Column subsetting example

Question

The Oracle documention says that column subsetting is possible with the replication. Does anyone have an example ?
-- Daniel

Answer 1

I'm just curious-- is there a reason that you're
using CREATE_SNAPSHOT_REPOBJECT rather than
CREATE_MVIEW_REPOBJECT? I realize that they do the
same thing, but the fact that you're referring to an
old procedure name makes me concerned that you may be
referring to some older documentation which may be
doing things in an older and more complicated
fashion.
If it's not a multimaster environment, why not just
create the materialized view on the remote system,
toss it in a refresh group if necessary, and call it
a day?
Can you post the exact SQL you used in your steps?
The error generally means that some of the
parameters you specified in one or more of the
earlier steps are in conflict, so we need to see
exactly what you're doing.
JustinJustin, I use CREATE_SNAPSHOT_OBJECT because it's the command generated by the deployment templates. However, rest assured that I use the lastest documentation. Here is a script that reproduces the problem :
SQL> -- CONFIGURE MASTER SITE
SQL>
SQL> CONNECT REPADMIN/REPADMIN@D012
Connected.
REPADMIN@D012>
REPADMIN@D012> CREATE TABLE DEMO (ID NUMBER, COLUMN1 VARCHAR2(30), COL_TO_DROP VARCHAR2(30),
2      CONSTRAINT PK_DEMO PRIMARY KEY (ID));
Table created.
REPADMIN@D012>
REPADMIN@D012> CREATE MATERIALIZED VIEW LOG ON DEMO;
Materialized view log created.
REPADMIN@D012>
REPADMIN@D012> BEGIN
2      DBMS_REPCAT.CREATE_MASTER_REPGROUP(gname => 'DEMO_REPGROUP');
3
4      DBMS_REPCAT.CREATE_MASTER_REPOBJECT (
5                gname => 'DEMO_REPGROUP',
6                type => 'TABLE',
7                oname => 'DEMO',
8                sname => 'REPADMIN',
9                use_existing_object => TRUE,
10                copy_rows => FALSE);
11
12      DBMS_REPCAT.GENERATE_REPLICATION_SUPPORT(
13                sname => 'REPADMIN',
14                oname => 'DEMO',
15                type => 'TABLE',
16                min_communication => TRUE,
17                generate_80_compatible => FALSE);
18
19      DBMS_REPCAT.RESUME_MASTER_ACTIVITY(gname => 'DEMO_REPGROUP');
20 END;
21 /
PL/SQL procedure successfully completed.
REPADMIN@D012>
REPADMIN@D012> -- CONFIGURE MATERIALIZED VIEW SITE
REPADMIN@D012>
REPADMIN@D012> CONNECT REPADMIN/*****@XE
Connecté.
REPADMIN@XE>
REPADMIN@XE> CREATE DATABASE LINK D012.WORLD CONNECT TO REPADMIN IDENTIFIED BY REPADMIN USING 'D012.WORLD';
Database link created.
REPADMIN@XE>
REPADMIN@XE> CREATE MATERIALIZED VIEW DEMO_MV
2      REFRESH FAST WITH PRIMARY KEY FOR UPDATE AS
3      SELECT ID,COLUMN1 FROM [email protected];
Materialized view created.
REPADMIN@XE>
REPADMIN@XE> execute dbms_repcat.create_snapshot_repgroup(gname=>'DEMO_REPGROUP',gowner=>'"PUBLIC"',master=>'D012.WORLD',propagation_mode=>'SYNCHRONOUS');
PL/SQL procedure successfully completed.
REPADMIN@XE> execute dbms_repcat.create_snapshot_repobject(generate_80_compatible => FALSE,type=>'SNAPSHOT',sname=>'REPADMIN',oname=>'"DEMO_MV"',gname=>'DEMO_REPGROUP',gowner=>'"PUBLIC"');
BEGIN dbms_repcat.create_snapshot_repobject(generate_80_compatible => FALSE,type=>'SNAPSHOT',sname=>'REPADMIN',oname=>'"DEMO_MV"',gname=>'DEMO_REPGROUP',gowner=>'"PUBLIC"'); END;
ERROR at line 1:
ORA-23459: flavor must contain "DEMO_MV"."COL_A_DROPPER"
ORA-06512: at "SYS.DBMS_REPCAT_SNA_UTL", line 5920
ORA-06512: at "SYS.DBMS_REPCAT_SNA", line 82
ORA-06512: at "SYS.DBMS_REPCAT", line 1332
ORA-06512: at "SYS.DBMS_REPCAT", line 1307
ORA-06512: at line 1