ORacle Streams Queue Data

Hi,
I have setup a streams environment, can see statistics on changes being enqueued but cannot figure out how to see the actual LCR data. I have queried against my queue table and get no rows. I am hoping this is something very simple I just cannot find it late on a Friday. Please enlighten me.
Thanks
Tom

Captured LCRs are maintained in memory in the buffer queue and the contents of the LCR are not available for viewing.
Use the dynamic views V$STREAMS_CAPTURE, V$STREAMS_APPLY_COORDINATOR, V$STREAMS_APPLY_READER, and V$STREAMS_APPLY_SERVER to see the progress of LCRs through the systems.
If an error is encountered on apply, the error transaction will be placed in the Error queue. Once the error is in the error queue, you can use the scripts in the documentation (Display details of error transaction) to see the information in the LCR.
Only user-enqueued LCRs will be visible in the Streams queue table. A user-enqueued LCR is an LCR that is constructed and explicitly enqueued into the streams queue, as opposed to an LCR implicitly captured by a streams capture process.

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Here is the guidance you requested.
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http://download.oracle.com/docs/cd/B19306_01/license.102/b14199/toc.htm
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http://tahiti.oracle.com/
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Data is not replicated on target database - oracle stream

has set up streams replication on 2 databases running Oracle 10.1.0.2 on windows.
Steps for setting up one-way replication between two ORACLE databases using streams at schema level followed by the metalink doc
I entered a few few records in the source db, and the data is not getting replication to the destination db. Could you please guide me as to how do i analyse this problem to reach to the solution
setps for configuration _ steps followed by metalink doc.
==================
Set up ARCHIVELOG mode.
Set up the Streams administrator.
Set initialization parameters.
Create a database link.
Set up source and destination queues.
Set up supplemental logging at the source database.
Configure the capture process at the source database.
Configure the propagation process.
Create the destination table.
Grant object privileges.
Set the instantiation system change number (SCN).
Configure the apply process at the destination database.
Start the capture and apply processes.
Section 2 : Create user and grant privileges on both Source and Target
2.1 Create Streams Administrator :
connect SYS/password as SYSDBA
create user STRMADMIN identified by STRMADMIN;
2.2 Grant the necessary privileges to the Streams Administrator :
GRANT CONNECT, RESOURCE, AQ_ADMINISTRATOR_ROLE,DBA to STRMADMIN;
In 10g :
GRANT CONNECT, RESOURCE, AQ_ADMINISTRATOR_ROLE,DBA to STRMADMIN;
execute DBMS_STREAMS_AUTH.GRANT_ADMIN_PRIVILEGE('STRMADMIN');
2.3 Create streams queue :
connect STRMADMIN/STRMADMIN
BEGIN
DBMS_STREAMS_ADM.SET_UP_QUEUE(
queue_table => 'STREAMS_QUEUE_TABLE',
queue_name => 'STREAMS_QUEUE',
queue_user => 'STRMADMIN');
END;
Section 3 : Steps to be carried out at the Destination Database PLUTO
3.1 Add apply rules for the Schema at the destination database :
BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_RULES(
schema_name => 'SCOTT',
streams_type => 'APPLY ',
streams_name => 'STRMADMIN_APPLY',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
source_database => 'REP2');
END;
3.2 Specify an 'APPLY USER' at the destination database:
This is the user who would apply all DML statements and DDL statements.
The user specified in the APPLY_USER parameter must have the necessary
privileges to perform DML and DDL changes on the apply objects.
BEGIN
DBMS_APPLY_ADM.ALTER_APPLY(
apply_name => 'STRMADMIN_APPLY',
apply_user => 'SCOTT');
END;
3.3 Start the Apply process :
DECLARE
v_started number;
BEGIN
SELECT decode(status, 'ENABLED', 1, 0) INTO v_started
FROM DBA_APPLY WHERE APPLY_NAME = 'STRMADMIN_APPLY';
if (v_started = 0) then
DBMS_APPLY_ADM.START_APPLY(apply_name => 'STRMADMIN_APPLY');
end if;
END;
Section 4 :Steps to be carried out at the Source Database REP2
4.1 Move LogMiner tables from SYSTEM tablespace:
By default, all LogMiner tables are created in the SYSTEM tablespace.
It is a good practice to create an alternate tablespace for the LogMiner
tables.
CREATE TABLESPACE LOGMNRTS DATAFILE 'logmnrts.dbf' SIZE 25M AUTOEXTEND ON
MAXSIZE UNLIMITED;
BEGIN
DBMS_LOGMNR_D.SET_TABLESPACE('LOGMNRTS');
END;
4.2 Turn on supplemental logging for DEPT and EMPLOYEES table :
connect SYS/password as SYSDBA
ALTER TABLE scott.dept ADD SUPPLEMENTAL LOG GROUP dept_pk(deptno) ALWAYS;
ALTER TABLE scott.EMPLOYEES ADD SUPPLEMENTAL LOG GROUP dep_pk(empno) ALWAYS;
Note: If the number of tables are more the supplemental logging can be
set at database level .
4.3 Create a database link to the destination database :
connect STRMADMIN/STRMADMIN
CREATE DATABASE LINK PLUTO connect to
STRMADMIN identified by STRMADMIN using 'PLUTO';
Test the database link to be working properly by querying against the
destination database.
Eg : select * from global_name@PLUTO;
4.4 Add capture rules for the schema SCOTT at the source database:
BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_RULES(
schema_name => 'SCOTT',
streams_type => 'CAPTURE',
streams_name => 'STREAM_CAPTURE',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
source_database => 'REP2');
END;
4.5 Add propagation rules for the schema SCOTT at the source database.
This step will also create a propagation job to the destination database.
BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_PROPAGATION_RULES(
schema_name => 'SCOTT',
streams_name => 'STREAM_PROPAGATE',
source_queue_name => 'STRMADMIN.STREAMS_QUEUE',
destination_queue_name => 'STRMADMIN.STREAMS_QUEUE@PLUTO',
include_dml => true,
include_ddl => true,
source_database => 'REP2');
END;
Section 5 : Export, import and instantiation of tables from
Source to Destination Database
5.1 If the objects are not present in the destination database, perform
an export of the objects from the source database and import them
into the destination database
Export from the Source Database:
Specify the OBJECT_CONSISTENT=Y clause on the export command.
By doing this, an export is performed that is consistent for each
individual object at a particular system change number (SCN).
exp USERID=SYSTEM/manager@rep2 OWNER=SCOTT FILE=scott.dmp
LOG=exportTables.log OBJECT_CONSISTENT=Y STATISTICS = NONE
Import into the Destination Database:
Specify STREAMS_INSTANTIATION=Y clause in the import command.
By doing this, the streams metadata is updated with the appropriate
information in the destination database corresponding to the SCN that
is recorded in the export file.
imp USERID=SYSTEM@pluto FULL=Y CONSTRAINTS=Y FILE=scott.dmp IGNORE=Y
COMMIT=Y LOG=importTables.log STREAMS_INSTANTIATION=Y
5.2 If the objects are already present in the desination database, there
are two ways of instanitating the objects at the destination site.
1. By means of Metadata-only export/import :
Specify ROWS=N during Export
Specify IGNORE=Y during Import along with above import parameters.
2. By Manaually instantiating the objects
Get the Instantiation SCN at the source database:
connect STRMADMIN/STRMADMIN@source
set serveroutput on
DECLARE
iscn NUMBER; -- Variable to hold instantiation SCN value
BEGIN
iscn := DBMS_FLASHBACK.GET_SYSTEM_CHANGE_NUMBER();
DBMS_OUTPUT.PUT_LINE ('Instantiation SCN is: ' || iscn);
END;
Instantiate the objects at the destination database with
this SCN value. The SET_TABLE_INSTANTIATION_SCN procedure
controls which LCRs for a table are to be applied by the
apply process. If the commit SCN of an LCR from the source
database is less than or equal to this instantiation SCN,
then the apply process discards the LCR. Else, the apply
process applies the LCR.
connect STRMADMIN/STRMADMIN@destination
BEGIN
DBMS_APPLY_ADM.SET_SCHEMA_INSTANTIATION_SCN(
SOURCE_SCHEMA_NAME => 'SCOTT',
source_database_name => 'REP2',
instantiation_scn => &iscn );
END;
Enter value for iscn:
<Provide the value of SCN that you got from the source database>
Note:In 9i, you must instantiate each table individually.
In 10g recursive=true parameter of DBMS_APPLY_ADM.SET_SCHEMA_INSTANTIATION_SCN
is used for instantiation...
Section 6 : Start the Capture process
begin
DBMS_CAPTURE_ADM.START_CAPTURE(capture_name => 'STREAM_CAPTURE');
end;
/

You must have imported a JKM and after that these are the steps
1. Go to source datastrore and click on CDC --> Add to CDC
2. Click on CDC --> Start Journal
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4. Now execute the interface
If still it doesn't work, are you using transactions in your interface ?

Oracle Streams 'ORA-25215: user_data type and queue type do not match'

I am trying replication between two databases (10.2.0.3) using Oracle Streams.
I have followed the instructions at http://www.oracle.com/technology/oramag/oracle/04-nov/o64streams.html
The main steps are:
1. Set up ARCHIVELOG mode.
2. Set up the Streams administrator.
3. Set initialization parameters.
4. Create a database link.
5. Set up source and destination queues.
6. Set up supplemental logging at the source database.
7. Configure the capture process at the source database.
8. Configure the propagation process.
9. Create the destination table.
10. Grant object privileges.
11. Set the instantiation system change number (SCN).
12. Configure the apply process at the destination database.
13. Start the capture and apply processes.
For step 5, I have used the 'set_up_queue' in the 'dbms_strems_adm package'. This procedure creates a queue table and an associated queue.
The problem is that, in the propagation process, I get this error:
'ORA-25215: user_data type and queue type do not match'
I have checked it, and the queue table and its associated queue are created as shown:
sys.dbms_aqadm.create_queue_table (
queue_table => 'CAPTURE_SFQTAB'
, queue_payload_type => 'SYS.ANYDATA'
, sort_list => ''
, COMMENT => ''
, multiple_consumers => TRUE
, message_grouping => DBMS_AQADM.TRANSACTIONAL
, storage_clause => 'TABLESPACE STREAMSTS LOGGING'
, compatible => '8.1'
, primary_instance => '0'
, secondary_instance => '0');
sys.dbms_aqadm.create_queue(
queue_name => 'CAPTURE_SFQ'
, queue_table => 'CAPTURE_SFQTAB'
, queue_type => sys.dbms_aqadm.NORMAL_QUEUE
, max_retries => '5'
, retry_delay => '0'
, retention_time => '0'
, COMMENT => '');
The capture process is 'capturing changes' but it seems that these changes cannot be enqueued into the capture queue because the data type is not correct.
As far as I know, 'sys.anydata' payload type and 'normal_queue' type are the right parameters to get a successful configuration.
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Hi
You need to run a VERIFY to make sure that the queues are compatible. At least on my 10.2.0.3/4 I need to do it.
DECLARE
rc BINARY_INTEGER;
BEGIN
DBMS_AQADM.VERIFY_QUEUE_TYPES(
src_queue_name => 'np_out_onlinex',
dest_queue_name => 'np_out_onlinex',
rc => rc, , destination => 'scnp.pfa.dk',
transformation => 'TransformDim2JMS_001x');
DBMS_OUTPUT.PUT_LINE('Compatible: '||rc);
If you dont have transformations and/or a remote destination - then delete those params.
Check the table: SYS.AQ$_MESSAGE_TYPES there you can see what are verified or not
regards
Mette

Help with Oracle Streams. How to uniquely identify LCRs in queue?

We are using strems for data replication in our shop.
When an error occours in our processing procedures, the LCR is moved to the error queue.
The problem we are facing is we don't know how to uniquely identify LCRs in that queue, so we can run them again when we think the error is corrected.
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Hi,
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BEGIN
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END;
Thanks

Capturing data of the previous time interval with Oracle Stream(HotLog)

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For example :
BEGIN
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change_set_name => 'set_cns',
description => 'set_cns...',
change_source_name => 'HOTLOG_SOURCE',
stop_on_ddl => 'y',
begin_date => sysdate,
end_date => sysdate + 1);
END;
However if I set begin_date to previous time from now, Oracle doesn't caputre data anymore in this case.(HotLog method)
(I set begin_date => sysdate - 1/24
end_date => sysdate + 1/24.)
Does anybody know to capture the previous time interval with Oracle Stream?

Change C2 to:
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Advice on implementing oracle streams on RAC 11.2 data warehouse database

Hi,
I would like to know high level overview on implementing one-way schema level replication within same database using oracle streams on RAC 11.2 data warehouse database.
Are there any points that should be kept in mind before drafting the implementation plan.
Please share your thougts and experiences.
Thanks in advance
srh

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I would like to know high level overview on implementing one-way schema level replication within same database using oracle streams on RAC 11.2 data warehouse database.
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Oracle Streams for Archiving Data

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Edited by: vs**** on Feb 8, 2011 2:58 AM

The tasks are
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Oracle Streams VS Oracle Data Guard

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Hello,
Could you please explain me what are the different between Oracle Streams VS Oracle Data Guard?
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Data guard vs. oracle stream

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One has
1 physical standby
2 logical standby
3 streams
Only 1 is a zero-loss, high-availability solution.
2 and 3 do not support all data types, and will automatically suppress not-supported datatypes.
3 apart from that is also asynchronous, where 1 and 2 can be set up to be synchronous.
3 will be also much more difficult to troubleshoot. Basically: when you are out-of-sync you have to rebuild. You can't re-ship redolog files.
1+2 ship redolog files to the standby server, 1 uses them to recover the database, 2 uses them to mine them and to re-execute the transaction.
3 mines redolog files at the source, and sends statements to re-execute them.
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The purpose of Streams is replication, not standby.
Sybrand Bakker
Senior Oracle DBA
It is just what you want

Will Oracle Data Guard be replaced by Oracle Stream soon?

Will Oracle Data Guard be replaced by Oracle Stream soon?
In my opinion Oracle Stream can replace Oracle Data Guard completely.
Message was edited by:
frank.qian

While some of the technologies that underpin Streams are being increasingly incorporated into DataGuard, it's quite unlikely that DataGuard will go away.
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Supplemental logging with Oracle 10gR2 Streams and Data Guard

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Sorry, it's repeated. 'cus browser connection problem.

Help on Oracle streams 11g configuration

Hi Streams experts
Can you please validate the following creation process steps ?
What is need to have streams doing is a one way replication of the AR
schema from a database to another database. Both DML and DDL shall do
the replication of the data.
Help on Oracle streams 11g configuration. I would also need your help
on the maintenance steps, controls and procedures
2 databases
1 src as source database
1 dst as destination database
replication type 1 way of the entire schema FaeterBR
Step 1. Set all databases in archivelog mode.
Step 2. Change initialization parameters for Streams. The Streams pool
size and NLS_DATE_FORMAT require a restart of the instance.
SQL> alter system set global_names=true scope=both;
SQL> alter system set undo_retention=3600 scope=both;
SQL> alter system set job_queue_processes=4 scope=both;
SQL> alter system set streams_pool_size= 20m scope=spfile;
SQL> alter system set NLS_DATE_FORMAT=
'YYYY-MM-DD HH24:MI:SS' scope=spfile;
SQL> shutdown immediate;
SQL> startup
Step 3. Create Streams administrators on the src and dst databases,
and grant required roles and privileges. Create default tablespaces so
that they are not using SYSTEM.
---at the src
SQL> create tablespace streamsdm datafile
'/u01/product/oracle/oradata/orcl/strepadm01.dbf' size 100m;
---at the replica:
SQL> create tablespace streamsdm datafile
---at both sites:
'/u02/oracle/oradata/str10/strepadm01.dbf' size 100m;
SQL> create user streams_adm
identified by streams_adm
default tablespace strepadm01
temporary tablespace temp;
SQL> grant connect, resource, dba, aq_administrator_role to
streams_adm;
SQL> BEGIN
DBMS_STREAMS_AUTH.GRANT_ADMIN_PRIVILEGE (
grantee => 'streams_adm',
grant_privileges => true);
END;
Step 4. Configure the tnsnames.ora at each site so that a connection
can be made to the other database.
Step 5. With the tnsnames.ora squared away, create a database link for
the streams_adm user at both SRC and DST. With the init parameter
global_name set to True, the db_link name must be the same as the
global_name of the database you are connecting to. Use a SELECT from
the table global_name at each site to determine the global name.
SQL> select * from global_name;
SQL> connect streams_adm/streams_adm@SRC
SQL> create database link DST
connect to streams_adm identified by streams_adm
using 'DST';
SQL> select sysdate from dual@DST;
SLQ> connect streams_adm/streams_adm@DST
SQL> create database link SRC
connect to stream_admin identified by streams_adm
using 'SRC';
SQL> select sysdate from dual@SRC;
Step 6. Control what schema shall be replicated
FaeterBR is the schema to be replicated
Step 7. Add supplemental logging to the FaeterBR schema on all the
tables?
SQL> Alter table FaeterBR.tb1 add supplemental log data
(ALL) columns;
SQL> alter table FaeterBR.tb2 add supplemental log data
(ALL) columns;
etc...
Step 8. Create Streams queues at the primary and replica database.
---at SRC (primary):
SQL> connect stream_admin/stream_admin@ORCL
SQL> BEGIN
DBMS_STREAMS_ADM.SET_UP_QUEUE(
queue_table => 'streams_adm.FaeterBR_src_queue_table',
queue_name => 'streams_adm.FaeterBR_src__queue');
END;
---At DST (replica):
SQL> connect stream_admin/stream_admin@STR10
SQL> BEGIN
DBMS_STREAMS_ADM.SET_UP_QUEUE(
queue_table => 'stream_admin.FaeterBR_dst_queue_table',
queue_name => 'stream_admin.FaeterBR_dst_queue');
END;
Step 9. Create the capture process on the source database (SRC).
SQL> BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_RULES(
schema_name =>'FaeterBR',
streams_type =>'capture',
streams_name =>'FaeterBR_src_capture',
queue_name =>'FaeterBR_src_queue',
include_dml =>true,
include_ddl =>true,
include_tagged_lcr =>false,
source_database => NULL,
inclusion_rule => true);
END;
Step 10. Instantiate the FaeterBR schema at DST. by doing export
import : Can I use now datapump to do that ?
---AT SRC:
exp system/superman file=FaeterBR.dmp log=FaeterBR.log
object_consistent=y owner=FaeterBR
---AT DST:
---Create FaeterBR tablespaces and user:
create tablespace FaeterBR_datafile
'/u02/oracle/oradata/str10/FaeterBR_01.dbf' size 100G;
create tablespace ws_app_idx datafile
'/u02/oracle/oradata/str10/FaeterBR_01.dbf' size 100G;
create user FaeterBR identified by FaeterBR_
default tablespace FaeterBR_
temporary tablespace temp;
grant connect, resource to FaeterBR;
imp system/123db file=FaeterBR_.dmp log=FaeterBR.log fromuser=FaeterBR
touser=FaeterBR streams_instantiation=y
Step 11. Create a propagation job at the source database (SRC).
SQL> BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_PROPAGATION_RULES(
schema_name =>'FaeterBR',
streams_name =>'FaeterBR_src_propagation',
source_queue_name =>'stream_admin.FaeterBR_src_queue',
destination_queue_name=>'stream_admin.FaeterBR_dst_queue@dst',
include_dml =>true,
include_ddl =>true,
include_tagged_lcr =>false,
source_database =>'SRC',
inclusion_rule =>true);
END;
Step 12. Create an apply process at the destination database (DST).
SQL> BEGIN
DBMS_STREAMS_ADM.ADD_SCHEMA_RULES(
schema_name =>'FaeterBR',
streams_type =>'apply',
streams_name =>'FaeterBR_Dst_apply',
queue_name =>'FaeterBR_dst_queue',
include_dml =>true,
include_ddl =>true,
include_tagged_lcr =>false,
source_database =>'SRC',
inclusion_rule =>true);
END;
Step 13. Create substitution key columns for äll the tables that
haven't a primary key of the FaeterBR schema on DST
The column combination must provide a unique value for Streams.
SQL> BEGIN
DBMS_APPLY_ADM.SET_KEY_COLUMNS(
object_name =>'FaeterBR.tb2',
column_list =>'id1,names,toys,vendor');
END;
Step 14. Configure conflict resolution at the replication db (DST).
Any easier method applicable the schema?
DECLARE
cols DBMS_UTILITY.NAME_ARRAY;
BEGIN
cols(1) := 'id';
cols(2) := 'names';
cols(3) := 'toys';
cols(4) := 'vendor';
DBMS_APPLY_ADM.SET_UPDATE_CONFLICT_HANDLER(
object_name =>'FaeterBR.tb2',
method_name =>'OVERWRITE',
resolution_column=>'FaeterBR',
column_list =>cols);
END;
Step 15. Enable the capture process on the source database (SRC).
BEGIN
DBMS_CAPTURE_ADM.START_CAPTURE(
capture_name => 'FaeterBR_src_capture');
END;
Step 16. Enable the apply process on the replication database (DST).
BEGIN
DBMS_APPLY_ADM.START_APPLY(
apply_name => 'FaeterBR_DST_apply');
END;
Step 17. Test streams propagation of rows from source (src) to
replication (DST).
AT ORCL:
insert into FaeterBR.tb2 values (
31000, 'BAMSE', 'DR', 'DR Lejetoej');
AT STR10:
connect FaeterBR/FaeterBR
select * from FaeterBR.tb2 where vendor= 'DR Lejetoej';
Any other test that can be made?

Check the metalink doc 301431.1 and validate
How To Setup One-Way SCHEMA Level Streams Replication [ID 301431.1]
Oracle Server Enterprise Edition - Version: 10.1.0.2 to 11.1.0.6
Cheers.

ORacle Streams Queue Data

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