Tài liệu OCA: Oracle Database 11g Administrator Certified Associate- P6 pptx

... Split-Merge on www.verypdf.com to remove this watermark.Chapter 4Using Joins and Subqueries ORACLE DATABASE 11g: SQL FUNDAMENTALS I EXAM OBJECTIVES COVERED IN THIS CHAPTERDisplaying data from multiple ... execute a join of three or more tables, Oracle takes these steps:1. Oracle joins two of the tables based on the join conditions, comparing their columns.2. Oracle joins the result to another table, ... can nest any number of such queries; Oracle does not have a limit. Using the inline view, you can write queries to find top-n values. This is possible because Oracle allows an ORDER BY clause...

... Introducing Oracle Database 11g Components and Architecture GROUP# MEMBER 1 /u01/app /oracle/ oradata/11GR11/redo01.log 1 /u02/app /oracle/ oradata/11GR11/redo01.log 2 /u02/app /oracle/ oradata/11GR11/redo02.log ... Introducing Oracle Database 11g Components and ArchitectureInstalling Oracle 11g One of your duties as an Oracle DBA is to install and configure the Oracle 11g software on the server so that a database ... Oracle Database 11g Components and ArchitectureThe Oracle InstanceAn Oracle database instance consists of Oracle s main memory structure, called the system global area (SGA), and several Oracle...

... Creating an Oracle 11g Database SummaryIn this chapter, you started off by learning how to create an Oracle 11g database using the Database Configuration Assistant. Then I discussed the Oracle metadata ... Diag​Enabled​​​​​​​​​​​​​​TRUEADR​Base​​​​​​​​​​​​​​​​​​/u01/app /oracle ADR​Home​​​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11GDiag​Trace​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/traceDiag​Alert​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/alertDiag​Incident​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/incidentDiag​Cdump​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/cdumpHealth​Monitor​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/hmDefault​Trace​File​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/trace/OCA​​​​​​​​​​​​​​​​​​​​​​​​​ 11G_ ora_9018.trcActive​Problem​Count​​​​​​0Active​Incident​Count​​​​​0The ... Diag​Enabled​​​​​​​​​​​​​​TRUEADR​Base​​​​​​​​​​​​​​​​​​/u01/app /oracle ADR​Home​​​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11GDiag​Trace​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/traceDiag​Alert​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/alertDiag​Incident​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/incidentDiag​Cdump​​​​​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/cdumpHealth​Monitor​​​​​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/hmDefault​Trace​File​​​​​​​​/u01/app /oracle/ diag/rdbms/oca11g/OCA11G/trace/OCA​​​​​​​​​​​​​​​​​​​​​​​​​ 11G_ ora_9018.trcActive​Problem​Count​​​​​​0Active​Incident​Count​​​​​0The...

... experienced Oracle database administrator has seen this maturation process in the Oracle network architecture as well. From the first version of SQL*Net to the latest releases of Oracle Net, Oracle ... Architecture ORACLE DATABASE 11g: ADMINISTRATION I EXAM OBJECTIVES COVERED IN THIS CHAPTER:Configuring the Oracle Network EnvironmentConfigure and Manage the Oracle Network Using the Oracle ... OCIDriver Oracle NetRDBMS Oracle NetTCP/IPNetworkIn this example, the Java application installed on the client uses the JDBC OCI driver and Oracle Database server. When an application makes a database...

... connection from the Oracle Connection Manager server to the database server.You can find out more about Oracle Connection Manager in Oracle Data-base Net Services Administrators Guide 11g Release ... define the service name. For Oracle 11g, the service name does not have to be the same as the ORACLE_ SID because a database can have multiple service names. In Oracle 11g, the service name is ... are features of Oracle Connection Manager. Oracle Connection Manager is a facility provided by Oracle that controls access to database services and multiplex connections in an Oracle environment....

... activity. By default, DBCA enables several key audit-ing features when you create an Oracle 11g database. The Oracle 11g database has several powerful features (user accounts and packages) that will ... Where can the database write audit_trail records?A. In a database tableB. In a file outside the database C. Both in the database and in an operating-system fileD. Either in the database or in ... secure your database. Make sure you know how to lock down your database. Know which packages should be secured and how to secure them.Know how to implement password security. An Oracle 11g database...

... you to internationalize your Oracle database system. NLS internationalizations include date representations, char-acter sets, alphabets, and alphabetical ordering. Oracle will implicitly or automatically ... to a numeric or datetime value. Character datatypes in Oracle 11g are CHAR, VARCHAR2, NCHAR, NVARCHAR2, and CLOB. Numeric datatypes in Oracle 95127c02.indd 101 2/18/09 6:46:42 AMPlease purchase ... instance recovery is needed. Please see Chapter 8, “Introducing Oracle 11g Components and Architecture,” for more information. Oracle provides the ORA_ROWSCN pseudocolumn to identify the SCN...

... Split-Merge on www.verypdf.com to remove this watermark.Chapter 3Using Group Functions ORACLE DATABASE 11g: SQL FUNDAMENTALS I EXAM OBJECTIVES COVERED IN THIS CHAPTER:Reporting Aggregated ... use to calculate space usage in a database. The DBA_SEGMENTS dictionary view shows the segments allocated in the database each table or index created in the database must have at least one ... option is useful only if you are running the Oracle Parallel Server and have multiple instances.LANGUAGEÛN returns the language, territory, and database character set. The delimiters are an...

... This support is germane only to multiuser databases, where one database session can change (and commit) data that is being read by another session. Oracle always uses statement-level consistency, ... TRUNCATE statement, as described in the next section. TRUNCATE is not included in the Oracle Database 11g SQL Fundamentals I exam, but I’ve included it here for completeness.Truncating a TableTruncating ... MechanismLocks are implemented by Oracle Database to prevent destructive interaction between concurrent transactions. Locks are acquired automatically by Oracle when a DML state-ment is executed;...

... altered.In Oracle 11g, when you add a column with the NOT NULL constraint and the DEFAULT value, Oracle 11g does not update all the existing rows in the table with the default value. Oracle 11g ... tables and constraints on tables. Database Objects OverviewData in the Oracle Database is stored in tables. A table is the main database object. Many other database objects, whether or not they ... releases prior to Oracle 11g. In Oracle 11g, you can use the READ ONLY clause of the ALTER TABLE statement to make a table read-only.Deferring Constraint ChecksBy default, Oracle checks whether...