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SharePlex 8.6.6 - 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 SharePlex parameters Prepare an Oracle environment for replication Create a configuration file Configure replication to Open Target targets Configure a replication strategy Configure partitioned replication Configure named queues Configure SharePlex to maintain a change history target Replicate Oracle DDL Set up error handling Transform data Configure SharePlex security features Activate replication in your production environment Monitor SharePlex Prevent and solve replication problems Repair out-of-sync Data Procedures to maintain Oracle high availability Make changes to an active replication environment Apply an Oracle application patch or upgrade Back up Oracle data on the source or target Tune the Capture process Tune the Post process Appendix A: Peer-To-Peer Diagram Appendix B: SharePlex environment variables

reset param

Use the reset param command to restore a parameter to its default value. The change takes effect based on the parameter’s set-at point:

  • For a set-at point of Live, the change takes effect immediately.
  • For a set-at point of Restart Process, the change takes effect the next time the affected SharePlex process is started.
  • For a set-at point of Restart Cop, the change takes effect the next time sp_cop is started (do not reboot the system).

Using command options

The following are guidelines for resetting SharePlex parameters.

  • To reset a parameter that was set with the set param command on a global basis (without process-specific options), use the reset param command without options.
  • To reset a parameter that has a process-specific value (set with one of the set param process-specific options), use one of the reset param process-specific options. Process- specific options can be used for parameters in the following modules:
Module Naming convention Function controlled
export SP_XPT Export process
import SP_IMP Import process
capture SP_OCT Capture process
post SP_OPO Post process
read SP_ORD Read process
     

Viewing current parameter settings

To view the names of SharePlex parameters, their values and set-at points, and whether or not process-specific values are in effect, use the list param command, as shown in the following example which shows both a global value for the Export process and a process-specific value for Export to sysB.

 

 

Parameter name Actual value Unit Set at
---------------------- --------------------- ------------ ------------
SP_XPT_SO_SNDBUF 0 bytes Restart Process

SP_XPT_SO_SNDBUF

 1024 bytes Restart Process

To sysB.ABC.com

Default Value: 0

     

Usage

Supported targets: All
Authorization level: Administrator (1)
Issued for: source or target system
Related commands: list param, set param

Syntax

Basic command Process-specific options Remote options
reset param {paramname

[to host]

[from host]

[for datasource]

[for datasource-datadest]

[queue queuename]

[ on host |

on host:portnumber |

on login/password@host |

on login/password@host:portnumber ]

Important: Before you begin using this command, please review all of this documentation. Improper use could result in lost target data and out-of-sync conditions.

Syntax description

Component Description
paramname

The name of the parameter that you want to restore to its default value. This argument is not case-sensitive.

Example:

sp_ctrl(sysA)> reset param SP_XPT_SO_SNDBUF

This resets the parameter for all Export processes on the system.

Process-specific command options

Option Description
to host

This option resets an Export parameter (SP_XPT_) for the Export processes to a designated target system. To restrict the command’s effect to the Export process associated with a named export queue, follow this option with the [queue queuename] option.

Example:

sp_ctrl(sysA)> reset param sp_xpt_so_sndbuf to sysB

In this example, the parameter is reset for Export to sysB, but other Export processes are not affected.

from host

This option resets an Import parameter (SP_IMP_) for the Import processes from a designated source system. To restrict the command’s effect to the Import process associated with a named export queue, follow this option with the [queue queuename] option.

Example:

sp_ctrl(sysD)> reset param sp_imp_wcmt_msgcnt from sysC

In this example, the parameter is reset for Import from sys C, but other Import processes are not affected.

fordatasource

This option resets a Capture or Read parameter (SP_OCT_ or SP_ORD_) for a designated source Oracle instance.

  • datasource is expressed as o.SID, where SID is the ORACLE_SID of the source instance.

Example:

sp_ctrl(sysA)> reset param sp_oct_replicate_dload for o.oraA

In this example, the parameter is reset for the Capture process for instance oraA, but other Capture processes are not affected.

for datasource-datadest

This option resets a Post parameter (SP_OPO_) for all Post processes posting data from one database to another. To restrict the command’s effect to the Post process associated with a named post queue, follow this option with the [queue queuename] option.

  • datasource is expressed as o.SID, where SID is the ORACLE_SID of the source instance.
  • datadest is expressed as o.SID, where SID is the ORACLE_SID of the target instance.

Example:

sp_ctrl(sysC)> reset param sp_opo_cont_on_err for o.oraA-o.oraC

In this example, the parameter is reset for the Post process for instance oraA replicating to oraC, but other Post processes are not affected.

queue queuename

This option resets a parameter for an Export, Import or Post process associated with a designated named queue.

Example:

sp_ctrl(sysA)> reset param sp_opo_poster_delay queue QA

In this example, the parameter is reset for the Post process associated with named post queue QA, but other Post processes are not affected.

Remote options

These options enable you to issue the command on a remote machine and to script commands that include a login name, password, port number, or combination of those items.

Option Description
on host

Execute the command on a remote system (one other than the one where the current sp_ctrl session is running). You are prompted for login credentials for the remote system. If used, must be the last component of the command syntax.

Example: sp_ctrl(sysB)>status on SysA

on host:portnumber

Execute the command on a remote system when a remote login and port number must be provided. If used, must be the last component of the command syntax.

Example: sp_ctrl(sysB)>status on SysA:8304

on login/password@host

Execute the command on a remote system when a remote login, password, and host name must be provided. If used, must be the last component of the command syntax.

Example: sp_ctrl(sysB)>status on john/spot5489@SysA

on login/password@host:portnumber

Execute the command on a remote system when a remote login, password, host name, and port number must be provided. If used, must be the last component of the command syntax.

Example: sp_ctrl(sysB)>status on john/spot5489@SysA:8304

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