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Oracle GoldenGate 12c: Troubleshooting and Tuning

Kursun kodu
OG12TT
Müddət
4 Gün, 32 Saat
Kursun təsviri
Məqsədlər
Tələblər
Kursun proqramı
Kursun təsviri

Course overview

This Oracle GoldenGate 12c Troubleshooting and Tuning training teaches you how to gather and examine evidence; you’ll also learn to solve case problems, diagnose their cause and find methods of resolution. Each of these practices challenges you to diagnose and troubleshoot the issue using GoldenGate software.

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Course Objectives

  • Monitor and tune performance
  • Gather evidence to help troubleshoot problems
  • Use troubleshooting tools
  • Familiarize with the latest tools to troubleshoot Integrated Extract/Replicat
  • Describe solutions for the most common problems
Tələblər

Suggested Prerequisite

  • Familiarity with the Oracle Database

Required Prerequisite

  • Oracle GoldenGate 12c: Fundamentals for Oracle

Audience

  • Database Administrators
  • System Administrator
  • System Integrator
  • Implementation Consultant
  • Systems Architects
  • Data Warehouse Administrator
Kursun proqramı

Course Topics

1. Gathering Evidence

  • GGSCI
  • Competently using the tools mentioned above to gather evidence about alleged issues occurring to an Oracle GoldenGate environment
  • Error Logs, Process Reports, Discard File, System Logs
  • Acquiring confidence using the standard Oracle GoldenGate tools normally used to interact with the software:

2. Oracle GoldenGate Troubleshooting Tools

  • Consulting the Documentation
  • Accessing knowledge Documents – Mailing lists, Oracle GoldenGate forums, etc.
  • Getting familiar with the logdump utility
  • Getting familiar with the ShowSyntax parameter

3. Basic and Startup Problems

  • Verifying that the the parameter file exists, has the same name as the Extract/Replicat group, and is accessible by Oracle GoldenGate
  • Introducing the use of CHECKPARAMS to verify that the parameter syntax is correct
  • Verifying file names, file permissions, consistency between Extract and Replicat group names and their supporting files
  • Getting familiar with basic problems
  • Developing the ability to deal with Extract and Replicat startup issues
  • Verifying that the correct software version has been installed
  • Verifying that the Oracle GoldenGate manager is running, that the group name which fails to start exists and is not misspelt
  • Verifying consistent naming convention when defining trail files and their reference in the Extract/Replicat parameter files

4. Data Extraction Problems

  • Analyzing various causes of a slow Extract startup
  • Introducing the use of the CacheMgr parameter to control the virtual memory and temporary disk space that are available for caching uncommitted transaction data
  • Was the primary Extract or the data pump stopped, re-added, or restarted without resetting the data pump’s read position in the local trail?
  • In-depth analysis of abending data pumps: Does the data pump abend with error number 509 (Incompatible record)?Have the source tables been changed? Is the Extract abending due to data manipulation?
  • In-depth analysis of abending Extracts: is Extract unable to open the transaction logs? – Checking to see if the disk is full -Is an archive log missing?
  • Tracing may be enabled, activity logging may be enabled, many columns listed in tables being replicated
  • Developing the ability to deal with and troubleshoot data extraction issues:Extract is slow – Extract abends – Data pump abends

5. Data Replication Problems

  • Verifying that the Replicat is reading the trail to which Extract is writing
  • Analyzing the reasons why a Replicat abends: Is Replicat unable to locate a trail? Is Replicat unable to open a trail file? Was Add TranData issued for each table?
  • Analyzing the various causes of a stuck Replicat: Does Stats Replicat return no statistics? Do successive Info Replicat commands indicate that the Replicat read checkpoint is not moving?
  • Developing the ability to deal with and troubleshoot data replication issues:

6. Missed Transactions

  • ‘Single quotes’ on object names imply case-sensitive names for some databases (including the Oracle database)
  • Are the transactions coming out of the source system properly?
  • Analyzing the reasons why transactions are not being processed: Were the tables included in Table and Map statements? Are fully qualified names (owner.table) used for both Table and Map?
  • Developing the ability to deal with and troubleshoot missed transactions involving issues such as: Tables that are not properly specified – Missing Add TranData command – LOB data not replicating

7. Mapping and Synchronization Problems

  • Is KeyCols being used? Are both source and target KeyCols being used? Corresponding source and target columns must match.
  • Are WHERE clauses comparing different data types?
  • Do table and column names contain only supported characters?
  • Analyzing the causes of various mapping problems:Is Extract returning fetch-related errors? Was the row containing the data deleted?
  • Has the undo retention expired?
  • Is NoUseLatestVersion for FetchOptions being used?
  • Developing the ability to deal with and troubleshoot mapping problems, such us: Fetching from the source data fails – Table and column names not matching between the source and the target
  • Do the source and target tables exist in the databases? Are they specified correctly in the Table or Map statement? Are their names fully qualified (schema.table)?

8. SQLEXEC, File-Maintenance, and Other Problems

  • SQLEXEC problems – File-maintenance problems – Time differences – Too many open cursors
  • Developing the ability to deal with and troubleshoot :
  • File-Maintenance Problems: Discard File Is Not Created – Discard File Is Too Big – Trail File Is Too Big
  • Miscellaneous Problems: Time Differences – INFO Command Shows Incorrect Status

9. Classic Performance Tuning

  • Monitoring lag and statistics
  • Tuning Manager
  • Identifying network and disk bottlenecks
  • Tuning Classic Extract
  • Tuning Classic Replicat
  • Identifying causes of slow startups

10. Integrated Performance Tuning

  • Familiarizing with the new V$ tables holding real time Oracle GoldenGate statistics
  • Describing architecture and advantages of the new Integrated capture
  • Describing architecture and advantages of the new Integrated delivery

11. Integrated Capture and Delivery Troubleshooting

  • Familiarizing with Troubleshooting Aids and Tools for Integrated Replication
  • Describing the Oracle Database 12c GoldenGate AWR report
  • Describing Oracle GoldenGate Healthcheck for Integrated Replicat
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Oracle GoldenGate 12c: Troubleshooting and Tuning
Kursun kodu:
OG12TT
Müddət:
4 Gün, 32 Saat
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