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)
Coming Next! – Filtering Data and Data manipulation and transformation
hi gavin:
can you tell me how add sequence to ddl support please, i do it with the
sequence myschema.* parameter but not working for me, thanks in advance.
Hi – could you kindly send me the contents of the parameter file you are using -and also what is the error you are getting …thanks
2010-08-20 09:42:54 GGS ERROR 112 Oracle GoldenGate Capture for Oracle, ext1.prm: There is a problem in network communication, a remote file problem, encryption keys for target and source do not match (if using ENCRYPT) or an unknown error. (Remote file used is ./dirdat/rt000007, reply received is Unable to lock file “./dirdat/rt000007″ (error 13, Permission denied). Lock currently held by process id (PID) 13625).
please advice
Hi Soni – check the OS level file system permissions on the target server – the goldengate process most probably does not have write permission on that directory
Hi Mahesh – there are some notes on 10g OEM installation (with screenshots) in the Documents and Whitepapers section of the website