Parallel Processing in Oracle Database 11g - Seminar DB-11g-PARP

kurz

Základní info

Audience:

  • Application Developers
  • Data Warehouse Administrator
  • Database Administrators
  • Developer

Prerequisites:

  • Knowledge of database administration

Objectives:

  • Use Database Resource Manager to complement the control of parallel processing usage
  • Define why and when to use parallel processing
  • List the SQL statements and data loading utilities that can benefit from parallel processing
  • Explain the basic concepts and theory associated with parallel execution
  • Use a variety of parallel execution features with different SQL statements
  • Read and evaluate execution plans for parallelized statements
  • Use new Oracle 11g, Release 2 parallel processing features including Auto DOP, statement-queuing, and in-memory parallel execution
  • Examine specific configurations such as RAC database to and Database Machine with parallel execution
  • Troubleshoot parallel processing issues such as no parallel execution, unexpected DOP, or performance decrease
  • Trace parallel execution to provide information to Oracle customer support

Topics:

Parallel execution concepts

  • Benefits of parallel processing
  • When to use parallel processing?
  • Query Coordinator and parallel execution (PX) servers
  • Parallel execution communication
  • The producer / consumer model
  • Execution plan basics

Using Manual DOP

  • Statements that can be parallelized
  • SELECT with single parallel table scan and the explain plan
  • SELECT with parallel hash join and the explain plan
  • Parallelized SELECT with partition wise join and the advantages
  • Parallelized DML operations

Using Auto DOP

  • Auto DOP versus manual DOP
  • Auto DOP parameters
  • Auto DOP behavior
  • Impact of Auto DOP on other parameters
  • SELECT explain plan with Auto DOP
  • Auto DOP in RAC environment

Using Statement Queuing

  • Comparing statement queuing to minimal DOP guarantee
  • Setting parameters
  • When to choose statement queuing
  • Using Database Resource Manager with statement queuing
  • Viewing queued statements

In-Memory Parallel Execution

  • The goal of In-Memory Parallel Execution
  • How SELECT works with and without in-memory parallel execution
  • Set parameters to use In-Memory parallel execution
  • In-memory PX examples

Parallel Execution and Data Loading

  • DataPump export / import
  • SQL*Loader
  • External tables: applying parallel execution as best practice

Troubleshoot situations when parallel processing does not proceed as desired

  • When parallel processing does not proceed as desired
  • When no parallel processing occurs
  • When Auto DOP computes unexpected DOP
  • When Statement Queuing starts unexpectedly
  • When performance decreases due to parallel execution
  • Tracing parallel execution

Managing a Mixed Workload with DBRM

  • Take advantage of DBRM to manage concurrent parallel executions with mixed workloads
  • Use plan directives to manage concurrent parallel executions
  • How to reject queries
  • Using dynamic switching
  • Understanding how directives interact

Parallel Processing in Oracle Database 11g - Seminar DB-11g-PARP

Vybraný termín:

 Praha

Cena

Kontaktovat dodavatele


Kontrola proti spamu. Kolik je osm a devět ? Součet zapište číslicemi.