short question, log demo:
Since I can't make a snapshot of a remote partition (this is really
what I wanted in the first place), I make a snapshot on the remote
machine first and then snapshot the remote snapshot. This works if
there is a PK on the remote original table, but not if I try to use
rowid. Below is the demo, can anyone suggest a workaround?
demo that it works with pk:
===========================
on remote machine:
------------------
SQL> CREATE TABLE EMP2
(EMPNO NUMBER(4) NOT NULL,
ENAME VARCHAR2(10)
)
PARTITION by range (empno)
(partition e6 values less than (6),
partition e12 values less than (12),
partition e18 values less than (maxvalue))
/
Table created.
SQL> alter table emp2 add constraint emp_pk primary key(empno);
Table altered.
(insert some data)
create snapshot emp2_snap as select * from emp2 partition (e6);
SQL> create snapshot emp2_snap as select * from emp2 partition (e6);
Materialized view created.
SQL> select * from emp2_snap;
EMPNO ENAME
---------- ----------
1 stellr
on local machine:
-----------------
SQL> create snapshot emp2_local_snap as select * from [EMAIL PROTECTED];
Materialized view created.
SQL> select * from emp2_local_snap;
EMPNO ENAME
---------- ----------
1 stellr
demo of failure without pk:
===========================
on remote machine:
------------------
CREATE TABLE EMP3
(EMPNO NUMBER(4) NOT NULL,
ENAME VARCHAR2(10)
)
PARTITION by range (empno)
(partition e6 values less than (6),
partition e12 values less than (12),
partition e18 values less than (maxvalue))
/
(insert some data)
SQL> create snapshot log on emp3 with rowid; (can't create the snap without this log)
Materialized view log created.
create snapshot emp3_e6_snap refresh fast WITH ROWID as select * from emp3 partition
(e6);
SQL> create snapshot emp3_e6_snap refresh fast WITH ROWID as select * from emp3
partition (e6);
Materialized view created.
SQL> select * from emp3_e6_snap;
EMPNO ENAME
---------- ----------
1 stellr
on local machine:
-----------------
SQL> select * from [EMAIL PROTECTED];
EMPNO ENAME
---------- ----------
1 stellr
SQL> create snapshot emp3_e6_local_snap refresh fast WITH ROWID as
select * from [EMAIL PROTECTED];
*
ERROR at line 2:
ORA-23413: table "STELLR"."EMP3_E6_SNAP" does not have a snapshot log
===============================================================
Ray Stell [EMAIL PROTECTED] (540) 231-4109 KE4TJC 28^D
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Author: Ray Stell
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