SQL*Plus - Oracle Command Line Interface
This section describes how to use Oracle command line interface, SQL*Plus.
Oracle 11g XE server not only offers a Web interface, but it also offers a command line interface called SQL*Plus.
The program file of SQL*Plus is located at
Here is what I did in a command window with "sqlplus", to obtain a list of all users and
checking privileges of user "Herong":
SQL*Plus: Release 220.127.116.11.0 Production on Tue Aug 11 16:39:24 2015
Copyright (c) 1982, 2010, Oracle. All rights reserved.
SQL> connect SYS/HerongY@ng AS SYSDBA
ORA-12154: TNS:could not resolve the connect identifier specified
SQL> connect SYS/anything AS SYSDBA
SQL> SELECT * FROM ALL_USERS;
USERNAME USER_ID CREATED
------------------------------ ---------- ---------
XS$NULL 2147483638 27-AUG-11
APEX_040000 47 27-AUG-11
APEX_PUBLIC_USER 45 27-AUG-11
FLOWS_FILES 44 27-AUG-11
HR 43 27-AUG-11
MDSYS 42 27-AUG-11
ANONYMOUS 35 27-AUG-11
XDB 34 27-AUG-11
CTXSYS 32 27-AUG-11
OUTLN 9 27-AUG-11
SYSTEM 5 27-AUG-11
SYS 0 27-AUG-11
12 rows selected.
This tutorial shows a number of interesting behaviors of Oracle 11.2:
- Use the "/nolog" option with the "sqlplus" command so it will be started without login,
which give you a chance to run the "CONNECT" or other commands.
- "SYS" is a very special built-in user account in Oracle server.
It has the password set to the value provided during the installation process.
- When correct user name and password "SYS/HerongY@ng" is provided,
Oracle 11.2 server returns with the "ORA-12154: TNS" error,
which could be related to some settings I missed during the installation.
- However, when incorrect user name and password "SYS/anything" is provided,
Oracle 11.2 server provides me the connect. This is very funny.
After some searching on the Internet, I think Oracle has a logic to default
incorrect user name and password combination to use Windows user group
authentication to establish the connection if "AS SYSDBA" is specified.
- Application Express users are not included in the "ALL_USERS" table in Oracle 11.2.
But in Oracle 10.2, the user added in Application Express is listed in the "ALL_USERS" table.
Last update: 2015.
Table of Contents
About This Book
JDBC (Java Database Connectivity) Introduction
JDK (Java SE) Installation
Installing and Running Java DB - Derby
Derby (Java DB) JDBC Driver
Derby (Java DB) JDBC DataSource Objects
Java DB (Derby) - DML Statements
Java DB (Derby) - ResultSet Objects of Queries
Java DB (Derby) - PreparedStatement
MySQL Installation on Windows
MySQL JDBC Driver (MySQL Connector/J)
MySQL - PreparedStatement
MySQL - Reference Implementation of JdbcRowSet
MySQL - JBDC CallableStatement
MySQL CLOB (Character Large Object) - TEXT
MySQL BLOB (Binary Large Object) - BLOB
►Oracle Express Edition Installation on Windows
Oracle Database 11g Express Edition (XE) Installation
Accessing Oracle Server through Web Interface
Creating Oracle Database Users
►SQL*Plus - Oracle Command Line Interface
SQL*Plus - Create New User and Login
Oracle JDBC Drivers
Oracle - Reference Implementation of JdbcRowSet
Oracle - PreparedStatement
Oracle - JBDC CallableStatement
Oracle CLOB (Character Large Object) - TEXT
Oracle BLOB (Binary Large Object) - BLOB
Microsoft SQL Server 2005 Express Edition
Microsoft JDBC Driver for SQL Server - sqljdbc42.jar
Microsoft JDBC Driver - Query Statements and Result Sets
Microsoft JDBC Driver - DatabaseMetaData Object
Microsoft JDBC Driver - DDL Statements
Microsoft JDBC Driver - DML Statements
SQL Server - PreparedStatement
SQL Server CLOB (Character Large Object) - TEXT
SQL Server BLOB (Binary Large Object) - BLOB
JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver
JDBC-ODBC Bridge Driver - Flat Text Files
JDBC-ODBC Bridge Driver - MS Access
JDBC-ODBC Bridge Driver - MS SQL Server
Summary of JDBC Drivers and Database Servers
Additional Tutorial Notes to Be Added
PDF Printing Version