Using Oracle Streams schema replication

Hi DBAs,


I use 11g and that you must configure replication of schema/table between 2 databases. I never used the front stream.

I spent reviewing the Oracle documentation to understand the function of current, but implementation of the replication stream is confusing. Please help with step by step instructions or any article of tutorial or demo OTN to configure the data flow.



Thank you
-Samar-

Hi Samar,

[Metalink Note 753158.1: how to configure streams in real-time environment downstream | https://metalink2.oracle.com/metalink/plsql/f?p=130:14:8789336070734834078:p14_database_id, p14_docid, p14_show_header, p14_show_help, p14_black_frame, p14_font:NOT, 753158.1, 1, 1, 1, helvetica]

The note is quite elaborative to set up a basic configuration of water courses and just your requirement.

On both servers (Source and downstream)
=============================

Conn virtue sysdba

Streams_tbs CREATE TABLESPACE DATAFILE 'streams_tbs_01.dbf' SIZE 100 M REUSE AUTOEXTEND ON MAXSIZE UNLIMITED;

Stradmin CREATE USER IDENTIFIED BY strmadmin
TABLESPACE streams_tbs default
QUOTA UNLIMITED ON streams_tbs;

GRANT DBA TO stradmin; ---> Due to a bug, you must grant the DBA privilege STRADMIN

BEGIN
DBMS_STREAMS_AUTH. () GRANT_ADMIN_PRIVILEGE
dealer-online "stradmin,"
grant_privileges-online true);
END;
/

__Checking the administrator is created

SELECT * FROM dba_streams_administrator;

Direct the logmnr to use the streams_tbs site downstream tablespace:
=============================================

exec DBMS_LOGMNR_D.SET_TABLESPACE ("streams_tbs");

Create the connection between the source and downstream:
=========================================

1. check if it is a perfect connectivity between these two databases

2. as it is a derivative of Setup before the transport of newspapers service requires same password for SYS on both sides.

3. set GLOBAL_NAMES = TRUE on both sides

4 create DBlink from both sides, so that the stradmin can communicate with each other.

create database STREAMS1 link to connect to strmadmin identified by strmadmin using 'STREAMS1 ';

Select * from global_name@STREAMS1;

Definition of the parameters of archiving downstream:
============================

Configure databases for the source database can transfer the logs to check-in on the destination site. (See you documentation on configuring standby basis)

Creating Eve-newspaper of recovery to receive again the Source data (only if you want to have mining in real time):
================================================================

-From the source:

(1) determines the size of the log file used on the source database:

Select THREAD #, GROUP #, BYTES/1024/1024 in V$ LOG;

-The station downstream:

(2) add the newspapers of the day before:

-For example, the source database has three online redo log file groups and each size of 50 MB log file. In this case, use the following instructions to create the appropriate standby log file groups.

Establishment of environment of rivers downstream on the site
================================

BEGIN
DBMS_STREAMS_ADM. () SET_UP_QUEUE
queue_table => ' stradmin. DOWNSTREAM_Q_TABLE',.
queue_name => ' stradmin. DOWNSTREAM_Q',.
queue_user => "STRADMIN");
END;
/

Select name, queue_table from user_queues;

BEGIN
DBMS_APPLY_ADM. () CREATE_APPLY
queue_name => ' stradmin. DOWNSTREAM_Q',.
apply_name-online "DOWNSTR_APPLY."
apply_captured-online TRUE
);
END;
/

Start
DBMS_APPLY_ADM. SET_PARAMETER (apply_name-online 'DOWNSTR_APPLY', parameter =>
Value of 'DISABLE_ON_ERROR', => ' n ");"
end;
/ - This will require installing flow do not stop even if there is an error

BEGIN
DBMS_CAPTURE_ADM. () CREATE_CAPTURE
queue_name => ' stradmin. DOWNSTREAM_Q',.
capture_name-online "DOWNSTR_CAP."
rule_set_name => NULL,
start_scn => NULL,
source_database-online "STREAMS1."
use_database_link to-online true.
first_scn => NULL,
logfile_assignment-online 'implied');
END;
/

BEGIN
DBMS_CAPTURE_ADM. SET_PARAMETER)
capture_name-online "DOWNSTR_CAP."
parameter-online "downstream_real_time_mine."
value => 'y');
END;
/ - Instructing capture processes of mining in real-time

= Adding schemas positive rules for the capture process.

BEGIN
DBMS_STREAMS_ADM. () ADD_SCHEMA_RULES
schema_name-online "SANTU1."
streams_type-online "capture."
streams_name-online "DOWNSTR_CAP."
queue_name => ' stradmin. DOWNSTREAM_Q',.
include_dml to-online true.
include_ddl to-online true.
include_tagged_lcr => FALSE,
source_database-online "STREAMS1."
inclusion_rule => TRUE);
END;
/

BEGIN
DBMS_STREAMS_ADM. () ADD_SCHEMA_RULES
schema_name-online "SANTU2."
streams_type-online "capture."
streams_name-online "DOWNSTR_CAP."
queue_name => ' stradmin. DOWNSTREAM_Q',.
include_dml to-online true.
include_ddl to-online true.
include_tagged_lcr => FALSE,
source_database-online "STREAMS1."
inclusion_rule => TRUE);
END;
/
= By excluding one of the table using the negative rule =.
BEGIN
DBMS_STREAMS_ADM. ADD_TABLE_RULES
(
table-name => ' SANTU1. XYZ'.
streams_type-online "capture."
streams_name-online "downstr_cap."
queue_name => ' stradmin. DOWNSTREAM_Q',.
include_dml to-online true.
include_ddl to-online true.
source_database-online "STREAMS1."
inclusion_rule-online fake - specifies the negative rule set
);
END;
/
==================================================================

Now its time to instantiate the schemas. You can use exp/imp legacy or datapump to instantiate the schemas. I use exp/imp

File System/Manager exp = log = owner = (SANTU1, SANTU2) object_consistent = y
File System/Manager IMP = log = fromuser = (SANTU1, SANTU2) touser = (SANTU1, SANTU2) streams_instantiation = y

If the instantiation is completed successfully, start applying and capture process

exec DBMS_APPLY_ADM. START_APPLY (apply_name-online 'DOWNSTR_APPLY');
exec DBMS_CAPTURE_ADM. START_CAPTURE (capture_name-online 'DOWNSTR_CAP');

Check the State of the capture process / apply:

Select capture_name, dba_capture State;
Select capture_name, State of v$ streams_capture;

Select apply_name, dba_apply State;
Select apply_name, State of v$ streams_apply_server;

Test the configuration. Also note that it is not necessary to maintain the database in archivelog mode downstream.

Tried to explain that the Basic, in short things, but please pass through the documentation.

Kind regards
S.K.

Tags: Database

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