Preface

Italic typeface indicates book titles or emphasis.

Oracle Database Concepts

Ensure that the recovery catalog and target database do not reside on the same disk.

Uppercase monospace typeface indicates elements supplied by the system. Such elements include parameters, privileges, datatypes, RMAN keywords, SQL keywords, SQL*Plus or utility commands, packages and methods, as well as system -supplied column names, database objects and structures, usernames, and roles.

You can back up the database by using the BACKUP command.

Query the TABLE_NAME c olumn in the USER_TABLES data dictionary view.

Use the DBMS_STATS.< code>GENERATE_STATS procedure.

lowercase monospace (fixed-width) font

Lowercase monospace typeface indicates executables, filenames, directory names, and sample user-supplied elements. Such el ements include computer and database names, net service names, and connect identifiers, as well as user-supplied database objects and structures, column names, packages and classes, usernames and roles, program units, and parameter values.

Note: Some programmatic elements use a mixture of UPPERCASE and lowercase. Enter these el ements as shown.

Enter sqlplus to open SQL*Plus.

The password is specified in the orapwd file.

Back up the datafiles and control files in the /disk1/oracle/dbs directory.

Th e department_id, department_name, and location_id columns are in the hr.departments table.

lowercase italic monospace (fixed-width) font

Lowercase italic monospace font represents placeholders or variables.

You can specify the parallel_clause.

Run Uold_release.SQL where old_release refers to the releas e you installed prior to upgrading.

Brac kets enclose one or more optional items. Do not enter the brackets.

DECIMAL (digits [ , precision ])

{ }

Braces enclose two or more items, one of which is required. Do not enter the braces.

{ENABLE | DISABLE}

A vertica l bar represents a choice of two or more options within brackets or braces. Enter one of the options. Do not enter the vertical bar.< /p>

{ENABLE | DISABLE}
[COMPRESS | NOCOMPRESS]

...

Horizontal ellipsis points indicate either:

• That we have omitted parts of the code that are not directly related to the example< /li>
• That you can repeat a portion of the code

CREATE TABLE ... AS subquery;

SELECT col1, col2, ... , coln FROM 
e
mployees;

<
/a> .
 .
 .

Vertical ellipsis points indicate that we have omitted several lines of code not directly related to the example.

SQL> SELECT NAME FROM V$DATAFILE;
NAME
--------
----------------------------
/fsl/dbs/tbs_01.dbf
/fs1/dbs/tbs_02.dbf
.

.
.
/fsl/dbs/tbs_09.dbf
9 rows selected.

Other notation

You must enter symbols other than brackets, braces, vertical bars, a nd ellipsis points as shown.

acctbal NUMBER(11,2);
acct    CONSTANT NUMBER(4) := 3;

Italics

Italicized text indicates placeholders or variables for which you must supply particular values.

UPPERCASE

Uppercase typeface indicates el ements supplied by the system. We show these terms in uppercase in order to distinguish them from terms you define. Unless terms appe ar in brackets, enter them in the order and with the spelling shown. However, because these terms are not case sensitive, you can ent er them in lowercase.

SELECT last_name, employee_id FROM 
employ
ees;
SELECT * FROM USER_TABLES;
DROP TABLE hr.employees;