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Adding Oracle RAC from Nodes on Windows Systems

How to extend an existing Oracle Real Application Clusters(Oracle RAC) home to other nodes and

instances in the cluster, and delete Oracle RAC

from nodes and instances in the cluster. This chapter provides instructions for

Windows systems.

If your goal is to clone an existing Oracle RAC home to create multiple new Oracle

RAC installations across the cluster, then use the cloning procedures.

"Cloning Oracle RAC to Nodes in a New Cluster".

This chapter includes the following topics:

■ Adding Oracle RAC to Nodes with Oracle Clusterware Installed
■ Deleting Oracle RAC from a Cluster Node

Notes: In this chapter, the entries for Grid_home refer to the full
path name for the Oracle Grid Infrastructure home, and the entries for
Oracle_home refer to substitutes for environment variables for the
Oracle home with Oracle RAC.

Notes:

Ensure that you have a current backup of Oracle Cluster Registry(OCR) before adding or deleting Oracle RAC by running the

ocrconfig -showbackup command.

2. Using Oracle Enterprise Manager to add and delete nodes and instances is not supported on Windows.

3.For all of the add node and delete node procedures, temporarydirectories such as %TEMP% or

C:\Temp should not be shareddirectories. If your temporary directories are shared, then set your

temporary environment variable, such as %TEMP%, to a location ona local node. In addition, use a

directory path that exists on all of the nodes.

Adding Oracle RAC to Nodes with Oracle Clusterware Installed

Before beginning this procedure, ensure that your existing nodes have the correct path

to the Grid_home and that the Oracle_home environment variables are set correctly.

To add Oracle RAC database instances to nodes that already have Oracle Clusterware

installed, you must extend the Oracle RAC home that is on an existing node (node1 in

this procedure) of the cluster to the target nodes.

1. Navigate to the Oracle_home\oui\bin directory on node1 and run the

addNode.bat script using the following syntax, where node2 is the name of the

node you are adding:

addNode.bat "CLUSTER_NEW_NODES={node2}"

2. If you store your policy-managed database on Oracle Automatic Storage

Management (Oracle ASM), Oracle Managed Files is enabled, and if there is space

in a server pool for node2, then crsd adds the Oracle RAC database instance to

node2 and no further action is necessary. If Oracle Managed Files is not enabled,

then you must manually add undo and redo logs.

If there is no space in a server pool, then node2 moves into the Free server pool.

Use the srvctl modify srvpool command to increase the cardinality of the

server pool to accommodate node2, after which time node2 moves out of the Free

server pool and into the modified server pool, and crsd adds the Oracle RAC

This section describes using DBCA to add Oracle RAC database instances under the

following topics:

Using DBCA in Interactive Mode to Add Database Instances to Target Nodes

Using DBCA in Silent Mode to Add Database Instances to Target Nodes

These tools guide you through the following tasks:

Creating a new database instance on each target node

Creating and configuring high availability components

Creating the Oracle Net configuration for a non-default listener from the Oracle home

Starting the new instance

Creating and starting services if you entered services information on the Services

Configuration page

After adding the instances to the target nodes, you should perform any necessary

service configuration procedures,Automatic Workload Management".

Using DBCA in Interactive Mode to Add Database Instances to Target Nodes

To add a database instance to a target node using DBCA in interactive mode, perform

the following steps:

1. Ensure that your existing nodes have the Oracle home environment variable set
correctly.

2. Start DBCA by entering dbca at the system prompt from the Oracle_home\bin
directory on an existing node.

DBCA performs certain CVU checks while running. However, you can also run
CVU from the command line to perform various verifications.

DBCA displays the Welcome page for Oracle RAC. Click Help on any DBCA page
for additional information.

3. Select Oracle Real Application Clusters database, click Next, and DBCA displays
the Operations page.

4. Select Instance Management, click Next, and DBCA displays the Instance
Management page.

5. Select Add Instance and click Next. DBCA displays the List of Cluster Databases
page that shows the databases and their current status, such as ACTIVE or
INACTIVE.

6. From the List of Cluster Databases page, select the active Oracle RAC database to
which you want to add an instance. Enter the user name and password for a
database user that has SYSDBA privileges. Click Next and DBCA displays the List
of Cluster Database Instances page showing the names of the existing instances for
the Oracle RAC database that you selected.

7. Click Next to add a new instance and DBCA displays the Adding an Instance page

8. On the Adding an Instance page, enter the instance name in the field at the top of

this page if the instance name that DBCA provides does not match your existing

instance naming scheme. Then select the new node name from the list, click Next,

and DBCA displays the Services Page.

9. Enter the services information for the new node's instance, click Next, and DBCA
displays the Instance Storage page.

10. If you are using Oracle ASM or a cluster file system, then click Finish on the
Instance Storage page.

11. Review the information on the Summary dialog and click OK or click Cancel to

end the instance addition operation. The DBCA displays a progress dialog

showing DBCA performing the instance addition operation. When DBCA

completes the instance addition operation, DBCA displays a dialog asking

whether you want to perform another operation.

12. After you terminate your DBCA session, run the following command to verify the

administrative privileges on the new node and obtain detailed information about

these privileges where nodelist consists of the newly added nodes:

cluvfy comp admprv -o db_config -d oracle_home -n nodelist [-verbose]

13. Perform any necessary service configuration procedures, as described in

Chapter 5, "Introduction to Automatic Workload Management".

Using DBCA in Silent Mode to Add Database Instances to Target Nodes

You can use DBCA in silent mode to add instances to nodes on which you have

extended an Oracle Clusterware home and an Oracle Database home. Use the

following syntax:

dbca -silent -addInstance -nodeList node_name -gdbName gdb_name

[-instanceName instance_name -sysDBAUserName sysdba -sysDBAPassword password]

database instance to node2.

3. If you have an administrator-managed database, then add a new instance on

node2 as described in "Adding Administrator-Managed Oracle RAC Database

Instances to Target Nodes" Adding Administrator-Managed Oracle RAC Database Instances to Target

NodesBefore adding an Oracle RAC database instance, run the following command on an

existing node to configure Oracle Enterprise Manager on the node where you plan to

add the database instance:

C:\>emca -addNode db

The Oracle Enterprise Manager Configuration Assistant prompts you for database and
node information.

You can use either Oracle Enterprise Manager or DBCA to add Oracle RAC database

instances to the target nodes. To add a database instance to a target node with Oracle

Enterprise Manager,

RAC Mandatory BackGround Process

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About Oracle RAC Background Processes

The GCS and GES processes, and the GRD collaborate to enable Cache Fusion. The

Oracle RAC processes and their identifiers are as follows:

ACMS: Atomic Controlfile to Memory Service (ACMS)

In an Oracle RAC environment, the ACMS per-instance process is an agent that

contributes to ensuring a distributed SGA memory update is either globally

committed on success or globally aborted if a failure occurs.

GTX0-j: Global Transaction Process

The GTX0-j process provides transparent support for XA global transactions in an

Oracle RAC environment. The database autotunes the number of these processes

based on the workload of XA global transactions.

LMON: Global Enqueue Service Monitor

The LMON process monitors global enqueues and resources across the cluster and

performs global enqueue recovery operations.

LMD: Global Enqueue Service Daemon

The LMD process manages incoming remote resource requests within each

instance.

LMS: Global Cache Service Process

The LMS process maintains records of the data file statuses and each cached block

by recording information in a Global Resource Directory (GRD). The LMS process

also controls the flow of messages to remote instances and manages global data

block access and transmits block images between the buffer caches of different

instances. This processing is part of the Cache Fusion feature
.

LCK0: Instance Enqueue Process

The LCK0 process manages non-Cache Fusion resource requests such as library

and row cache requests.

RMSn: Oracle RAC Management Processes (RMSn)

The RMSn processes perform manageability tasks for Oracle RAC. Tasks

accomplished by an RMSn process include creation of resources related to Oracle

RAC when new instances are added to the clusters.

RSMN: Remote Slave Monitor manages background slave process creation and

communication on remote instances. These background slave processes perform

tasks on behalf of a coordinating process running in another instance.

Important Note: Many of the Oracle Database components that this section
describes are in addition to the components that are described for
noncluster Oracle databases in Oracle Database Concepts.

Managing Datafiles

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Tablespaces:

Oracle Stores logically in tablespace and physically the data must be stored in Datafiles.

Datafiles must be created under the Tablespaces.

Tablespace is a place where we can store store the tablespaces object such as tables,indexes.

A Tablespace must contain more than one Datafile.

The total number of storage space available in a tablespace is the sum of the disc size.

Tablespaces are divided into 2 types

1) Small File Tablespace

2) Big File Tablespace

Small File Tablespace:

It contains the 1024 datafiles having 2 ^22 blocks these files restore time is less Datafiles can grow

upto 64GB.

BigFile Tablespace:

It contains Only one Datafile having 2^32 blocks these files restore time is high Datafiles can grow

up to 128 TB.

Based on Space management the tablespaces are divided into 2 types

1) Dictionary Managed tablespace

2) Locally Managed Tablespace.

1) Dictionary Managed Tablespace :

If the space allocation or deallocation information is referred in the data dictionary then such database are called Dictionary Managed Tablespace.

It contains tables that store information that is used to manage extent allocation and deallocation manually.
Each segment has different storage clause.

2) Locally Managed Tablespace:

The space allocation is referred with in the tablespace header. where space allocation or deallocation information managed in the form of Bit-Map Header.

LMT Manages its own extents maintaining a bitmap in each datafile to keep track of the free or used status of blocks in that datafile.
Each bit in a bit-map corresponds to a block or a group of blocks

Clustware Architecture

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Clusterware Architecture:

In Clusterware Architecture there are 2 important files are

1) OCR - oracle cluster Registry.

2) Voting Disks

The above 2 files are stored in shared storage either in Raw Partitions or CFS(Cluster File Registry)

> From 11gR2 , we need to store in CFS or Asm Disk Groups (directly placed in raw has been de-supported)

> OCR File:
Oracle Cluster Registry contains the information of like node names,Ip's Configuration Databases,Listeners ,Services etc that are registered with the cluster.

--> Various clients of OCR are

1) DBCA

2) SRVCTL

3) Enterprise Manager Console

4) VIPCA

5)NETCA

In Order to optimize the performance of the queries on OCR, Oracle RAC follows Distributed "OCR-Cache " Architecture means every node that is participating in cluster maintains a local copy of OCR file in the local memory which is called oracle cache.

OcrCache ---> Ocr Process --> Ocr client into the OCR File.

2) Voting Disks:

Oracle Rac uses the Voting Disk to manage cluster membership by way of a health check and artibrates cluster ownership among the instances in case of Network failures . The voting Disk must reside in share disk.

Oracle Mandatory Background Processes

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Oracle has 2 types of processes are available in oracle Environment.

1) Client Process
2) Server Process

Under Client Process these Processes are responsible for sending a user request to the database

server to fetch the data and display in at client side.

Under Server Process there are 2 types of processes

1) Oracle Server Processes
2) Background Process

Under Oracle Server Process there 3 types of Processes
1)Listener
2)Dispatcher
3)Dispatcher threads

a) Listener: Listener is the first process which accepts the user requests and forward to the Dispatcher.

b) Dispatcher: Dispatcher is the main process ,which accepts user requests from listener , Dispatcher identifies least loaded dispatcher threads and assign user requests to them.

c)Dispatcher threads: Dispatcher threads receives user request from dispatcher for execution .

there 2 types of dispatcher threads are available in every database instance .

i) Dedicated Server Process ii) Shared server Process

Dedicated server Process: These Process are recommended when ever client project is small and parllel connected users are less. For each user one Dediacated server process is allocated to execute the user request.

Shared Server Process: These process are recommanded when ever client project is large and parllel connected users are more. Number of user requests can be executed by one shared server Process.

BackGround Processes:
The Background Process which are used to help to process the Oracle
RECO -Recovery Process is used when then instance get failure it will recovers.

PMON-Process Monitor it will helps when the process failure.

SMON- System Monitor it will helps in when the instance get failure.

DBWR- It is a process It helps to write the databuffercache into the datafiles.

LGWR- It is a process It helps to write data from Redolog Buffer cache to the RedoLog Files, after

it will stored in Archived Destination.

ARC0- It is used to get the redolog files to be stored in Archived Destination.

AP SSC Results 2017

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Andhra Pradesh SSC Results 2017

The Andhra Pradesh Government Results should be Announced tentatively in between in Mid May . Its a Great movement to see what you achieved on the whole year Struggle.The Students who are written for the SSC exams are much awaiting for these Results.All Students are much enjoyed in this Summer, The results will give a chance to move another Step in their life.The School Days are ended after these Results. They have to choose another platform to move in to their Careers after SSC. Wishing you all the best for your Future.

For SSC Results Click on the below link:

SSC Results Website: www.bseap.org

Steps

1) Log in to Website

2) Just Enter your Hall Ticket No

3) After you Click on Submit

4) you will get the Result

The AP SSC Results will be available in these Websites Click Below Links:

www.manabadi.com

www.manabadi.co.in

www.schools9.com

www.bseap.org

Capitals Of All Countries

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I Here by given all the country capitals are given and recently modified(or) changed capitals are also mentioned here. All the Capitals of the countries in the world are given below in Alphabetical Order from A to Z.

Country Capital city

A

Afghanistan -> Kabul
Albania -> Tirana
Algeria -> Algiers
Andorra ->Andorra la Vella
Angola ->Luanda
Antigua and Barbuda-> Saint John's
Argentina-> Buenos Aires
Armenia ->Yerevan
Australia-> Canberra
Austria ->Vienna
Azerbaijan->Baku

Bahamas-> Nassau
Bahrain-> Manama
Bangladesh -> Dhaka
Barbados -> Bridgetown
Belarus ->Minsk
Belgium ->Brussels
Belize ->Belmopan
Benin ->Porto-Novo
Bhutan ->Thimphu
Bolivia ->La Paz (administrative); Sucre (judicial)
Bosnia and Herzegovina-> Sarajevo
Botswana-> Gaborone
Brazil ->Brasilia
Brunei-> Bandar Seri Begawan
Bulgaria-> Sofia
Burkina Faso-> Ouagadougou
Burundi ->Bujumbura

Cabo Verde ->Praia
Cambodia-> Phnom Penh
Cameroon-> Yaoundé
Canada-> Ottawa
Central African Republic-> Bangui
Chad-> N'Djamena
Chile-> Santiago
China ->Beijing
Colombia-> Bogotá
Comoros ->Moroni
Congo, Republic of the-> Brazzaville
Congo, Democratic Republic of the-> Kinshasa
Costa Rica-> San Jose
Cote d'Ivoire ->Yamoussoukro
Croatia ->Zagreb
Cuba-> Havana
Cyprus-> Nicosia
Czech Republic-> Prague

Denmark-> Copenhagen
Djibouti-> Djibouti (city)
Dominica-> Roseau
Dominican Republic-> Santo Domingo

Ecuador-> Quito
Egypt-> Cairo
El Salvador-> San Salvador
Equatorial Guinea-> Malabo
Eritrea-> Asmara
Estonia-> Tallinn
Ethiopia-> Addis Ababa

Fiji-> Suva
Finland-> Helsinki
France-> Paris

Gabon-> Libreville
Gambia-> Banjul
Georgia-> Tbilisi
Germany-> Berlin
Ghana-> Accra
Greece-> Athens
Grenada ->St. George's
Guatemala-> Guatemala City
Guinea-> Conakry
Guinea-Bissau-> Bissau
Guyana-> Georgetown

Haiti-> Port-au-Prince
Honduras-> Tegucigalpa
Hungary-> Budapest

Iceland-> Reykjavik
India-> New Delhi
Indonesia-> Jakarta
Iran-> Tehran
Iraq-> Baghdad
Ireland-> Dublin
Israel-> Jerusalem
Italy-> Rome

Jamaica-> Kingston
Japan-> Tokyo
Jordan-> Amman

Kazakhstan-> Astana
Kenya-> Nairobi
Kiribati-> South Tarawa
Kosovo-> Pristina
Kuwait-> Kuwait City
Kyrgyzstan-> Bishkek

Laos-> Vientiane
Latvia-> Riga
Lebanon-> Beirut
Lesotho-> Maseru
Liberia ->Monrovia
Libya-> Tripoli
Liechtenstein-> Vaduz
Lithuania-> Vilnius
Luxembourg-> Luxembourg

Macedonia-> Skopje
Madagascar-> Antananarivo
Malawi-> Lilongwe
Malaysia-> Kuala Lumpur
Maldives-> Male
Mali-> Bamako
Malta-> Valletta
Marshall Islands-> Majuro
Mauritania-> Nouakchott
Mauritius-> Port Louis
Mexico-> Mexico City
Micronesia-> Palikir
Moldova-> Chisinau
Monaco-> Monaco
Mongolia-> Ulaanbaatar
Montenegro-> Podgorica
Morocco-> Rabat
Mozambique-> Maputo
Myanmar (Burma)-> Naypyidaw

Namibia-> Windhoek
Nauru-> Yaren District
Nepal-> Kathmandu
Netherlands-> Amsterdam
New Zealand-> Wellington
Nicaragua-> Managua
Niger-> Niamey
Nigeria-> Abuja
North Korea-> Pyongyang
Norway-> Oslo

Oman-> Muscat

Pakistan-> Islamabad
Palau-> Ngerulmud
Palestine-> Ramallah
Panama-> Panama City
Papua New Guinea-> Port Moresby
Paraguay-> Asunción
Peru-> Lima
Philippines-> Manila
Poland-> Warsaw
Portugal-> Lisbon

Qatar-> Doha

Romania-> Bucharest
Russia-> Moscow
Rwanda-> Kigali

Saint Kitts and Nevis-> Basseterre
Saint Lucia-> Castries
Saint Vincent and the Grenadines-> Kingstown
Samoa-> Apia
San Marino-> San Marino
Sao Tome and Principe-> São Tomé
Saudi Arabia-> Riyadh
Senegal-> Dakar
Serbia-> Belgrade
Seychelles-> Victoria
Sierra Leone-> Freetown
Singapore-> Singapore
Slovakia-> Bratislava
Slovenia-> Ljubljana
Solomon Islands-> Honiara
Somalia ->Mogadishu
South Africa-> Pretoria (administrative); Cape Town (legislative); Bloemfontein (judicial)
South Korea-> Seoul
South Sudan-> Juba
Spain-> Madrid
Sri Lanka-> Sri Jayawardenepura Kotte
Sudan-> Khartoum
Suriname-> Paramaribo
Swaziland-> Mbabane
Sweden-> Stockholm
Switzerland-> Bern
Syria-> Damascus

Taiwan-> Taipei
Tajikistan-> Dushanbe
Tanzania-> Dodoma
Thailand-> Bangkok
Timor-Leste-> Dili
Togo-> Lomé
Tonga-> Nukuʻalofa
Trinidad and Tobago-> Port of Spain
Tunisia-> Tunis
Turkey-> Ankara
Turkmenistan-> Ashgabat
Tuvalu-> Funafuti

Uganda-> Kampala
Ukraine-> Kyiv
United Arab Emirates-> Abu Dhabi
United Kingdom-> London
United States of America-> Washington, D.C.
Uruguay-> Montevideo
Uzbekistan-> Tashkent

Vanuatu ->Port Vila
Vatican City (Holy See)-> Vatican City
Venezuela-> Caracas
Vietnam-> Hanoi

Yemen-> Sana'a

Zambia-> Lusaka

Zimbabwe-> Harare

To Reverse a given Number in Java

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TO Reverse a Given Number in Java

Steps to do Program:

we take an Integer to store the given number.
After we have to take a try & catch block. If try block consists a error occuring statement is in this block.
Then that statement must be catched by catch block and print the error occurred because of try & catch block.
According to that While loop it is repeatedly revolving around the loop until the condition is false (or) not true.
In this While loop

5.1 we have taken an variable temp = n % 10; it stores the remainder in temp.

5.2 Next we have to store the temp variable in to another variable because we have to number is we are getting from that temp variable.

5.3 Every repetation of loop execution temp stores the remainder variable then sum = sum * 10 + temp; it tells about the every temp variable is stored in sum.

5.4 The sum variable is multiplied by 10 because every remainder must be multiplied and added the variable to sum.(temp storing the remainder ).

5.5 At the same time we have to reduce the given number by writing the statement n=n/10;

that statement stores the Quotient so it reduces the number by again intialize that "n" in to "n" by itself.

public class ReverseNum {
public static void main(String[] args) {
System.out.println("Enter a Number");
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int m;
m = n;
int sum = 0;
try {
while (n > 0) {
int temp = n % 10;
sum = sum * 10 + temp;
n = n / 10;

}
System.out.println("The number is" + sum);
if(sum==m)
{
System.out.println("The Number is polindrome");
}
else
{
System.out.println("It is not a polindeome");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

Retrieve the data from the Database and Sort the Data Based on Job corresponding to Salary using Collections

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Retrieve the data from the Database and Sort the Data Based on Job corresponding to Salary using Collections

package com.nt.show;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

class Justify {

public static ArrayList<Employ> all = new ArrayList<Employ>();

public static void add(Employ z) {
all.add(z);

}

public static void display() {
Collections.sort(all, new Comparator<Employ>() {

@Override
public int compare(Employ o1, Employ o2) {
return o1.getJob().compareTo(o2.getJob());
}

});

for (Employ emd : all) {
System.out.println(emd);
}

}

public static void mySort(final String s) {

Collections.sort(all, new Comparator<Employ>() {
@Override
public int compare(Employ o1, Employ o2) {

if (o1.getSalary() > o2.getSalary()&&(o1.getJob().trim().equals(s)))
return 1;
else
return -1;

}
});
System.out.println(" also Started");
for (Employ ex : all) {

System.out.println(ex);

}
}

}

public class Hazard {

static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String DB_URL = "jdbc:mysql://localhost:3307/organization";

// Database credentials
static final String USER = "root";
static final String PASS = "root";

public static void main(String[] args) throws SQLException,
ClassNotFoundException, IOException {
Connection conn = null;
Statement stmt = null;

try {
// STEP 2: Register JDBC driver
Class.forName("com.mysql.jdbc.Driver");

// STEP 3: Open a connection
System.out.println("Connecting to database");
conn = DriverManager.getConnection(DB_URL, USER, PASS);

// STEP 4: Execute a query
System.out.println("Creating statement...");
stmt = conn.createStatement();
String sql;
sql = "select id,job,salary from employ;";

ArrayList<Employ> al = new ArrayList<Employ>();
ArrayList<Employ> all = new ArrayList<Employ>();
ResultSet rs = stmt.executeQuery(sql);
Justify zx = new Justify();
Employ z = null;
while (rs.next()) {
z = new Employ();
int empid = (rs.getInt("id"));
String empjob = (rs.getString("Job"));
int salary = rs.getInt("salary");
z.setId(empid);
z.setJob(empjob);
z.setSalary(salary);
al.add(z);

Justify.add(z);

System.out.println(z);

}
System.out.println("Sorting");
long lStartTime = System.currentTimeMillis();
Justify.display();
String y="Tester";
String x="Developer";
Justify.mySort(x);
Justify.mySort(y);

long lEndTime = System.currentTimeMillis();
long difference = lEndTime - lStartTime;

System.out.println("Elapsed milliseconds: " + difference);

}

catch (Exception e) {
e.printStackTrace();
} finally {
stmt.close();
conn.close();
}

}

}

Using the Java Bean we can get the entire user defined set of attributes(datatypes) under single object.

A Java Bean Must have Setter and Getter Methods
It must be implemented by serializable.
It must have a Constructor.

package com.nt.show;

public class Employ {

private int id;

private String job;

private int salary;

Employ(){

}

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getJob() {

return job;

}

public void setJob(String job) {

this.job = job;

}

public int getSalary() {

return salary;

}

public void setSalary(int salary) {

this.salary = salary;

}

@Override

public String toString() {

return "Employ [id=" + id + ", job=" + job + ", salary=" + salary + "]";

}

Using Single HashMap we can Retrieve the Entire Row from Database using any Column value

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Using Single HashMap we can Retrieve the Entire Row from Database using any Column value

Using this program we can get the entire row by giving any attribute value of that row by using only one Single HashMap and JavaBean. In this program we used the JDBC connection to the Database MySQL. we can alter the database table values using Collections.

package morning;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.Scanner;

public class Until {
static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String DB_URL = "jdbc:mysql://localhost:3307/organization";

// Database credentials
static final String USER = "root";
static final String PASS = "root";

public static void main(String[] args) throws SQLException,
ClassNotFoundException, IOException {
Connection conn = null;
Statement stmt = null;

try {
// STEP 2: Register JDBC driver
Class.forName("com.mysql.jdbc.Driver");

// STEP 3: Open a connection
System.out.println("Connecting to database");
conn = DriverManager.getConnection(DB_URL, USER, PASS);
Scanner sc =new Scanner(System.in);

// STEP 4: Execute a query
System.out.println("Creating statement...");
stmt = conn.createStatement();
String sql;
sql = "select id,job,salary from employ;";
ResultSet rs = stmt.executeQuery(sql);

while (rs.next()) {
Employ z = new Employ();
int empid = (rs.getInt("id"));
String empjob = (rs.getString("Job"));
int salary = rs.getInt("salary");
z.setId(empid);
z.setJob(empjob);
z.setSalary(salary);
SearchEmp.add(z);
}
String key;
System.out.println("Enter the name you want to search ");
System.out.println("Enter 1. EmpId 2.Salary 3.Job");
int x=sc.nextInt();
switch(x)
{
case 1:
System.out.println("Enter the EmpId");
key=sc.next();
SearchEmp.display(x,key);
break;

case 2: System.out.println("Enter the Salary ");
key=sc.next();
SearchEmp.display(x,key);
break;

case 3: System.out.println("Enter Job");
key=sc.next();
SearchEmp.display(x,key);
break;
}
}
catch(Exception e)
{
e.printStackTrace();
}

}
}

Using the JavaBean we can get the entire user defined set of attributes(datatypes) under single object.

A JavaBean Must have Setter and Getter Methods
It must be implemented by serializable.
It must have a Constructor.

package morning;

public class Employ {

private int id;

private String job;

private int salary;

Employ(){

}

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getJob() {

return job;

}

public void setJob(String job) {

this.job = job;

}

public int getSalary() {

return salary;

}

public void setSalary(int salary) {

this.salary = salary;

}

@Override

public String toString() {

return "Employ [id=" + id + ", job=" + job + ", salary=" + salary + "]";

}

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