disk
Additional information: 255

Advantage of using RAW devices for storing database

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