Can we capture changes made to the objects other than tables using streams

Question

Hello All,
I have setup a schema level streams replication using local capture process. I can capture all the DML changes on tables but have some issues capturing DDL. Even though streams are used for sharing data at different or within a database I was wondering if we can replicate the changes made to the objects like views, procedures, functions and triggers at the source database. I am not able to replicate the changes made to the views in my setup.
Also, when I do a "select source_database,source_object_type,instantiation_scn from dba_apply_instantiated_objects" under the column 'object_type' I just see the TABLE in all the rows selected.
Thanks,
Sunny boy

Answer 1

Hello
This could be a problem with your rules configured with capture,propagation or apply. Or might be a problem with your instantiation.
You can replicate Functions, Views, Procedure, Triggers etc using Streams Schema level replication or by configuring the rules.
Please note that the objects like Functions, Views, Procedure, Triggers etc will not appear in the DBA_APPLY_INSTANTIATED_OBJECTS view. The reason is because you do a schema level instantiation only the INSTANTIATION_SCN in DBA_APPLY_INSTANTIATED_SCHEMAS is accounted for these objects. At the same time tables would get recursively instantiated and you would see an entry in DBA_APPLY_INSTANTIATED_OBJECTS.
It works fine for me. Please see the below from my database (database is 10.2.0.3):
on capture site_
SQL> connect strmadmin/strmadmin
Connected.
SQL> select capture_name,rule_set_name,status from dba_capture;
CAPTURE_NAME RULE_SET_NAME STATUS
STREAMS_CAPTURE RULESET$_33 ENABLED
SQL> select rule_name from dba_rule_set_rules where rule_set_name='RULESET$_33';
RULE_NAME
TEST41
TEST40
SQL> set long 100000
SQL> select rule_condition from dba_rules where rule_name='TEST41';
RULE_CONDITION
((:ddl.get_object_owner() = 'TEST' or :ddl.get_base_table_owner() = 'TEST') and
:ddl.is_null_tag() = 'Y' and :ddl.get_source_database_name() = 'SOURCE.WORLD')
SQL> select rule_condition from dba_rules where rule_name='TEST40';
RULE_CONDITION
((:dml.get_object_owner() = 'TEST') and :dml.is_null_tag() = 'Y' and :dml.get_so
urce_database_name() = 'SOURCE.WORLD')
SQL> select * from global_name;
GLOBAL_NAME
SOURCE.WORLD
SQL> conn test/test
Connected.
SQL> select object_name,object_type,status from user_objects;
OBJECT_NAME OBJECT_TYPE STATUS
TEST_NEW_TABLE TABLE VALID
TEST_VIEW VIEW VALID
PRC1 PROCEDURE VALID
TRG1 TRIGGER VALID
FUN1 FUNCTION VALID
5 rows selected.
on apply site_
SQL> connect strmadmin/strmadmin
Connected.
SQL> col SOURCE_DATABASE for a22
SQL> select source_database,source_object_owner,source_object_name,source_object_type,instantiation_scn
2 from dba_apply_instantiated_objects;
SOURCE_DATABASE SOURCE_OBJ SOURCE_OBJECT_NAME SOURCE_OBJE INSTANTIATION_SCN
SOURCE.WORLD TEST TEST_NEW_TABLE TABLE 9886497863438
SQL> select SOURCE_DATABASE,SOURCE_SCHEMA,INSTANTIATION_SCN from
2 dba_apply_instantiated_schemas;
SOURCE_DATABASE SOURCE_SCHEMA INSTANTIATION_SCN
SOURCE.WORLD TEST 9886497863438
SQL> select * from global_name;
GLOBAL_NAME
TARGET.WORLD
SQL> conn test/test
Connected.
SQL> select object_name,object_type,status from user_objects;
OBJECT_NAME OBJECT_TYPE STATUS
TEST_VIEW VIEW VALID
PRC1 PROCEDURE VALID
TRG1 TRIGGER VALID
FUN1 FUNCTION VALID
TEST_NEW_TABLE TABLE VALID
5 rows selected.
These Functions, Views, Procedure, Trigger are created on the source and got replicated automatically to the target site TARGET.WORLD. And note that none of these objects are appearing in DBA_APPLY_INSTANTIATED_OBJECTS view.
I have used the above given rules for capture. For propagation I dont have a ruleset itself and for apply I have same rules as of the capture rules.
Please verify your environment and let me know if you need further help.
Thanks,
Rijesh