oracle goldengate 101 - a newbie's dive into the unknown

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T : +44 (0) 8446 697 995 or (888) 631 1410 (USA) E : [email protected] W: www.rittmanmead.com

Borkur Steingrimsson, Rittman Mead ConsultingUKOUG, Birmingham, December 2011

Oracle GoldenGate 101:A newbie's dive in to the unknown

Saturday, 10 December 11



T : +44 (0) 8446 697 995 E : [email protected] W: www.rittmanmead.com

Introduction

• Börkur Steingrimsson

• Principal Consultant at

Rittman Mead Consulting

• Based in Brussels, Belgium

• Blog‣ http://www.rittmanmead.com/blog/

• 15 years of dabbling in Oracle technology

‣ Discoverer

‣ DW

‣ OWB / ODI‣ OBIEE

‣ OGG


http://www.rittmanmead.com/blog/



http://www.rittmanmead.com/


mailto:[email protected]





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Agenda

• Introduction to GoldenGate

• Technical Things

‣ Installation

‣ Platforms / Services

‣ “Development”‣ Deployment

• Demo

‣ Interface; command line & GUI

‣ DML & DDL

‣ Log files• GoldenGate and ODI









Oracle GoldenGate

• So you’ve heard about Oracle GoldenGate?

•What’s all the Fuss about?









Introduction to Oracle GoldenGate

• Acquired in 2009 from GoldenGate

• “Best-of-Breed” & “Easy-to-Deploy” product

‣ Change Data Capture engine (CDC)

‣ Replicate and integrate transactional data

‣ Sub-second speed‣ Multiple enterprise system support

• Carry data between (heterogenous) systems

‣ Oracle databases

‣ DB/2

‣ MSSQL‣ ... and so on

• Support for different hardware platforms









Oracle GoldenGate

• Supported Oracle Versions

‣ 9i Release 2

‣ 11g Release 2

• CDC

‣ Real-Time‣ Log-based

‣ Large data volume

‣ Low-impact and footprint

• DML and DDL replication

•

“ETL” - “ E-LT”‣ Filter

‣ Mapping

‣ Transformations









What’s in the Box?

• Oracle GoldenGate

• Management Pack

• Oracle GoldenGate Veridata

• Oracle GoldenGate Application Adapters

• Oracle GoldenGate for Mainframes• A full Oracle Active Data Guard license

‣ Stand-by databases

• A full Oracle XStreams - Oracle Streams API - License

• Oracle GoldenGate Statement of Directions tells us that

‣ “Given the strategic nature of Oracle GoldenGate, Oracle Streams willcontinue to be supported, but will not be actively enhanced. Rather, the bestelements of Oracle Streams will be evaluated for inclusion with OracleGoldenGate.”









Technical Things

• Local installation of Oracle GoldenGate on each participating box

‣ Oracle GoldenGate

‣ Protocols: TCP/IP

‣ Managers default listen on port 7809

• Movement on data can be encrypted• MS Windows can run the Manager as a service

‣ Create scripts to start up on Unix

• Increasing number of platforms supported

‣ iOS5 support for iPad is probably in the making ;)

•

EXTRACT and REPLICAT groups are created and configured to move dataaround









From the Doco: Architecture









Availability

• Zero-downtime operations

‣ Enable uninterrupted business operations during system upgrade, migration,and maintenance activities.

• Disaster recovery and data protection

‣ Immediate failover with up-to-the-minute data to minimize recovery time‣ Deploy with Oracle Database across database versions or operating systems

‣ Non-Oracle environments.

• Data distribution

‣ Synchronize data for distributed applications in real time across geographiesfor reliable access to timely data.

• Query offloading

‣ Ensure high performance for production systems while still supportingnecessary read-only activities by replicating data between heterogeneoussources and targets.










Real-Time Data Integration

• Real-time data warehousing

‣ Provide continuous, real-time capture and delivery of the most-recent changed databetween OLTP systems and the data warehouse. Oracle GoldenGate integrates easilywith Oracle Data Integrator Enterprise Edition 11g and other extract, transform, and load(ETL) solutions. Oracle GoldenGate 11g is certified to capture from and deliver to Oracle

Exadata Storage Server to enable real-time data warehousing or data consolidationsolutions.

• Operational reporting

‣ Offload reporting activity from production databases to lower- cost secondary systemswith current data for real-time reporting. Oracle GoldenGate 11g is certified to supportmajor Oracle applications, including Oracle E-Business Suite, JD Edwards, PeopleSoftand Siebel CRM, for operational reporting solutions.

• Operational data integration

‣ Integrate operational data between OLTP systems in real time. Enable service-orientedarchitectures, including Oracle SOA Suite, to operate with real-time data by publishingchanged data via Java Message Service (JMS) using Oracle GoldenGate Application

Adapters.











White Paper Points

• Real-time data

‣ Immediately captures, routes, transforms, and delivers transactional data toother systems with sub-second latency. Impr oves organizational decision-making through enterprise-wide visibility into accurate, up-to-date information.

•

Heterogeneous support‣ Supports heterogeneous databases and platforms to increase IT flexibility.

Extracts data from existing IT investments and lowers your total cost of ownership while unifying data from all enterprise systems.

• Reliability

‣ Delivers all committed records to the target, even in the event of network

outages. Moves data without requiring system interruption or outage windows.• High performance with low impact

‣ Moves thousands of transactions per second with negligible impact on sourceand target systems. Enables access to critical information in real time withoutbogging down production systems.











White Paper Points

• Transaction integrity

‣ Maintains transaction commit boundaries and atomicity, consistency, isolation,and durability (ACID) properties as transactions are moved between sourceand target systems. Ensures data consistency and referential integrity acrossmultiple masters, back-up systems, and reporting databases.

• Integration

‣ Integrates with Oracle Data Integrator Enterprise Edition and complementsother ETL solutions. Via Oracle GoldenGate Application Adapters, it allows tocapture from, or deliver to, Java Message Service–based messaging solutionssuch as Oracle WebLogic.

• Flexible topology support‣ Moves data in one-source-to-one-target, one-to-many, many-to-one, many-to-

many, cascading, and bidirectional configurations.











From the Doco: Supported Topologies









White Paper Points

• Conflict detection and resolution

‣ Enables conflict detection and resolution in multi-master configurations wheretwo systems can modify separate instances of the same table.

• Event based infrastructure

‣ Triggers immediate actions based on specific database operations capturedand stored in Trail Files

• Routing and compression

‣ Utilizes TCP/IP to send data and eliminate geographical distance constraints.

‣ Applies additional compression to the data as it is routed.

• Data encryption

‣ Securely transmits data for domestic and international applications withvariable key length encryption.





White Paper Points

• Deferred apply

‣ Applies data immediately or at a deferred time chosen by the user, withoutlosing transaction integrity.

• Automated memory management

‣ Automatically adjusts transaction memory based on the size and number of transactions being capturing.

• Bounded Recovery

‣ Persists uncommitted operations to disk to enable fast and simple datarecovery for long running transactions in the event that the replication processis paused or interrupted.










Having Said That ...

There is no magic!









Having Said That ...

There is no magic!But it is quite “DBA centric”

- so perhaps there is some magic?









What’s New in 11g?

• Certification for operational reporting solutions on Oracle Applications such asOracle E-Business Suite, Oracle PeopleSoft, and Oracle JD Edwards.

• Support for more data types and direct loads for Oracle Database, andcertification on Oracle Exadata.

•

Expanded heterogenous support via:‣ Log-based capture from, and delivery to IBM DB2 v9.7,

‣ Native delivery to Oracle TimesTen databases.

‣ Capture from JMS-based messaging systems

‣ MySQL v5

• For the Oracle Database, simplified recovery to significantly reduce recovery

windows for long running transactions in case of process interruptions.

• Increased transaction tracing flexibility to easily identify bottlenecks and tune thedata integration solution for optimum performance

• Tighter integration with ODI11g (well, from ODI’s side)











Building Blocks

• Extract groups

• Replication groups

• Trails

• Maps

• Files• parameter files

• scripts and the OBEY command









Installation

• Each node will have the Oracle GoldenGate software installed

‣ Download the platform-specific zip files from EDelivery.oracle.com

- Operating system

- 32bit or 64 bit

- 10.4 or the new 11g release- Database vendor & version

‣ Unzip the downloaded file in to a new directory

• Create default directories to store our metadata

• Configure the Manager on each node

‣ Which port (default is 7809)

‣ Service name

‣ Windows: Configure to run as Service & Install Event Messages

• “Bob’s your uncle”









Configuration

• The GGSCI utility (GoldenGate Command Interpreter) is our first entry point tothe installation

‣ Command-Line interface

‣ Configure the Manager process

‣

Manage extractions and replications‣ Edit parameters

- Global

- extract / replicat specific

‣ Help command

- Often with examples

‣ Run scripts

‣ View statistics

‣ ... and then some










Configuration: Create Subdirs









Configuration: Edit Parameters










port 7809










port 7809

MGRSERVNAME Oracle_GG_Mgr









Configuration: Install Service









Initial Load

• We want to have special loads that get all the data sources & targets in synch

• We can filter, transform and map the source to target or just pass the datathrough directly

• SOURCEISTABLE keyword allows us to by-pass trail files on extract

•

SPECIALRUN keyword makes for a one-time run and not a continuous process• BULKLOAD tells the replicate process to interface with SQL*Loader









Initial Load: Create Extract

• Using the GGSCI Command-line Interpreter (on the source box)

‣ ADD EXTRACT OGG_IEXT, SOURCEISTABLE

‣ EDIT PARAM OGG_IEXT

extract OGG_IEXT userid OGG_gg, password password1

discardfile E:\oracle\GG\ GG11g\dirrpt\OGG_IE XT.dsc, purge

rmthost winxpvm.rmcvm.com, mgrport 7810

rmttask replicat, group OGG_IREP

table OGG_GG.BOB;table OGG_GG.DEMO_TABLE;











Initial Load: Create Replicat

• Using the GGSCI Command-line Interpreter (on the target box)

‣ ADD REPLICAT OGG_IREP, SPECIALRUN

‣ EDIT PARAM OGG_IREP

replicat OGG_IREPdiscardfile E:\oracle\GG\GG11g_TRG\dirrpt\OGG_IREP.dsc, purge

--BULKLOAD

assumetargetdefs

userid OGG_gg_trg, password password1

map OGG_GG.BOB, target OGG_GG_TRG.BOB, colmap ( A=B,B=A );map OGG_GG.DEMO_TABLE, target OGG_GG_TRG.DEMO_TABLE, colmap

(ID=ID, DATA=DATA, ENTRY_DATE=ENTRY_DATE);









From the Doco: Filter Examples









Continuous Load









Continuous Feed: Create Extract

• Using the GGSCI Command-line Interpreter (on the source box)

‣ ADD EXTRACT OGG_EX1

‣ ADD RMTTRAIL E:\oracle\GG\GG11g_TRG\dirdat\O1 extract OGG_EX1

‣ EDIT PARAM OGG_EX1

extract OGG_EX1userid OGG_gg, password password1

discardfile E:\oracle\GG\ GG11g_1110\dirrpt\OGG_EX1.dsc, purge

--Connect to the remote host and write to trail. Path is relevant to remote host

rmthost winxpvm.rmcvm.com, mgrport 7810

rmttrail E:\oracle\GG\GG11g_TRG\dirdat\O1table OGG_GG.*;











Continuous Feed: Create Replicat

• Using the GGSCI Command-line Interpreter (on the target box)

‣ ADD REPLICAT OGG_REP1

‣ EDIT PARAM OGG_REP1

replicat OGG_REP1discardfile E:\oracle\GG\GG11g_1110_TRG\dirrpt\OGG_REP1.dsc, purge

assumetargetdefs

userid OGG_gg_trg, password password1

HANDLECOLLISIONS

map OGG_GG.*, target OGG_GG_TRG.*;









From the Doco: Parameter Examples

Sample Extract parameter fileEXTRACT capt USERID ggs, PASSWORD *********

DISCARDFILE /ggs/capt.dsc, PURGE

RMTHOST sysb, MGRPORT 7809

RMTTRAIL /ggs/dirdat/aa

TABLE fin.*; TABLE sales.*;

Sample Replicat parameter fileREPLICAT deliv USERID ggs, PASSWORD ****

SOURCEDEFS /ggs/dirdef/defs

DISCARDFILE /ggs/deliv.dsc, PURGE

GETINSERTS

MAP fin.account, TARGET fin.acctab, COLMAP (account = acct, balance =

bal, branch = branch);

MAP fin.teller, TARGET fin.telltab, WHERE (branch = “NY”);

IGNOREINSERTS

MAP fin.teller, TARGET fin.telltab, WHERE (branch = “LA”);










Oracle GoldenGate Director (2.0.0.3)









Oracle GoldenGate Director Web (2.0.0.3)









Some debugging tools

• Logfiles

‣ E:\oracle\GG\GG11g\ggserr.log

‣ E:\oracle\diag\rdbms\winxp11g\winxp11g\trace\ggs_ddl_trace.log

• SQL> select sequence#,status from v$log;

• ALTER EXTRACT OGG_EX1, BEGIN NOW

• ALTER REPLICAT OGG_REP1, extseqno 38

• SEND EXTRACT OGG_EX1, ROLLOVER

• SEND EXTRACT OGG_EX1, SKIPTRANS ...


GGSC ( ) OGG








GGSCI (winxpvm) 49> send extract OGG_ex1, showtrans

Sending SHOWTRANS request to EXTRACT OGG_EX1 ...

Oldest redo log file necessary to restart Extract is:

Redo Log Sequence Number 39, RBA 10782224

------------------------------------------------------------

XID: 5.28.1323

Items: 564442

Extract: OGG_EX1

Redo Thread: 1

Start Time: 2011-09-17:18:35:02

SCN: 0.1402704 (1402704)

Redo Seq: 39

Redo RBA: 10783248

Status: Running

GGSCI (winxpvm) 50> send extract OGG_ex1, skiptrans 5.28.1323 FORCE

Sending skiptrans request to EXTRACT OGG_EX1 ...

Transaction [XID 5.28.1323, Redo Thread 1, Start Time 2011-09-21:18:35:02, SCN 0

.1402704 (1402704)] skipped.










Oracle GoldenGate 101

Demo DML in Action









DDL Support

• DDL operations are written to the redo log

‣ CREATE / DROP

‣ ALTER

‣ RENAME

‣ GRANT (etc)

‣ Database Import

• Various parameters control the replication process

‣ DDLOPTIONS

‣ DDLERROR

‣ DDLSUBST

‣ PURGEDDLHISTORY

‣ PURGEMARKERHISTORY









DDL Support

• tables

• clusters

• indexes

• functions

• packages

• procedure

• tablespaces

• roles

• sequences

• synonyms

• triggers

• types

• views

• materialized views

• users









DDL Support

• Mapping occurs between source and target

‣ Renaming of base objects and derived objects

‣ Only propagate certain DDL actions

- EXCLUDE | INCLUDE

- OPTYPE

- OBJTYPE

- OBJNAME

- INSTR[WORDS]

- INSTRCOMMENTS[WORDS]









From the Doco: DDL Parameters Syntax

DDL &

INCLUDE UNMAPPED &

OPTYPE alter &

OBJTYPE ‘table’ &

OBJNAME “scott.tab*” &

INCLUDE MAPPED OBJNAME “*” &

EXCLUDE MAPPED OBJNAME "scott.temp*"









Enable DDL Logging

• Edit parameters for the Extract group using the GGSCI command-line tool

‣ edit param OGG_ex1

- DDL INCLUDE MAPPED

- DDLOPTIONS REPORT

• Edit parameters for the Replicat group using the GGSCI command-line tool

‣ edit param ogg_rep1

- DDLOPTIONS MAPDERIVED

- DDLERROR DEFAULT IGNORE

• Restart each group

‣ stop extract ogg_ex1

‣ start extract ogg_ex1‣ stop replicat ogg_rep1

‣ start replicat ogg_rep1









From The Doco: MAPDERIVED









DDL Operation Detected on Source

DDL operation included [INCLUDE MAPPED], optype [GRANT], objtype [OBJECT

PRIVILEGE], objowner [OGG_GG], objname [OGG_TEST_DDL].

Writing DDL operation to extract trail file.

DDL found, operation [drop procedure ogg_gg.generate_test_ddl (size 40)], start SCN

[1316328], commit SCN [1316351] instance [winxp11gvm]

DDL operation included [INCLUDE MAPPED], optype [DROP], objtype [PROCEDURE],

objowner [OGG_GG], objname [GENERATE_TEST_DDL].

Writing DDL operation to extract trail file.

SQL> grant insert on ogg_gg.ogg_test_ddl to public;

SQL> drop procedure ogg_gg.generate_test_ddl;










DDL Replicated on Target

Setting current schema for DDL operation to [SYS].

Restoring current schema for DDL operation to [OGG_GG_TRG].

From the ggserr.log

From the ggs_ddl_trace.log

DDL operation [drop procedure

"OGG_GG_TRG"."GENERATE_TEST_DDL" ], sequence [30], DDL type

[DROP] PROCEDURE, real object type [PROCEDURE], validity [], ob ject ID [],object [OGG_GG_TRG.GENERATE_TEST_DDL], real object

[OGG_GG_TRG.GENERATE_TEST_DDL], base object schema [], base

object name [], logged as [SYS]













Setting up DDL Replication

• DDL replication uses a specific schema with supporting tables to keep track of DDL operations

• Set the DDL schema in the ./GLOBALS par ameter file

‣ GGSCHEMA ogg_gg_ddl

‣ SQL> grant execute on UTL_FILE to ogg_gg_ddl; -- Allows schema to write

trace to the USER_DUMP_DEST/ggs_ddl_trace.log• Disable the Oracle RECYCLEBIN (requires database restart)

‣ alter system set recyclebin=off scope=spfile;

• Run as SYSDBA

‣ marker_setup.sql --Creates the tables to hold the DDL actions

‣ ddl_setup.sql --Creates the DDL trigger ‣ role_setup.sql --Creates a role, GGS_GGSUSER_ROLE, with DML grants to

the DDL objects. Grant this to all GG users

‣ ddl_[dis|en]able.sql --Enables/Disables the DDL trigger











Oracle GoldenGate 101

Demo DDL in Action









OWB and ODI Support

• Oracle Warehouse Builder and Oracle Data Integrator provide knowledgemodules to interact with Oracle GoldenGate

‣ Knowledge Modules are Code Templates in OWB lingo

‣ These are pre-scripted templates that will auto-magically configure OGG for the sources and targets we need

• http://www.rittmanmead.com/2010/03/22/configuring-odi-10-1-3-6-to-use-oracle-golden-gate-for-changed-data-capture/

‣ For a detailed walk-through example




http://www.rittmanmead.com/2010/03/22/configuring-odi-10-1-3-6-to-use-oracle-golden-gate-for-changed-data-capture/











ODI setup for Oracle GoldenGate









ODI Setup for Oracle GoldenGate

LOCAL_TEMP_DIR : C:\TEMP

SRC_LSCHEMA : GG_TEST_SRC

SRC_DB_USER : ogg_gg

SRC_DB_PASSWORD : password1

SRC_OGG_PATH : C:\GOLDENGATE\GOLDENGATE_SRCSTG_HOST : winxpvm.rmcvm.com

STG_MANAGER_PORT : 7910

STG_OGG_PATH : C:\GOLDENGATE\GOLDENGATE_STG

COMPATIBLE : 10











This readme file provides a detail of the different steps to be executed manually in order tocomplete the setup of the CDC using OGG.

UPLOAD FILES TO SOURCE MACHINEThe files for the source machine have been generated in C:\TEMP/ODIS_to_ODIT1/srcThese files must be copied on the source machine, to the following location C:\GoldenGate







p , g\GoldenGate_Src using the same directory structure.

For instance, files contained in C:\TEMP/ODIS_to_ODIT1/src/dirprm should end up in C:\GoldenGate

\GoldenGate_Src/dirprm

UPLOAD FILES TO STAGING MACHINEThe files for the staging machine have been generated in C:\TEMP/ODIS_to_ODIT1/stgThese files must be copied on the target machine, to the following location C:\GoldenGate\GoldenGate_Tgt using the same directory structure.

For instance, files contained in C:\TEMP/ODIS_to_ODIT1/stg/dirprm should end up in C:\GoldenGate\GoldenGate_Tgt/dirprm

RUN THE SOURCE OBEY FILEConnect to the source machine using a command line tool such as cmd on Windows or a shell onUNIX/Linux and execute the following command:C:\GoldenGate\GoldenGate_Src/ggsci paramfile C:\GoldenGate\GoldenGate_Src/diroby/ODISS.oby

GENERATE THE DEFINITION FILEConnect to the source machine using a command line tool such as cmd on Windows or a shell onUNIX/Linux and execute the following command:

C:\GoldenGate\GoldenGate_Src/defgen paramfile C:\GoldenGate\GoldenGate_Src/dirprm/ODISD.prm

COPY DEFINITION FILECopy the definition file C:\GoldenGate\GoldenGate_Src/dirdef/ODISC.def from the source machine toC:\GoldenGate\GoldenGate_Tgt/dirdef/ODISC.def on the staging machine.

RUN THE STAGING OBEY FILEConnect to the staging machine using a command line tool such as cmd on Windows or a shell onUNIX/Linux and execute the following commands:

C:\GoldenGate\GoldenGate_Tgt/ggsci paramfile C:\GoldenGate\GoldenGate_Tgt/diroby/ODIT1T.oby





Create the normal ‘mappings’ in ODI









Create the normal ‘mappings’ in ODI


S “Diff ” E l








Some “Different” Examples

• Replicate datamarts and dimension tables to a dedicated “query box”

‣ Takes the query load off the DW box that was being maxed out with growing“classic” ETL processes

‣ 2 days of setup

‣ Point front end to new DB instance

‣ Can now start working on introducing OGG to the “classic” environment whilststill having the “query box” free

‣ Point front end back to old DB when done reengineering with OGG

• Keep Oracle Application Express applications in synch on dev/test/prod

‣

APEX applications being used (not developed) on all boxes‣ Change once and don’t bother with re-deploying; Very Rapid Rollout


C l i









Conclusion

• Oracle GoldenGate offers very reliable, zero down-time movement of data

• Useful for

‣ Replication

‣ Migration

‣ DR

‣ Data distribution‣ CDC

• Relatively straight forward to set up

‣ But highly customizable

‣ Hundreds of parameters and settings to play with

‣ Secure and Encrypted• ... and Fun :)


M I f ti








More Information

• Thank you for attending this presentation

• More information can be found at http://www.rittmanmead.com

• Contact us at [email protected]

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oracle goldengate 101 - a newbie's dive into the unknown

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