GoldenGate for MS SQL Server 2008 to Oracle

GoldenGate for MS SQL Server 2008 to Oracle GoldenGate for MS SQL Server 2008 to Oracle Objective Upon completion of this lesson, you will be able to configure GoldenGate to provide MS SQL Server to Oracle synchronization. During this lesson, you will learn how to: Prepare your user environment. Configure and execute the initial data synchronization process. Configure and start the change capture process of database operations. Configure and start the change delivery process of database operations. MS SQL Server to Oracle configuration The following diagram illustrates a GoldenGate configuration for log-based replication from MS SQL Server source data to an Oracle target database on Windows or UNIX. Windows server <source> MS SQL Server <dsn> Manager Manager <target> server Source <schema> Network Log Extract Collector Trails Oracle Replicat Target <owner/schema> Page 1

GoldenGate for MS SQL Server 2008 to Oracle Overview of Tasks Prepare the Environment In order to execute this lesson, the GoldenGate application must be installed on both the source and target systems. The installation includes a sample database and scripts to generate initial data as well as subsequent update operations. The source and target tables are created and loaded with initial data. The GoldenGate Manager processes are also started so that other processes may be configured and started. And finally, source definitions are generated and transfer to the target system. Configure Initial Data Synchronization Initial database synchronization is almost always required. To initially load data across heterogeneous databases, you have limited choices. GoldenGate provides the ability to perform initial data synchronization while your application remains active. This lesson demonstrates using Extract to pull data from the source files and send it directly to the Replicat component on the target system. MS SQL Server <dsn> <source> server Network <target> server Oracle Target <schema> Initial Extract Initial Replicat Source <owner/schema> Configure Change Capture The Extract process is configured to capture change data directly from the SQL Server recovery logs (transaction logs) and distribute the changes to a series of files known as a GoldenGate trails. This lesson demonstrates extracting the data with Extract and sending the data directly to the Replicat process. This is known as the direct load method. Configure Change Delivery Once the tables have been initially loaded with data, the Replicat process is configured to deliver the captured change data into the target database. Page 2

Exercise 1. Prepare the Environment Objective The goals of this exercise are to: Create the database Create SQL Server logins and users Create ODBC data source. Set up transaction logging. Create tables and populate source data. Prerequisites This lab assumes that the GLOBALS parameters have been created with a <mgr service> name and that the Manager service has been added. This should have been done when installing GoldenGate for Windows. Prepare the SQL Server 2008 source environment Install Manager 1. Configure Manager process on the source Execute the following commands on the <source> system. Note! The port numbers must be unique if you are installing GoldenGate more than once on the same server. Shell> ggsci GGSCI> EDIT PARAMS MGR In the parameter file, enter the following parameter, then save and close the file. PORT <port> Start Manager. GGSCI> START MANAGER Verify the results: Page 3

GGSCI> INFO MANAGER Create the database 2. Create the database From Start>Programs, run SQL Server Management Studio. Enter the name of the local SQL Server instance, then click connect. Note: These instructions assume SQL Server Authentication which requires the more complex, double layer, of authentication. SQL Server Authentication is an option only if it is permitted at the server level, and only Windows Authentication is enabled by default. If you are using Windows Authentication, you can leave out most of the login and password entries. This displays the main SQL Server Management Studio dialog box. Right, right-click Database and select the New Database option. Page 4

The New Database dialog box appears. In the Name box, type the <database> from the Lab Preparation worksheet. Page 5

Click OK to add the database. The main SQL Server Management Studio dialog box reappears. 3. Create SQL Server logins and users Right click Security and select the New > Login. Page 6

The New Login dialog box appears. For Name, type the <login>. Select Authentication, Page 7

If you selected SQL Server Authentication, type the <password> in the two Password fields. Under Defaults, select your <database> for Database, and leave Language set to the default. Do not click OK. Instead, from Select a page in the upper left-hand box, double click Server Roles. Under Server Role, check the box for the System Administrators role. Click OK to exit. The next step creates a schema that you will associate with the new user. While you have the database selected, click on the New Query button in the main menu. The right side of the dialog displays the SQL Query interface. Type in: Page 8

create schema <schema_name>; And press the Execute button from the toolbar. Now you need to associate the new user with the login and the schema that you have created with the new database. In the SQL Query interface, type in: create user <user_name> for login <select login_name> with default_schema=<schema_name>; And press the Execute button from the toolbar. Page 9

4. Create the ODBC system data source name The GoldenGate Extract process connects to a SQL Server database through an ODBC (Open Database Connectivity) connection. Both the Extract and Replicat components of GoldenGate require that a system data source name (DSN) be established, which stores the information about how to connect to the SQL Server. Click Start > Settings > Control Panel. Double-click Administrative Tools. Double-click Data Sources (ODBC) to open the ODBC Data Source Administrator dialog box. Click the System DSN tab, and then click the Add button. The Create New Data Source dialog box appears. Page 10

Select the SQL Server Native Client 10.0 driver and then click Finish. The Create a New Data Source to SQL Server dialog box appears. For Name, type <dsn>. Page 11

Optionally type in a description, type for this source DSN. For Which SQL Server do you want to connect to, select local if SQL Server is on the local system, or enter the server name at your SQL Server location. Click Next. Answer the question about how SQL Server should verify the login by selecting the option that you entered when creating the <login>. Then type <login> in Login ID and <password> in Password. Click Next. Make certain the default database is set to the database that you created; otherwise select Change the default database to: and select it. Leave the other settings to their defaults to use ANSI. Page 12

Click Next. Leave the next dialog box set to the defaults, and click Finish. In the confirmation, click Test Data Source to test the connection. Close the confirmation dialog box and the Create a New Data Source box. You can leave the SQL Server Management Studio running on the source system, because you will be using it later. 5. Create the practice tables and insert source data Execute the following commands on the <source> system only. Go to SQL Server Management Studio, select your database and select New Query from the toolbar. If the correct database is not displayed in the drop down box, click on the arrow and select it from the list. Click the File > Open and navigate to the demo_mss_create.sql script. Click Open to open the script in the New Query window. Execute the script by clicking the Execute Query button on the toolbar. Page 13

Verify the results using the following commands in the input window: sp_help tcustmer go sp_help tcustord go Click the X button to close the input tab. Click New Query whenever you need to run another SQL command. Following the steps you used to execute the table create script, run the demo_mss_insert.sql script to insert source data into the source tcustmer and tcustord tables. Note! Run this on the source only. Verify the results as you did before. Leave the SQL Management Studio running on the source system. Page 14

Prepare for transaction logging To support GoldenGate extraction, the following are required. Execute these steps on the <source> system only. Log truncation and non-logged bulk copy must be turned off. The SQL Server database must be set to the full recovery model (this is the default for SQL Server 2008). At least one full database backup must be done before GoldenGate processes are started for the first time. Additional log data must be enabled so GoldenGate can reconstruct update operations. 6. Turn off log truncation and bulk copy In SQL Management Studio on the source system perform the following steps to turn off log truncation and bulk copy. Clear the input window and then use the following command to check the status of the log truncation option. Type the command in the input window (upper window), then click the F5 key to execute it. exec sp_dboption '<database>', 'trunc. log on chkpt.' The following response appears in the results (lower) window with a status of either ON or OFF. If log truncation is ON, turn it off by executing the following command. exec sp_dboption '<database>', 'trunc. log on chkpt.', false The output should now show a CurrentSetting of OFF. Check the status of the non-logged bulk copy option by executing the following command: exec sp_dboption '<database>', 'select into/bulkcopy' If non-logged bulk copy is on, disable it with the following command: exec sp_dboption '<database>', ' select into/bulkcopy ', false 7. Execute backup Still in SQL Server Management Studio: Page 15

In the console tree, right-click the database name and select Tasks > Backup. The Back Up Database dialog box displays. If the backup destination is correct, skip the next two bulleted steps and initiate the backup as explained in the last step. If it is not correct, change the backup destination and click ADD. The Select Backup Destination appears, where you can select File Name and then click the navigation (...) button to navigate to a directory and specify the backup file name. Click OK to close the Select Backup Destination dialog box. The backup file is added to the Destination list box in the SQL Server Backup dialog box. Click OK to start the backup. This procedure ensures that no transaction log information is lost when GoldenGate starts up. 8. Set up capture of additional log data Perform the following steps on the source system to configure the database to log full before and after images for each update operation. From the source operating system's command shell, run GGSCI. Log into the database with the following command: GGSCI > DBLOGIN SOURCEDB <dsn>, USERID <login>, PASSWORD <password> Issue the following commands to force the logging of the full before and after image for updates. GGSCI > ADD TRANDATA <owner/schema>.tcustmer GGSCI > ADD TRANDATA <owner/schema>.tcustord Verify that supplemental logging has been turned on for these tables. GGSCI> INFO TRANDATA <owner/schema>.tcust* Create source definitions 9. Configure source definition generator Execute the following commands on the <source> system. Bring up the DEFGEN parameter file in the editor. GGSCI> EDIT PARAM DEFGEN Type in the parameters shown below. DEFSFILE./dirdef/source.def, PURGE Page 16

SOURCEDB <dsn>, USERID <login>, PASSWORD <password> TABLE <owner/schema>.tcustmer; TABLE <owner/schema>.tcustord; Exit from GGSCI. GGSCI> EXIT 10. Execute the source definition generator Execute the source definition generator from the Windows command prompt. Shell> defgen paramfile.\dirprm\defgen.prm 11. Transfer the source definition file to the target system Execute the following commands on the <source> system to transfer the definition file to the <target> system. The cd command should be set to the <target> location and the lcd to the <source> location. Shell> ftp <target> Name (<target>:<login>): <login> Password: <password> ftp> ascii ftp> cd <install loc>/dirdef ftp> lcd <install loc>/dirdef ftp> put source.def ftp> bye Note: To avoid overlaying existing definition files, always put the file as <db type>.def instead of source.def (e.g. MSSQL.def). Prepare your target Oracle environment Configure the Manager 1. Configure the Manager process on the target system Execute the following commands on the <target> system. Start the command interface Shell> cd <install location> Shell> ggsci Specify the port that the Manager should use. GGSCI> EDIT PARAMS MGR Page 17

-- GoldenGate Manager Parameter file PORT <port> Start Manager GGSCI> START MANAGER Verify the results: GGSCI> INFO MANAGER Create the tables 2. Create target Oracle tables Execute the following commands on the <target> system to run the script that creates the tables. Shell> cd <install location> Shell> sqlplus <login>/<password> SQL> @demo_ora_create Verify the results: SQL> desc tcustmer; SQL> desc tcustord; SQL> exit Page 18

Initial Data Load Exercise 2. Initial Data Load using Direct Load Method Objective These steps configure initial load groups that copy source data and apply it to the target tables. Configure initial load change capture 1. Add the initial data load extract batch task group Execute the following commands on the <source> system to add an Extract process called EINI<unique id> 1. Execute the following command in GGSCI to create the batch task. Shell> cd <install location> Shell> ggsci GGSCI> ADD EXTRACT EINI<unique id>, SOURCEISTABLE Verify the results: GGSCI> INFO EXTRACT *, TASKS 2. Configure the initial data load Extract parameter file Execute the following command in GGSCI to open the editor. GGSCI> EDIT PARAMS EINI<unique id> Add the following lines to the parameter file -- -- GoldenGate Initial Data Capture -- for TCUSTMER and TCUSTORD -- EXTRACT EINI<unique id> SOURCEDB <dsn>, USERID <login>, PASSWORD <password> RMTHOST <target>, MGRPORT <port> RMTTASK REPLICAT, GROUP RINI<unique id> TABLE <owner/schema>.tcustmer; TABLE <owner/schema>.tcustord; The process names used in lab exercises, for example EINIBD, are made up of 1) one character for the GoldenGate process (E for Extract, R for Replicat); 2) three or four to describe the process type (INI for initial data load, ORA for capture from or delivery to an Oracle database, etc.) and 3) two characters to create a unique identifier (usually your initials). Page 19

Initial Data Load Configure the initial load delivery 3. Add the initial data load Replicat batch task group Execute the following commands on the <target> system. Execute the following command in GGSCI to create the batch task. GGSCI> ADD REPLICAT RINI<unique id>, SPECIALRUN Verify the results: GGSCI> INFO RINI<unique id>*, TASKS 4. Configure the initial data load Replicat parameter file Execute the following commands on the <target> system. Execute the following command in GGSCI to open the editor. GGSCI> EDIT PARAMS RINI<unique id> Add the following lines to the parameter file -- GoldenGate Initial Data Load Delivery -- REPLICAT RINI<unique id> USERID <login>, PASSWORD <password> DISCARDFILE./dirrpt/RINI<unique id>.txt, PURGE SOURCEDEFS./dirdef/source.def MAP <owner/schema>.tcustmer, TARGET <owner/schema>.tcustmer; MAP <owner/schema>.tcustord, TARGET <owner/schema>.tcustord; Note: Remember to use <db type>.def if you renamed the source.def when you transferred it to the <target>. 5. Execute the initial data load process Execute the following commands on the <source> system. Execute the following command to start the initial data load process. GGSCI> START EXTRACT EINI<unique id> Verify the results: GGSCI> VIEW REPORT EINI<unique id> Execute the following commands on the <target> system. Verify the results: GGSCI> VIEW REPORT RINI<unique id> Page 20

Initial Data Load GGSCI> EXIT Shell> SQLPLUS <login>/<password> SQL> SELECT * FROM <owner/schema>.tcustmer SQL> SELECT * FROM <owner/schema>.tcustord Page 21

Configure Change Capture Exercise 3. Configure Change Capture Objective The goals of this exercise are to: Add the Extract process that will capture changes. Add the trail that will store the changes. Start the Extract process. Steps to configure change 1. Add the Extract checkpoint group Execute the following commands on the <source> system to create the Extract group. GGSCI> ADD EXTRACT EMSS<unique id>, TRANLOG, BEGIN NOW Verify the results: GGSCI> INFO EXTRACT EMSS<unique id> 2. Create the Extract parameter file Execute the following commands on the <source> system. Execute the following command in GGSCI to open the editor. GGSCI> EDIT PARAM EMSS<unique id> Add the following lines to the parameter file. -- -- Parameter file to capture -- TCUSTMER and TCUSTORD Changes -- EXTRACT EMSS<unique id> TRANLOGOPTIONS MANAGESECONDARYTRUNCATIONPOINT SOURCEDB <dsn>, USERID <login>, PASSWORD <password> RMTHOST <target>, MGRPORT <port> RMTTRAIL./dirdat/<trail id> TABLE <owner/schema>.tcustmer; TABLE <owner/schema>.tcustord; Note: Record the two characters selected for your <trail id>:. You will need this in the next step and when you set up the Replicat. Page 22

Configure Change Capture 3. Define the GoldenGate extract trails Execute the following commands on the <source> system to create a trail. GGSCI> ADD RMTTRAIL./dirdat/<trail id>, EXTRACT EMSS<unique id>, MEGABYTES 50 Verify the results: GGSCI> INFO RMTTRAIL * 4. Start the Extract process On the <source> system, issue the following command in GGSCI to start the Extract process. GGSCI> START EXTRACT EMSS<unique id> Verify the results: GGSCI> INFO EXTRACT EMSS<unique id>, DETAIL Page 23

Configure Change Delivery Exercise 4. Configure Change Delivery Objective The goals of this exercise are to: Set up the checkpoint table on the target system. Create a named group that includes the Replicat process and the checkpoint tables. Configure the Replicat group by adding parameters. Start the Replicat group. Set up checkpoints 1. Edit a GLOBALS file on the target system Execute the following commands on the <target> system. Edit the GLOBALS parameter file to add the checkpoint table. Shell> cd <install location> Shell> ggsci GGSCI> EDIT PARAMS./GLOBALS In the text editor, type: CHECKPOINTTABLE <owner/schema>.ggschkpt Record the checkpoint table owner and name, then save and close the file. Table owner name Note: You could name the table anything you want, but for training purposes we are using ggschkpt. 2. Activate the GLOBALS parameters For the GLOBALS configuration to take effect, you must exit the session in which the changes were made. Execute the following command to exit GGSCI. GGSCI> EXIT Page 24

Configure Change Delivery 3. Add a Replicat checkpoint table Execute the following commands on the <target> system. This step adds the checkpoint table that you specified when you created the GLOBALS parameter file. It will be created in the <dsn> database. Run GGSCI on the target. Shell> cd <install location> Shell> ggsci Execute the following commands in GGSCI. GGSCI> DBLOGIN USERID <login>, PASSWORD <password> GGSCI> ADD CHECKPOINTTABLE Configure delivery 4. Add the Replicat checkpoint group Execute the following commands on the <target> system to create the Replicat group named RMSS<unique id>. GGSCI> ADD REPLICAT RMSS<unique id>, EXTTRAIL./dirdat/<trail id> Note: Refer to your Extract set up for the correct two-character <trail id>. 5. Create Replicat parameter file Execute the following command on the <target> system to edit the Replicat parameter file. GGSCI> EDIT PARAM RMSS<unique id> Add the following lines to the parameter file. REPLICAT RMSS<unique id> USERID <login>, PASSWORD <password> HANDLECOLLISIONS SOURCEDEFS./dirdef/source.def DISCARDFILE./dirrpt/RMSS<unique id>.dsc, PURGE MAP <owner/schema>.tcustmer, TARGET <owner/schema>.tcustmer; MAP <owner/schema>.tcustord, TARGET <owner/schema>.tcustord; Note: Remember to use <db type>.def if you renamed the source.def when you transferred it to the the <target>. Page 25

Configure Change Delivery 4. Start the Replicat process Execute the following commands on the <target> system. Execute the following command in GGSCI to start the Replicat process. GGSCI> START REPLICAT RMSS<unique id> Verify the results: GGSCI> INFO REPLICAT RMSS<unique id> Discussion points Search in the Windows//UNIX Reference Guide for the information on the following questions. 1. When to use HANDLECOLLISIONS When would you use HANDLECOLLISIONS? What does it do? 2. What information is supplied by SOURCEDEFS? 3. What is the purpose of the DISCARDFILE? Page 26

Generate Activity and Verify Results Exercise 5. Generate Activity & Verify Results The goals of this exercise are to: Execute miscellaneous update, insert, and delete operations on the source system. Verify the delivery of the changes to the target Turn off the error handling used for initial load. Verify your source SQL Server 2008 results Steps to generate database operations 1. Generate inserts, updates, and deletes Execute the following commands on the <source> system. Go to SQL Server Management Studio, select your database and press New Query. If the correct database is not displayed in the drop down box, click on the arrow and select it from the list. Click the File > Open and navigate to the demo_mss_misc.sql script and click Open to open it in the input window. Execute the script by clicking the Execute Query button on the toolbar. Verify and record processing statistics with the following command in GGSCI. GGSCI> SEND EXTRACT EMSS<unique id>, REPORT GGSCI> VIEW REPORT EMSS<unique id> Verify the data by executing the following commands in the New Query window of SQL Server Management Studio on the source: select * from TCUSTMER; select * from TCUSTORD; Page 27

Generate Activity and Verify Results 3. Verify your results on the target system Execute the following commands on the <target> system to verify the target data. Shell> cd <install location> Shell> sqlplus <userid>/<password> SQL> select * from tcustmer; SQL> select * from tcustord; SQL> exit Shell> ggsci GGSCI> SEND REPLICAT RMSS<unique id>, REPORT GGSCI> VIEW REPORT RMSS<unique id> Turn off error handling 4. Turn off initial load error handling for the running delivery process GGSCI> SEND REPLICAT RMSS<unique id>, NOHANDLECOLLISIONS 5. Remove initial load error handling from the parameter file GGSCI> EDIT PARAMS RMSS<unique id> Remove the HANDLECOLLISIONS parameter. Page 28

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