Oracle Streaming in same database - 10g
Oracle Streaming in 10g database
Posted: Sep 21, 2006 4:25 AM Reply
Hello,
I am trying do streaming at table level for all dml changes from one schema(source) to another schema (target) controlled by admin schema (stream_admin). I have all these schemas in same database(10g-enterprise edition).
As given in documentations , I created
1. two queues(in_Q and out_Q) in Stream_admin,
2. two process( capture and apply process) in Stream_admin ,
3. A propagation rule for propagation between in_Q and out_Q,
4. did instantiation,
5. started both capture and apply process.
Having done that , I insert in source table and check for the same in target but alas!! nothing happens. I fail to achieve streaming.
I am not getting any error. Neither in process , nor in propagation or queues. And all queues,rules and process are enabled.
Please help.
datapump uses dbms_metadata extensively.
Problem is twofold
- the amount of data
- why on earth do you need to 'copy' these 1.2 Tb a 'number of times'
One would expect you would have tested the upgrade on a smaller test database. and you wouldn't need to fix bugs in a 1.2 Tb database.
A better idea would be to duplicate the complete database using RMAN. This doesn't perform conventional INSERTs and doesn't create redo.
Sybrand Bakker
Senior Oracle DBA
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I am trying do streaming at table level for all dml changes from one schema(source) to another schema (target) controlled by admin schema (stream_admin). I have all these schemas in same database(10g-enterprise edition).
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HR
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RPT_HR
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grantee => 'STRMADMIN',
grant_privileges => TRUE);
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CONNECT STRMADMIN/****
BEGIN
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queue_name => 'STREAMS_QUEUE',
queue_table => 'STREAMS_QUETAB',
queue_user => 'STRMADMIN');
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BEGIN
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schema_name => 'RPT_SCOTT',
streams_type => 'APPLY',
streams_name => 'APPLY_CC_STREAM',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
inclusion_rule => true,
source_database => 'TESTDB');
END;
BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_RULES(
schema_name => 'RPT_HR',
streams_type => 'APPLY',
streams_name => 'APPLY_AB_STREAM',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
inclusion_rule => true,
source_database => 'TESTDB');
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BEGIN
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apply_name => 'APPLY_CC_STREAM',
apply_user => 'STRMADMIN');
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BEGIN
DBMS_APPLY_ADM.ALTER_APPLY(
apply_name => 'APPLY_AB_STREAM',
apply_user => 'STRMADMIN');
END;
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CONNECT STRMADMIN/*****
BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_RULES(
schema_name => 'SCOTT',
streams_type => 'CAPTURE',
streams_name => 'CAPTURE_CC_STREAM',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
inclusion_rule => true,
source_database => 'TESTDB');
END;
BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_RULES(
schema_name => 'HR',
streams_type => 'CAPTURE',
streams_name => 'CAPTURE_AB_STREAM',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
inclusion_rule => true,
source_database => 'TESTDB');
END;
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CONNECT STRMADMIN/******
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source_scn NUMBER;
BEGIN
source_scn := DBMS_FLASHBACK.GET_SYSTEM_CHANGE_NUMBER();
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source_schema_name => 'SCOTT',
source_database_name => 'TESTDB',
instantiation_scn => source_scn);
END;
7. Start the Apply
CONNECT STRMADMIN/******
BEGIN
DBMS_APPLY_ADM.START_APPLY('APPLY_CC_STREAM');
END;
BEGIN
DBMS_APPLY_ADM.START_APPLY('APPLY_AB_STREAM');
END;
8. Start the Capture
CONNECT STRMADMIN/******
BEGIN
DBMS_CAPTURE_ADM.START_CAPTURE('CAPTURE_CC_STREAM');
END;
BEGIN
DBMS_CAPTURE_ADM.START_CAPTURE('CAPTURE_AB_STREAM');
END;
Waiting for your inputs!If I understand from your code, you want to do this on the same DB :
SCOTT --> RPT_SCOTT
HR --> RPT_HRSo there is a schema transformation, where is it coded ?
General info : http://download.oracle.com/docs/cd/B28359_01/server.111/b28321/strms_transform.htm
More specific on schema rename : http://download.oracle.com/docs/cd/B28359_01/server.111/b28321/strms_mtransform.htm#CHDGDHDE
Next : where are the initialisation of both capture schema ?
Missing :
execute DBMS_CAPTURE_ADM.PREPARE_SCHEMA_INSTANTIATION( schema_name => 'scott'');
execute DBMS_CAPTURE_ADM.PREPARE_SCHEMA_INSTANTIATION( schema_name => 'HR'');This tell Streams from where to capture the SCN.
Also there is an (WRONG) instantiation of SCOTT for the apply, which tells the apply to consider as valuable candidate all LCR after source_scn,
but where is the code or RPT_HR. Alas, you put for the APPLY target schema 'SCOTT' while it should have been 'RPT_SCOTT'.
the fact that is correct or false depends where you put the schema transformation. If you put the transformation at apply time then use the SOURCE schema name (SCOTT, HR) for the LCR will contains their name. If you put the transformation at capture time, then put target schema name for the LCR will contain their name (RPT_HR,RPT_SCOTT).
Let's say you put the schema transformation at capture time then
Missing:
DBMS_APPLY_ADM.SET_SCHEMA_INSTANTIATION_SCN (
source_schema_name => 'RPT_HR',
source_database_name => 'TESTDB',
instantiation_scn => source_scn);If you attache the transformation on the apply process then the code is :
DBMS_APPLY_ADM.SET_SCHEMA_INSTANTIATION_SCN (
source_schema_name => 'HR',
source_database_name => 'TESTDB',
instantiation_scn => source_scn);And this is useless:
-- useless code
BEGIN
DBMS_APPLY_ADM.ALTER_APPLY(
apply_name => 'APPLY_CC_STREAM',
apply_user => 'STRMADMIN');
END;
BEGIN
DBMS_APPLY_ADM.ALTER_APPLY(
apply_name => 'APPLY_AB_STREAM',
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/Last : You are using the same queue for 2 separated capture/apply transformation.
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