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SharePlex 9.4 - Administration Guide

About this Guide Conventions used in this guide 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 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

Make Oracle changes that affect replication

This topic helps you make common changes to the Oracle environment while replication is active.

Supported databases

Oracle on Linux and UNIX

Move the location of ORACLE_HOME

If you change the ORACLE_HOME, you need to relink SharePlex to the Oracle libraries.

  1. Shut down SharePlex.

    sp_ctrl> shutdown

  2. Move the ORACLE_HOME.
  3. Edit the oratab file to point to the new ORACLE_HOME.
  4. Edit the defaults.yaml file to point to the new ORACLE_HOME. This file is in the data subdirectory of the SharePlex product directory.
  5. Start SharePlex.

Change the target ORACLE_SID

  1. On the source system, run sp_ctrl.

  2. On the source system, copy the active configuration file to a new name, but do not deactivate it.

    sp_ctrl> copy config filename to newname

  3. On the source system, open the new configuration file.

    sp_ctrl> edit config filename

  4. Change the ORACLE_SID to the new one in all of the routing maps that include this target database and target system.
  5. Save and close the configuration file, but do not activate it.
  6. On the source system, stop user access to the objects involved in replication.

  7. On the source system, flush the data in the queues to the target. This stops the Post process and establishes a synchronization point between the source and target databases.

    sp_ctrl> flush datasource

    where: datasource is the database indicator of the source instance, for example o.oraA.

  8. On the source system, activate the new configuration file. This will deactivate the original configuration file.

    sp_ctrl> activate config filename

    Note: The activation will be brief because SharePlex does not need to analyze the tables.

  9. On the source system, allow users to access the objects involved in replication.

  10. On the target system, verify that Post stopped. If Post is not stopped, continue to issue the command until it shows that Post stopped.

    sp_ctrl> status

  11. On the target system, shut down the database and then rename the ORACLE_SID.

  12. On the target system, start Post.

    sp_ctrl> start post

Change the SharePlex database account

You can change the user name (schema or database), the password, or both in the SharePlex database account. The database account was established during the installation of SharePlex. These procedures guide you through the process in the correct order to maintain an active replication configuration.

Supported databases

All SharePlex-supported databases

Procedure

This procedure changes the user account name and/or password of the SharePlex user account in a database. This user account is the one that the SharePlex processes use to connect to the database when performing replication tasks.

Important! If using multiple variable-data directories, you must run this procedure for each one that you want to change.

  1. (Unix and Linux only) If you are using multiple variable-data directories, export the environment variable that points to the variable-data directory for the SharePlex instance for which you are changing the account name or password.

    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. Run sp_ctrl on the system where you are changing the password.

  3. Stop the SharePlex processes on the system where you are changing the account information. For example, if you are changing the SharePlex account in the source database, stop Capture and Read. If you are changing the account in the target database, stop Post.

    sp_ctrl> stop service

  4. Verify that all SharePlex replication processes for this instance of SharePlex are stopped.

    sp_ctrl> status

  5. Log in to the database as a DBA user and change the SharePlex account name and/or password to the new ones. Important! Do not delete the SharePlex objects!

  6. If you changed the account name, copy all of the SharePlex database objects from the old account to the new one.

    Note: Keep the old account and SharePlex objects as backup until you are certain replication resumes properly.

  7. In sp_crtl, issue the following command to change the account name and/or password in the SharePlex internal records.

    To change the user account:

    sp_ctrl> connection {o.SID | r.database} set user=username

    To change the password:

    sp_ctrl> connection {o.SID | r.database} set password=password

    where:

    • SID is the ORACLE_SID of the database, if the database is Oracle.
    • database is the name (not the DSN) of the database, if the database is non-Oracle.
    • username is the new account name.

    • password is the new password.

  8. Start the SharePlex processes.

    sp_ctrl> start service

Change the name or IP address of a replication host

Description

Use the provision utility to change a host name or IP address in the SharePlex configuration.

The SharePlex processes rely on the host names or IP addresses of the source and target machines to route data properly. The provision utility enables you to change host names or IP addresses within an active SharePlex instance, without reactivating a new configuration.

Note: The provision utility does not change anything in the database. It only affects SharePlex internal objects.

Supported databases

All databases supported by SharePlex on all supported platforms

Guidelines for using provision

  • provision is only valid for SharePlex version 6.1.1 and above.
  • (SharePlex 7.0.2 only) If provision is being used because the host name of a machine changed, contact Quest Support to request a new license. Otherwise SharePlex will not start after the change.

  • (SharePlex 7.0.2 only) Add the following parameter to the param-defaults file before you run provision:

    SP_CFP_DEBUG I live int() 0x00000000

  • If running SharePlex on an AIX machine, set EXTSHM before running provision.

    export EXTSHM=ON

  • Run provision on all of the machines in the SharePlex configuration. Each machine can reference the IP addresses of all the other machines.

Run provision

  1. Stop sp_cop. If sp_cop is running, provision will fail. Note: provision prevents sp_cop from being started while it is running.

  2. Using the command line of the operating system, run provision from the SharePlex util sub-directory of productdir with the following syntax:

    provision -f old_name[:old_ipaddress] -t new_name[:new_ipaddress] [-p port] [-n]

    To change the IP address only, use the following syntax:

    provision -o old_ipaddress-s new_ipaddress [-p port ] [-n]

    Argument Input
    -f old_hostname[:old_ipaddress]
    • -f is required and represents "from."
    • old_hostname is the old (current) host name.
    • old_IPaddress is the old IP address. Use if the IP address cannot be obtained from the network.
    -t new_hostname[:new_ipaddress]
    • -t is required and represents "to."
    • new_hostname is the new host name.
    • new_IPaddress is the new IP address. Use if the IP address cannot be obtained from the network.
    -p port For Windows systems, specifies the port of the SharePlex instance for which provision is being run.
    -n

    Runs provision without actually making any changes. Generates a report on the changes that provision will make.

    Important! The best practice is to run provision with -n first, to make certain you agree with the potential changes, then run it without -n to make the changes.

    -o old_ipaddress

    If the command is run with the –o and -s options, then provision will look for the IP address specified in the o- option in every hostdb file and, if found, will change it to the IP address specified in the –s option.

    • -o is required.
    • old_ipaddress is the old (current) IP address.

    Note: When running the provision command with the -o and -s options, it is highly recommended that you stop sp_cop, but it is not required when using these options.

    -s new_ipaddress
    • -s is required.
    • new_ipaddress is the new IP address.
    Example:

    provision -f oldname -t newname -n

    provision -o old_ipaddress -s new_ipaddress -n

  3. View the event log to view every change that was made. If the provision run fails or you do not agree with the changes that were made, you can undo them by running the undo_provision script. See Undo changes made by provision .

Undo changes made by provision

The provision utility creates an undo_provision script that can be used to restore the host names and IP addresses to their previous state. Run the undo_provision script from the util subdirectory of the SharePlex product directory. There are no input arguments to this script.

Known issues

The following may occur but do not affect the integrity of the replication environment:

  • The provision utility does not change the active configuration file. This means that the configuration file no longer represents the current state of replication after provision is run. If you need to run the compare config command, or if you decide to reactivate the configuration, update the host name or IP address in the configuration file first.
  • If an Export or Import error occurred when SharePlex connected to a machine before the name or address was changed, the error status persists and cannot be cleared.
  • If the new or changed machine is a source machine, provision generates new routing information, but the Read process may still have the old routing in its cache. When you start sp_cop, Read might generate a warning that the stored IP address does not match the one for the machine. You can ignore this error.
  • After provision is run for a source host, it might not update the "hostname" column in SHAREPLEX_ACTID table with the new host name details. If that column is not correctly updated, you must update the SHAREPLEX_ACTID table manually to specify the new host name. This is only required if the name change affected a source machine.

Set the SharePlex port number

The SharePlex processes use TCP and UDP ports to communicate with each other on different systems. 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 port number or add additional ones.

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.
  • On the Windows platform, SharePlex permits a maximum of 64 port numbers (SharePlex instances) on one system.

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.

  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.

    To finish setting the port in an active configuration

  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

Set the SharePlex port on Windows systems

On Windows systems, SharePlex port numbers are stored in the Windows Registry. If it becomes necessary to change a port number, this is the SharePlex entry location:

\HKEY_LOCAL_MACHINE\Software\Wow6432node\Quest Software\SharePlex.

  1. Log onto Windows as a SharePlex Administrator using your system password and user name. Your user name must be assigned to the SharePlex Admin group.
  2. Run the SpUtils utility.
  3. Select the SharePlex Services tab.
  4. Under Port, select the port number for the instance of SharePlex whose port you want to change.
  5. Under SharePlex Service Status, click Stop.
  6. Click Close.
  7. From the Start menu, select Run.
  8. In the Run dialog box, type regedit to open the Registry Editor.
  9. In the Registry Editor, under \HKEY_LOCAL_MACHINE\Software\Wow6432node\Quest Software\SharePlex, right click the current port number, then select Rename.
  10. Replace the highlighted port number with the new number.
  11. Click the new port number to highlight it.
  12. In the Name column of the right-hand pane, right-click the SP_SYS_VARDIR entry that is associated with the new port number, then select Modify.
  13. In the Edit String dialog, change the port number (only the port number) in the path to the new port number, then click OK.
  14. Exit the Registry Editor.
  15. In the Windows file explorer, navigate to the variable-data directory for which you changed the port number (the one whose name still shows the old port number).
  16. Right click the name, and then use the Rename command to change only the port number in the name to the new port number.
  17. Run the SpUtils utility, then select the SharePlex Services tab.
  18. Under Port, select the new port number.
  19. Under SharePlex Service Status, click Install to establish the SharePlex service under the new port.
  20. After Current State shows that the service is installed, click Start to start the service.
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