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SharePlex 11.4 - Administration Guide

About this Guide Conventions used in this guide Revision History Overview of SharePlex Run SharePlex Run multiple instances of SharePlex Execute commands in sp_ctrl Set SharePlex parameters Configure data replication Configure replication to and from a container database Configure named queues Configure partitioned replication Configure replication to a change history target Configure a replication strategy Configure DDL replication Configure error handling Configure data transformation Configure security features Assign SharePlex users to security groups Start replication on your production systems Monitor SharePlex Prevent and solve replication problems Repair out-of-sync data Tune the Capture process Tune the Post process Recover replication after Oracle failover Make changes to an active replication environment Apply an Oracle application patch or upgrade Back up Oracle data on the source or target Troubleshooting Tips Appendix A: Peer-To-Peer Diagram Appendix B: SharePlex environment variables

Back up Oracle data on the source or target

This topic contains procedures for making backups of source and target data while replication is active.

Contents

Perform a partial backup of the source system

Perform a Partial Backup of the Source Data

To perform a partial back up of a source system (for example, to extract data or populate a data warehouse) while data is being replicated, you can perform the partial backup on the target system instead and copy the same data as you would on the source system.

This procedure does not interrupt user access to the source data and does not deactivate or reactivate the configuration file.

Supported databases

Oracle to all targets

Procedure

To perform a partial backup of the source data:

  1. On the source system, start sp_ctrl.

  2. On the source system, flush the data to the target system. This command stops the Post process and places a marker in the data stream that establishes a synchronization point between source and target data.

    sp_ctrl> flush datasource

    where: datasource is the datasource specification of the source database in the configuration file, for example o.ora1.

  3. On the target system, back up the data.

Note: The data now matches the source data at the flush marker.

  1. On the target system, start the Post process.

    sp_ctrl> start post

Perform a full backup on the source system

Perform a Full Backup of the Source System

To back up the entire source system, including SharePlex, you must shut down SharePlex replication while the backup is performed.

This procedure stops user access to the source data but does not deactivate or reactivate the configuration file. Replication resumes when started after the backup.

Supported databases

Oracle to all targets

Procedure

Perform these steps on the source system:

  1. Stop all system activity.
  2. Start sp_ctrl.

  3. Flush the data to the target system. This command stops the Post process and places a marker in the data stream that establishes a synchronization point between source and target data.

    sp_ctrl> flush datasource

    where: datasource is the datasource specification of the source database in the configuration file, for example o.ora1.

  4. Shut down SharePlex. This command shuts down SharePlex.

    sp_ctrl> shutdown

  5. Shut down the database.

  6. Perform the backup.

  7. Start the database.
  8. Start sp_cop (Unix and Linux).
  9. Start sp_ctrl.
  10. Allow users to access the database.

  11. Verify that the SharePlex Capture, Read, and Export processes started.

    sp_ctrl> status

Perform these steps on the target system:

  1. Start Post.

    sp_ctrl> start post

  2. Verify that Post started.

    sp_ctrl> status

Troubleshooting Tips

Use the following resources from the Quest Support Portal to help you troubleshoot SharePlex.

See also, Prevent and Solve Replication Problems.

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