Oracle 11g New Features For Dba Pdf
This powerful clause helps convert cumbersome schema-based consolidations to more agile and efficient pluggable databases. The source of the clone must remain read-only while the target needs to be on a file system that supports sparseness. The optimizer is aware of In-Memory Column Store, so whenever a query accesses objects that reside in the column store and would benefit from its columnar format, they are sent there directly. Describes how to create, configure, and administer an Oracle database.
Snapshot cloning support is now extended to other third party vendor systems. Supporting documentation treats advanced topics.
An administrator can now create a clone of a pluggable database only with the data model definition. Explore Data Recovery Advisor, do parallel backup of the same file, create and manage virtual catalogs, and undrop tablespaces.
In-Memory Aggregation eliminates the need for summary tables in most cases, thus simplifying maintenance of the star schema and allowing access to real-time data. This is a change from the default behavior in which larger tables are not kept in the buffer cache for full table scans. The improved performance also allows more ad-hoc analytic queries to be run directly on the real-time transaction data without impacting the existing workload. Backup and Recovery Explore Data Recovery Advisor, do parallel backup of the same file, create and manage virtual catalogs, and undrop tablespaces.
Oracle snapshot technology is used internally to further improve the sharing of homes across clusters and to reduce storage space. This feature implements a new cache called big table cache for table scan workload. The dictionary data in the source is copied as is but all user-created table and index data from the source is discarded.
Introduces the data warehousing solutions available in Oracle Database and discusses how to perform common day-to-day tasks necessary to implement and administer a data warehouse. Leave a Reply Cancel reply Your email address will not be published. Access your cloud dashboard, manage orders, and more.
Add columns with a default value easily and explore invisible indexes, virtual columns, and read only tables. The need to count distinct values is a common operation in today's data analysis. Oracle Database Development Guide for details.
Oracle 11 G New Features for DBA
Please do let me know if any other information needs to be added in this. Developer Essentials Build applications around Oracle databases using the languages and platforms of your choice. Oracle generates unique names for the files. The in-memory columnar format does not replace the on-disk or buffer cache format, but is an additional, transaction-consistent copy of the object.
For more info please access vi's website. Use bind variables that pick the right plan every time and ensure a new execution plan is perfect before it's used. This feature enhances granular control and effectively reduces downtime of an application in planned or unplanned outages. Full database caching can be used to cache the entire database in memory.
This feature enables an innovative way to aggregate user-created data in a multitenant container database. In addition to describing how to manage security in a default Oracle database, this guide includes beginning level tutorials for Oracle Label Security and Oracle Database Vault. The columnar format enables scans, joins and aggregates to perform much faster than the traditional on-disk formats for analytical style queries. In-Memory Column Store enables objects tables or partitions to be stored in memory in a columnar format. In my opinion, this Real Application Testing functionality alone justifies the upgrade.
Oracle Clusterware Administration and Deployment Guide for details. Change, although constantly present, is seldom risk-free. Oracle Database Security Guide for details. The performance comparisons are done by a new administrative task during a user-specified maintenance window. In Oracle previous version there is no facility to alter the table with adding the default values in it.
This feature further improves rapid provisioning of pluggable databases. In-Memory Column Store allows seamless integration of in-memory objects into an existing environment without having to change any application code. The directory must have appropriate permissions that allow Oracle to create files in it. Query the physical standby database in real time without shutting down recovery, just for starters.
Explains how to perform day-to-day database performance tuning tasks using features provided by Oracle Diagnostics Pack, Oracle Tuning Pack, and Oracle Enterprise Manager. So developer efforts of updating the column values has been reduced. At any point of time the table mode has been changed from Read mode to write mode. Data Guard Query the physical standby database in real time without shutting down recovery, just for starters.
Oracle Database Data Warehousing Guide for details. The new release of Oracle Multitenant fully supports remote full and snapshot clones over a database link. Enjoy the series, and the release! Supporting Documentation Supporting documentation treats advanced topics. This feature helps administrators to plug or to unplug databases from one container to another in a shared storage environment.
Oracle Database Administrator's Guide for details. Provides a single source reference for administering Oracle Database in a small to midsize environment, using the graphical user interface of Oracle Enterprise Manager Database Control. Describes Oracle Database licensing. Security Learn about Tablespace Encryption, case-sensitive passwords, data masking, and other features. Manageability Explore automatic memory management, multicolumn statistics, online patching, z distribution pdf and more features.
ORACLE-BASE - Oracle 11g Articles
Describes Oracle Database architecture and essential topics for database administrators and developers. More specifically, this feature improves the performance of full table scans by forcing all tables to be cached. Greater improvements are seen in queries that include more dimensions and aggregate more rows from the fact table. Provides an introduction to securing an Oracle database. Rapid Home Provisioning allows deploying of Oracle homes based on gold images stored in a catalog of pre-created homes.
It should be used when the buffer cache size of the database instance is greater than the whole database size. Storing data that logically belongs together in close physical proximity can greatly reduce the amount of data to be processed and can lead to better compression ratios. Guides you through the process of planning and performing upgrades for Oracle Database. This feature eases the requirement of specific file systems for snapshot clones of pluggable databases. It's not a supported solution, but it works.
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