Comments on: Asynchronous Hotlog Distributed Change Data Capture and OWB “Paris” http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/ Delivered Intelligence Mon, 15 Mar 2010 14:12:52 -0400 http://wordpress.org/?v=2.8.4 hourly 1 By: Rittman Mead Consulting » Blog Archive » Collaborate’08 Days 2 and 3 http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-4907 Rittman Mead Consulting » Blog Archive » Collaborate’08 Days 2 and 3 Wed, 16 Apr 2008 19:19:06 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-4907 [...] is something many customers have asked us about. I set up a CDC demo system a couple of years ago - this page on our blog is one of our most popular in terms of page requests - but I’ve not used it in [...] [...] is something many customers have asked us about. I set up a CDC demo system a couple of years ago – this page on our blog is one of our most popular in terms of page requests – but I’ve not used it in [...]

]]> By: jorge http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-779 jorge Tue, 04 Mar 2008 17:25:41 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-779 Hi we are using Async Distributed Hotlog CDC to replicate changes from one DB to another one, both 10gR2. It works except for Updates. When we update one field in the source table we get two records in the change table marked as OPERATION$ UO and UN (before and after image). The problem is that we only see data in the columns that have been changed, but not all the record. In Sync CDC you get the full row before and after image. Is that a bug of our CDC setting or is expected behaviour? Regards Hi

we are using Async Distributed Hotlog CDC to replicate changes from one DB to another one, both 10gR2. It works except for Updates. When we update one field in the source table we get two records in the change table marked as OPERATION$ UO and UN (before and after image). The problem is that we only see data in the columns that have been changed, but not all the record. In Sync CDC you get the full row before and after image. Is that a bug of our CDC setting or is expected behaviour?

Regards

]]> By: Angel Mendoza http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-781 Angel Mendoza Wed, 09 Jan 2008 22:35:17 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-781 Is the STAGING Db the same DB as the target DB in this example? I'm getting confused with all the documentation that I find, do we have the following? SOURCE DB ---- STAGING DB ---- TARGET DB????? Or do we have this? SOURCE DB ---- STAGING AND TARGET DB????? Please some help is really needed here. Is the STAGING Db the same DB as the target DB in this example?

I’m getting confused with all the documentation that I find, do we have the following?

SOURCE DB —- STAGING DB —- TARGET DB?????

Or do we have this?

SOURCE DB —- STAGING AND TARGET DB?????

Please some help is really needed here.

]]> By: michel http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-780 michel Thu, 12 Jul 2007 19:37:22 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-780 Hi Mark, * Great blog site! * We are presently considering using the Oracle CDC framework with 10gR2 as a front-end for our subsequent ETL processing. questions : a) Is it possible to configure Oracle CDC to "track" table structure changes within our OLTP database (not just data changes)? b) Along the same lines, what happens from one incremental load to the next of our DW if a published source table's structure is changed ... how is this carried forward into the change table ? Regards, Michel Hi Mark,

* Great blog site!

* We are presently considering using the Oracle CDC framework with 10gR2 as a front-end for our subsequent ETL processing.

questions :
a) Is it possible to configure Oracle CDC to “track” table structure changes within our OLTP database (not just data changes)?

b) Along the same lines, what happens from one incremental load to the next of our DW if a published source table’s structure is changed … how is this carried forward into the change table ?

Regards,
Michel

]]> By: darren http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-778 darren Sat, 12 May 2007 06:01:51 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-778 Nevermind..it's work amazingly, i've made a mistake with adding supplemental log things...by the way, it's a cool guide by Mr.Rittman and Mr. Van de Wiel!! Really helpful. =) Nevermind..it’s work amazingly, i’ve made a mistake with adding supplemental log things…by the way, it’s a cool guide by Mr.Rittman and Mr. Van de Wiel!! Really helpful. =)

]]> By: TongucY http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-768 TongucY Thu, 10 May 2007 06:37:43 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-768 If global_pains, pardon I mean global_names is not changeable at source maybe this can be a workaround; create table tong(id int); create materialized view log on tong NOLOGGING PCTFREE 0 PCTUSED 99 WITH SEQUENCE,ROWID( id ) INCLUDING NEW VALUES; INSERT INTO tong VALUES (1); UPDATE tong SET ID = 2 WHERE ID = 1; DELETE FROM tong WHERE ID = 2; select * from MLOG$_tong; ID M_ROW$$ SEQUENCE$$ SNAPTIME$$ DMLTYPE$$ OLD_NEW$$ CHANGE_VECTOR$$ ---------- -------------------------------------------------------------------------------- ---------- ----------- --------- --------- -------------------------------------------------------------------------------- 1 AAAPKOAAEAAA5LFAAA 5 01.01.4000 I N FE 1 AAAPKOAAEAAA5LFAAA 6 01.01.4000 U U 02 2 AAAPKOAAEAAA5LFAAA 7 01.01.4000 U N 02 2 AAAPKOAAEAAA5LFAAA 8 01.01.4000 D O 00 I also tried a logon trigger to change global_names at source for only the cdc user, it agian didnt work :( If global_pains, pardon I mean global_names is not changeable at source maybe this can be a workaround;

create table tong(id int);

create materialized view log on tong
NOLOGGING PCTFREE 0 PCTUSED 99
WITH SEQUENCE,ROWID( id )
INCLUDING NEW VALUES;

INSERT INTO tong VALUES (1);
UPDATE tong SET ID = 2 WHERE ID = 1;
DELETE FROM tong WHERE ID = 2;

select * from MLOG$_tong;

ID M_ROW$$ SEQUENCE$$ SNAPTIME$$ DMLTYPE$$ OLD_NEW$$ CHANGE_VECTOR$$
———- ——————————————————————————– ———- ———– ——— ——— ——————————————————————————–
1 AAAPKOAAEAAA5LFAAA 5 01.01.4000 I N FE
1 AAAPKOAAEAAA5LFAAA 6 01.01.4000 U U 02
2 AAAPKOAAEAAA5LFAAA 7 01.01.4000 U N 02
2 AAAPKOAAEAAA5LFAAA 8 01.01.4000 D O 00

I also tried a logon trigger to change global_names at source for only the cdc user, it agian didnt work :(

]]> By: darren http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-770 darren Wed, 09 May 2007 08:29:33 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-770 I've tried your example... i'm failed at this section : select operation$ operation 2 , to_char(timestamp$, 'dd-mon-yyyy hh24:mi:ss') 3 , order_id 4 , order_date 5 , order_mode 6 , order_status 7 from orders_ct 8 order by timestamp$ 9 / It return NO rows selected.... can you help me please? I’ve tried your example… i’m failed at this section :

select operation$ operation
2 , to_char(timestamp$, ‘dd-mon-yyyy hh24:mi:ss’)
3 , order_id
4 , order_date
5 , order_mode
6 , order_status
7 from orders_ct
8 order by timestamp$
9 /

It return NO rows selected…. can you help me please?

]]> By: darren http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-769 darren Tue, 08 May 2007 09:40:11 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-769 Hey, i just wonder how to connect the CDC process with transformation and loading process that you've mentioned it before in Real-Time data warehousing ?? Thanks, Darren Hey, i just wonder how to connect the CDC process with transformation and loading process that you’ve mentioned it before in Real-Time data warehousing ??

Thanks,

Darren

]]> By: Brian http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-772 Brian Mon, 07 May 2007 19:10:24 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-772 Never mind...global_names was not set to TRUE, once corrected the table created successfully. Never mind…global_names was not set to TRUE, once corrected the table created successfully.

]]> By: Brian http://www.rittmanmead.com/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/comment-page-1/#comment-775 Brian Thu, 03 May 2007 15:11:36 +0000 http://www.rittmanmead.com/wp2/2006/04/14/asynchronous-hotlog-distributed-change-data-capture-and-owb-paris/#comment-775 I was able to follow the steps in this walkthrough until I got to the creation of the change tables. When I call DBMS_CDC_PUBLISH.CREATE_CHANGE_TABLE, I am getting the following error: ERROR at line 1: ORA-26667: invalid STREAMS parameter ORA-06512: at "SYS.DBMS_CDC_PUBLISH", line 611 ORA-06512: at line 1 Here is the call: SQL> exec DBMS_CDC_PUBLISH.CREATE_CHANGE_TABLE('cdcpub_stg','ACCOUNT_TYPES_CT','IDLE2_SET','IDLE2','ACCOUNT_TYPES','ID NUMBER, SNAME VARCHAR2(2), NAME VARCHAR2(60), TAX_FLG VARCHAR2(1)','new','Y','N','N','N','N','N','N','TABLESPACE cdcpub_stg_data'); Any suggestions or solutions? Thanks, Brian I was able to follow the steps in this walkthrough until I got to the creation of the change tables. When I call DBMS_CDC_PUBLISH.CREATE_CHANGE_TABLE, I am getting the following error:

ERROR at line 1:
ORA-26667: invalid STREAMS parameter
ORA-06512: at “SYS.DBMS_CDC_PUBLISH”, line 611
ORA-06512: at line 1

Here is the call:
SQL> exec DBMS_CDC_PUBLISH.CREATE_CHANGE_TABLE(’cdcpub_stg’,'ACCOUNT_TYPES_CT’,'IDLE2_SET’,'IDLE2′,’ACCOUNT_TYPES’,'ID NUMBER, SNAME VARCHAR2(2), NAME VARCHAR2(60), TAX_FLG VARCHAR2(1)’,'new’,'Y’,'N’,'N’,'N’,'N’,'N’,'N’,'TABLESPACE cdcpub_stg_data’);

Any suggestions or solutions?

Thanks,
Brian

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