Oracle GoldenGate Tutorial 7

Oracle GoldenGate Tutorial 7 – configuring DDL synchronization

In addition to providing replication support for all DML statements, we can also configure the GoldenGate environment to provide DDL support as well.

A number of prerequisite setup tasks need to be performed which we willl highlight here.

Run the following scripts from the directory where the GoldenGate software was installed.

The assumption here is that the database user GGS_OWNER has already been created and granted the required roles and privileges as discussed in our earlier tutorial.

Note - run the scripts as SYSDBA

SQL> @marker_setup

Marker setup script

You will be prompted for the name of a schema for the GoldenGate database objects.
NOTE: The schema must be created prior to running this script.
NOTE: Stop all DDL replication before starting this installation.

Enter GoldenGate schema name:GGS_OWNER

Marker setup table script complete, running verification script...
Please enter the name of a schema for the GoldenGate database objects:
Setting schema name to GGS_OWNER

MARKER TABLE
-------------------------------
OK

MARKER SEQUENCE
-------------------------------
OK

Script complete.

SQL> alter session set recyclebin=OFF;
Session altered.

SQL> @ddl_setup

GoldenGate DDL Replication setup script

Verifying that current user has privileges to install DDL Replication...

You will be prompted for the name of a schema for the GoldenGate database objects.
NOTE: The schema must be created prior to running this script.
NOTE: On Oracle 10g and up, system recycle bin must be disabled.
NOTE: Stop all DDL replication before starting this installation.

Enter GoldenGate schema name:GGS_OWNER

You will be prompted for the mode of installation.
To install or reinstall DDL replication, enter INITIALSETUP
To upgrade DDL replication, enter NORMAL
Enter mode of installation:INITIALSETUP

Working, please wait ...
Spooling to file ddl_setup_spool.txt

Using GGS_OWNER as a GoldenGate schema name, INITIALSETUP as a mode of installation.

Working, please wait ...

RECYCLEBIN must be empty.
This installation will purge RECYCLEBIN for all users.
To proceed, enter yes. To stop installation, enter no.

Enter yes or no:yes

DDL replication setup script complete, running verification script...
Please enter the name of a schema for the GoldenGate database objects:
Setting schema name to GGS_OWNER

DDLORA_GETTABLESPACESIZE STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

CLEAR_TRACE STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

CREATE_TRACE STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

TRACE_PUT_LINE STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

INITIAL_SETUP STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

DDLVERSIONSPECIFIC PACKAGE STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

DDLREPLICATION PACKAGE STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

DDLREPLICATION PACKAGE BODY STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

DDL HISTORY TABLE
-----------------------------------
OK

DDL HISTORY TABLE(1)
-----------------------------------
OK

DDL DUMP TABLES
-----------------------------------
OK

DDL DUMP COLUMNS
-----------------------------------
OK

DDL DUMP LOG GROUPS
-----------------------------------
OK

DDL DUMP PARTITIONS
-----------------------------------
OK

DDL DUMP PRIMARY KEYS
-----------------------------------
OK

DDL SEQUENCE
-----------------------------------
OK

GGS_TEMP_COLS
-----------------------------------
OK

GGS_TEMP_UK
-----------------------------------
OK

DDL TRIGGER CODE STATUS:

Line/pos   Error
---------- -----------------------------------------------------------------
No errors  No errors

DDL TRIGGER INSTALL STATUS
-----------------------------------
OK

DDL TRIGGER RUNNING STATUS
-----------------------------------
ENABLED

STAYMETADATA IN TRIGGER
-----------------------------------
OFF

DDL TRIGGER SQL TRACING
-----------------------------------
0

DDL TRIGGER TRACE LEVEL
-----------------------------------
0

LOCATION OF DDL TRACE FILE
--------------------------------------------------------------------------------
/u01/app/oracle/diag/rdbms/gavin/gavin/trace/ggs_ddl_trace.log

Analyzing installation status...

STATUS OF DDL REPLICATION
--------------------------------------------------------------------------------
SUCCESSFUL installation of DDL Replication software components

Script complete.
SQL>

SQL> @role_setup

GGS Role setup script

This script will drop and recreate the role GGS_GGSUSER_ROLE
To use a different role name, quit this script and then edit the params.sql script to change
the gg_role parameter to the preferred name. (Do not run the script.)

You will be prompted for the name of a schema for the GoldenGate database objects.
NOTE: The schema must be created prior to running this script.
NOTE: Stop all DDL replication before starting this installation.

Enter GoldenGate schema name:GGS_OWNER
Wrote file role_setup_set.txt

PL/SQL procedure successfully completed.

Role setup script complete

Grant this role to each user assigned to the Extract, GGSCI, and Manager processes, by using the following SQL command:

GRANT GGS_GGSUSER_ROLE TO

where  is the user assigned to the GoldenGate processes.

SQL> grant ggs_ggsuser_role to ggs_owner;

Grant succeeded.

SQL> @ddl_enable

Trigger altered.

SQL> @ddl_pin GGS_OWNER

PL/SQL procedure successfully completed.

PL/SQL procedure successfully completed.

PL/SQL procedure successfully completed.

Turn Recyclebin OFF

We need to set the parameter recyclebin to OFF via the ALTER SYSTEM SET RECYCLEBIN=OFF command in order to prevent this error which we will see if we try and configure DDL support and then start the Extract process.

2010-02-19 11:13:30 GGS ERROR 2003 RECYCLEBIN must be turned off. For 10gr2 and up, set RECYCLEBIN in parameter file to OFF. For 10gr1, set _RECYCLEBI
N in parameter file to FALSE. Then restart database and extract.
2010-02-19 11:13:30 GGS ERROR 190 PROCESS ABENDING.

Enable additional logging at the table level

Note- We had earlier enabled additional supplemental logging at the database level. Using the ADD TRANDATA command we now enable it at even the table level as this is required by GoldenGate for DDL support.

GGSCI (redhat346.localdomain) 5> DBLOGIN USERID ggs_owner, PASSWORD ggs_owner
Successfully logged into database.

GGSCI (redhat346.localdomain) 6> ADD TRANDATA scott.emp

Logging of supplemental redo data enabled for table SCOTT.EMP.

Edit the parameter file for the Extract process to enable DDL synchronization

We had earlier created a parameter file for an Extract process ext1. We now edit that parameter file and add the entry
DDL INCLUDE MAPPED

This means that DDL support is now enabled for all tables which have been mapped and in this case it will only apply to the SCOTT.EMP table as that is the only table which is being processed here. We can also use the INCLUDE ALL or EXCLUDE ALL or wildcard characters to specify which tables to enable the DDL support for.

GGSCI (redhat346.localdomain) 1> EDIT PARAM EXT1

EXTRACT ext1
USERID ggs_owner, PASSWORD ggs_owner
RMTHOST 10.53.100.100, MGRPORT 7809
RMTTRAIL /u01/oracle/software/goldengate/dirdat/rt
DDL INCLUDE MAPPED
TABLE scott.emp;

Test the same

We will now alter the structure of the EMP table by adding a column and we can see that this new table structure is also reflected on the target system.

On Source

SQL> ALTER TABLE EMP ADD NEW_COL VARCHAR2(10);
Table altered.

On Target

SQL> desc emp
Name Null? Type
—————————————– ——– —————————-
EMPNO NOT NULL NUMBER(4)
ENAME VARCHAR2(10)
JOB VARCHAR2(20)
MGR NUMBER(4)
HIREDATE DATE
SAL NUMBER(7,2)
COMM NUMBER(7,2)
DEPTNO NUMBER(2)
MYCOL VARCHAR2(10)
NEW_COL VARCHAR2(10)

Anúncios

Sobre Alexandre Pires

ORACLE OCS Goldengate Specialist, OCE RAC 10g R2, OCP 12C, 11g, 10g , 9i e 8i - Mais de 25 anos de experiência na área de TI. Participei de projetos na G&P alocado na TOK STOK, EDINFOR alocado na TV CIDADE "NET", 3CON Alocado no PÃO DE AÇUCAR, DISCOVER alocado na VIVO, BANCO IBI e TIVIT, SPC BRASIL, UOLDIVEO alocado no CARREFOUR e atualmente na ORACLE ACS atendendo os seguintes projetos: VIVO, CLARO, TIM, CIELO, CAIXA SEGUROS, MAPFRE, PORTO SEGURO, SULAMERICA, BRADESCO SEGUROS, BANCO BRADESCO, BASA, SANTANDER, CNJ, TSE, ELETROPAULO, EDP, SKY, NATURA, ODEBRESHT, NISSEI, SICREDI, CELEPAR, TAM, TIVIT, IBM, SMILES, CELEPAR, SERPRO,OKI,BANCO PAN, etc
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