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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

Change the name or IP address of a replication host

Use the provision utility to change a host name or IP address in the SharePlex configuration. For more information on changing the name or IP address of a replication host, see the Provision utility section in the SharePlex Reference Guide.

Set the SharePlex port number

Set the SharePlex Port Number

The SharePlex processes use TCP to communicate with each other between different systems and uses UDP to communicate within a system. The default TCP and UDP port numbers for SharePlex are both set to 2100 at the time of installation. For some deployments of SharePlex you may need to change the TCP or UDP port numbers.

Before selecting a port number, review the following points:

  • If your replication strategy requires multiple instances of sp_cop on a system, you must set a unique port number for each one. For more information, see Run Multiple Instances of SharePlex.
  • When an non-default port is required, the same number must be used for both the TCP and UDP ports, and it must be used for the TCP and UDP ports of all other instances of sp_cop that are involved in the same replication configuration. If the ports are different, sp_cop on one system cannot connect to the sp_cop on another system to send or receive messages and data.

Supported databases

All databases supported by SharePlex on all supported platforms

Set the SharePlex port on Unix and Linux systems

To set the port number on Unix and Linux systems, a SharePlex Administrator must set both the TCP and UDP port parameters in the SharePlex environment. If there is an active configuration, you will be instructed to stop access to the source objects and shut down sp_cop.

To finish setting the port in an active configuration:

  1. (If using multiple variable-data directories] Export the SP_SYS_VARDIR environment variable to point to the correct variable-data directory for the port you are setting.

    ksh shell:

    export SP_SYS_VARDIR=/full_path_of_variable-data_directory

    csh shell:

    setenv SP_SYS_VARDIR=/full_path_of_variable-data_directory

  2. Export the following environment variables.

    ksh shell:

    export SP_COP_TPORT=port

    export SP_COP_UPORT=port

    csh shell:

    setenv SP_COP_TPORT port

    setenv SP_COP_UPORT port

    where: port is the new port number

  3. Change directories to the SharePlex product directory.

  4. Start sp_cop and sp_ctrl.

    Note:If you are using multiple variable-data directories, start sp_cop with the -uport option, where port is the port number that you have chosen for the variable-data directory that you exported.

    ./sp_cop [-uport] &

  5. Run sp_ctrl.

    ./sp_ctrl

  6. In sp_ctrl, set the following SharePlex parameters.

    sp_ctrl> set param SP_COP_TPORT port

    sp_ctrl> set param SP_COP_UPORT port

  7. Do one of two things:

    • If there is not an active configuration, use the shutdown command in sp_ctrl to stop sp_cop. The next time you start sp_cop, the new port number takes effect.

      NOTE: If you do not have an active configuration, you are finished setting the port number.

    • If there is an active configuration, continue to the next step.

  8. Stop access to the replicating objects on the source system, then issue the flush command in sp_ctrl on the source system to clear the queues.

    sp_ctrl> flush o.database_identifier

    where: database_identifier is o. followed by the Oracle SID, TNS alias, or PDB name that SharePlex uses to connect to the source database (depends on whether the database is a regular Oracle instance, RAC, or PDB in a container database).

  9. On the source system, issue the qstatus command to verify that all of the messages reached the target system.

    sp_ctrl> qstatus

    Continue to issue the command until the export queue is empty.

  10. On the target system, issue the qstatus command to verify that all of the messages were posted to the database. Continue to issue the command until the post queue is empty.

  11. On the target system, issue the status command to verify that Post stopped.

    sp_ctrl> status

  12. Shut down SharePlex on the source and target systems.

    sp_ctrl> shutdown

  13. Start sp_cop on the source and target systems.

    Note:If you are using multiple variable-data directories, start sp_cop with the -uport option, where port is the port number that you have chosen for the variable-data directory that you exported.

    ./sp_cop [-uport] &

  14. Run sp_ctrl on the target system.

  15. Start the Post process.

    sp_ctrl> start post

  16. Allow users to access the replicating objects.

  17. Use the status command on the source and target systems to verify that all SharePlex processes are running.

    sp_ctrl> status

Apply an Oracle application patch or upgrade

This chapter contains procedures to follow when you need to apply an application patch or upgrade and there is an active replication configuration. These procedures apply to Oracle databases.

Contents

Before you patch or upgrade an application

Review the following topics before you patch or upgrade an application on a system where SharePlex replication is active.

Which procedure to use?

There are different procedures for applying an application patch or upgrade to an Oracle database while replication is in process. Which one to choose depends on what changes the patch or upgrade makes.

Changes made by the patch/upgrade Steps to take

If the patch/upgrade applies DDL that is not supported by SharePlex. For details on the DDL that SharePlex supports, see the SharePlexSharePlex Release Notes.

Manually apply the patch/upgrade to the source and target by following either of these procedures:

Apply Patch/Upgrade to Source then Copy it to Target

Apply Patch/Upgrade to Source and Target

If the patch/upgrade does any of the following:

  • Performs DML changes.
  • Performs supported DDL on the source system. For details on the DDL that SharePlex supports, see the SharePlexSharePlex Release Notes.
  • Changes users and security on source system (other than SharePlex)

Manually apply the patch/upgrade to the source, then allow SharePlex to replicate the changes to the target. Follow this procedure:

Apply Patch to Source and Replicate it to the Target

Note: Because this procedure assumes that SharePlex can replicate all of the changes that the patch or upgrade applies, the patch/upgrade is not applied to the target.

The effect of patches and upgrades on partitioned replication

A patch or upgrade can make changes that affect the column partitions of vertically partitioned replication in your configuration file. Take the following into account when you perform this procedure.

If the patch or upgrade does this to a table: Do this:
Adds columns that do not satisfy the column partition of the table (Optional) Drop the columns from the target table after the patch or upgrade is applied.
Adds columns that need to be in the column partition of the table Add those columns to the source and target column partition lists in the configuration file.
Drops columns that are part of the column partition of the table

Remove those columns from the source and target column partition lists in the configuration file.

Changes the name of a column that is in the column partition of a table Change the column name in the source and target column partition lists in the configuration file.

For more information, see Configure Vertically Partitioned Replication.

Naming conventions used

In these procedures, the "source" system is one of the following:

  • The source system of a single-direction replication configuration, including cascading replication.
  • All source systems of a consolidated replication configuration.
  • The trusted source system in a peer-to-peer replication configuration.

In these procedures, the "target" system is one of the following:

  • The target system of a single-direction replication configuration, including cascading and consolidated replication.
  • The secondary systems in a peer-to-peer replication configuration.

In this procedure, the SharePlex commands in the procedure apply to all sp_cop instances that apply to the replication strategy you are using (for example, all sp_cop processes on a target in consolidated replication).

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