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Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Database VLDB and Partitioning Guide - Contents

ContentsRelated Documents Conventions Changes in This Release for Oracle Database VLDB and Partitioning Guide … Partitioning VLDB and Partitioning Partitioning As the Foundation for Information Lifecycle Management

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

VLDB and Partitioning

VLDB and PartitioningA very large database has no minimum absolute size. Although a VLDB is a database like smaller … databases, there are specific challenges in managing a VLDB. These challenges are related to the sheer … challenges surrounding backup and recovery for a VLDB. Storage is a key component of a very large … database. Storage Management

Database Readme, 12c Release 1 (12.1)

Documentation Addendum

4.14 Oracle Database VLDB and Partitioning GuideNote the following changes in Oracle Database VLDB and Partitioning Guide part number E41057: It

Database SQL Language Reference, 12c Release 1 (12.1)

Comments

NO_PQ_CONCURRENT_UNION Hintprocessing of UNION and UNION ALL operations. See Also: \"PQ_CONCURRENT_UNION Hint\" Oracle Database VLDB

Database SQL Language Reference, 12c Release 1 (12.1)

Comments

PQ_CONCURRENT_UNION HintUNION and UNION ALL operations. See Also: \"NO_PQ_CONCURRENT_UNION Hint\" Oracle Database VLDB and Partitioning Guide for information about using this hint

Database SQL Language Reference, 12c Release 1 (12.1)

Comments

ENABLE_PARALLEL_DML HintALTER SESSION ENABLE PARALLEL DML statement. See Also: Oracle Database VLDB and Partitioning Guide

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Changes in This Release for Oracle Database VLDB and Partitioning Guide

Changes in This Release for Oracle Database VLDB and Partitioning GuideThis chapter describes changes to Oracle Database VLDB and Partitioning Guide. Changes for Very

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Indexes

21.2.9 Consider Parallelizing Index Creationcreation. See Also: Oracle Database VLDB and Partitioning Guide for information about using parallel execution

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Resources with Oracle Database Resource Manager

Use the PARALLEL_SERVER_LIMIT directive attribute to specify the maximum percentage of the parallel…degree of parallelism for a consumer group. See Also: Oracle Database VLDB and Partitioning Guide for

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Oracle Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Oracle® DatabaseVLDB and Partitioning Guide 12 c Release 1 (12.1) E41057-12 July 2016 Oracle Database VLDB and

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Changes in This Release for Oracle Database VLDB and Partitioning Guide

Changes for Very Large Databases and Partitioning in Oracle Database 12c Release 1 (12.1.0.2)The following are changes in Very Large Databases and Partitioning for Oracle Database 12 c Release 1 (12.1.0.2). New Features

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Changes in This Release for Oracle Database VLDB and Partitioning Guide

Changes for Very Large Databases and Partitioning in Oracle Database 12c Release 1 (12.1.0.1)Automatic Big Table Caching Automatic big table caching enhances in-memory query capabilities of Oracle Database in both single instance and Oracle Real Application Clusters (Oracle RAC) environments using a temperature based algorithm with the big table cache. In Oracle RAC environments, this feature is supported only with parallel queries. In single instance environments, this feature is supported

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Tables

20.2.2 Specify the Type of Table to Createadministration. Partitioned tables are discussed in Oracle Database VLDB and Partitioning Guide.

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Tables

20.6.1 Reasons for Using the ALTER TABLE Statementsubpartitions at a time, such as split partition and merge partitions operations. See Oracle Database VLDB

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Parameters Affecting Resource Consumption for Parallel DML and Parallel DDL

FAST_START_PARALLEL_ROLLBACKIf a system fails when there are uncommitted parallel DML or DDL transactions, you can speed up transaction recovery during startup by using the FAST_START_PARALLEL_ROLLBACK parameter. This parameter controls the DOP used when recovering terminated transactions. Terminated transactions are transactions that are active before a system failure. By default, the DOP is chosen to be at most two times the

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Rules for CREATE TABLE AS SELECT

Degree of Parallelism (CREATE Part)The DOP for the CREATE operation, and for the SELECT operation if it is parallelized, is specified by the PARALLEL clause of the CREATE statement, unless it is overridden by an ALTER SESSION FORCE PARALLEL DDL statement. If the PARALLEL clause does not specify the DOP, the default is the number of CPUs.

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Creating Composite List-Range Partitioned Tables

Creating Composite List-Range Partitioned TablesExample 4-14 shows an accounts table that is list partitioned by region and subpartitioned using range by account balance, and row movement is enabled. Subpartitions for different list partitions could have different ranges specified. To learn how using a subpartition template can simplify the specification of a composite partitioned table, see \" Specifying Subpartition Templates to Describe Composite

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Creating Reference-Partitioned Tables

Creating Reference-Partitioned TablesTo create a reference-partitioned table, you specify a PARTITION BY REFERENCE clause in the CREATE TABLE statement. This clause specifies the name of a referential constraint and this constraint becomes the partitioning referential constraint that is used as the basis for reference partitioning in the table. The referential constraint must be enabled and enforced. As with other partitioned tables,

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Single-Level Partitioning

Single-Level PartitioningA table is defined by specifying one of the following data distribution methodologies, using one or more columns as the partitioning key: Range Partitioning Hash Partitioning List Partitioning For example, consider a table with a column of type NUMBER as the partitioning key and two partitions less_than_five_hundred and less_than_one_thousand. The less_than_one_thousand partition contains rows where

Database VLDB and Partitioning Guide, 12c Release 1 (12.1)

Creating a Composite Range-List Partitioned Table

Creating a Composite Range-List Partitioned TableExample 4-10 illustrates how range-list partitioning might be used. The example tracks sales data of products by quarters and within each quarter, groups it by specified states. A row is mapped to a partition by checking whether the value of the partitioning column for a row falls within a specific partition range. The row is then mapped to a subpartition within that partition by identifying the subpartition