Cost of remote db table join

How expensive is remote db table join?
In performance tuning a sql statement, I have a query join a local table to two remote tables, it took 9 sec to return 6000+ rows. If I copy the two remote tables to local db, it took 700 msec. All joins/indexes are identical. The remote db is in the same box as the local db.

I am only asking for general opinion for experience on remote db table join. From explain plan, I already know it's doing next loop index join on the primary key on the two remote db tables. Only one coluum needed from each remote table. Does it look unusual expensive for 6000 primary key join to remote db tables?. 4 sec for each remote table, added up to 8 sec. The rest of processing is minimal.

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MV Incremental Refresh on join query of remote database tables

Hi,
I am trying to create a MV with incremental refresh option on a join query with 2 tables of remote database.
Created MV logs on 2 tables in the remote database.
DROP MATERIALIZED VIEW LOG ON emp;
CREATE MATERIALIZED VIEW LOG ON emp WITH ROWID;
DROP MATERIALIZED VIEW LOG ON dept;
CREATE MATERIALIZED VIEW LOG ON dept WITH ROWID;
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START WITH SYSDATE
NEXT SYSDATE1/(24*15)+
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WHERE e.deptno=d.deptno
AND e.sal>800;
Getting ORA-12052 error.
Can you please help me.
Thanks,
Anjan

Primary Key is on EMPNO for EMP table and DEPTNO for DEPT table.
Actually, I have been asked to do an feasibility test whether incremental refresh can be performed on MV with join query of 2 remote database tables.
I've tried with all combinations of ROWID and PRIMARY KEY, but getting different errors. From different links, I found that it's possible, but cannot create any successful testcase anyway.
It will be very much helpful if you can correct my example or tell me the restrictions in this case.
Thanks,
Anjan

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Hello Experts,
I am trying to create a query using table joins in SQ01 in CRM because I need a report that will give me all transactions for a selected Business Partner. I am unable to display any results when running my query. I have found other threads which give a list of possible tables to join together, but the fields used in the joins were not described.
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CRMD_ORDERADM_H
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BUT_000
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Reward points are available!
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David

David
The link with be the GUID.
CRMD_ORDERADM_H = Document Header Table
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CRMD_LINK = Lists various link GUIDs, to
access order Information
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CRMM_BUT_LNK0141 - for Sales Area data
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Regards
M

Context index can't be used in complicated multiple tables join?

hello
thank you for view this page.
i have a comlicated sql :
SELECT count(*)
from
((app_AssetBasicInfo left join app_AssetBasicInfoExt on
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(app_AssetCustominfo1 left join app_AssetCustominfoExt1 on
app_AssetCustominfo1.id=app_AssetCustominfoExt1.id) on
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Could you please post an explain plan? I'm not quite sure what is the issue.

How to create an explain plan with rowsource statistics for a complex query that include multiple table joins ?

1. How to create an explain plan with rowsource statistics for a complex query that include multiple table joins ?
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2. Does rowsource statistics gives some kind of understanding of Extended stats ?

You can get Row Source Statistics only *after* the SQL has been executed. An Explain Plan midway cannot give you row source statistics.
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Hi Curt,
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let
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    AO_LOTS = Source{[Schema="GEN",Item="MVIEW$_AO_LOTS"]}[Data],
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"WRWK_START_DATE", "WRWK_END_DATE"}),
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"WRWK_FISCAL_YEAR", "WRWK_WORK_WEEK_NO"}),
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"MC10XS3412CHFKR2")),
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in
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Could you please give me some hints why it needs so long to process?
Thanks.

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Raw material planned cost and qty in table MCKALKW

Hi,
Raw material planned cost and quantity in table MCKALKW is not equal to cost analysis in CO01 / CO02.
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Strange behaviour of view based on several tables join with union all

Dear fellows we r facing a strange problem we have a view based on several tables joined by union all ,when we issue an ordered query on date,rows returned are unusually different than they should be .
Is oracle has some special behaviour for view based on union all ?
I m using oracle 8.1.6 on windows 2000
Kashif Sohail

Did you ever solve this problem? I have two select statements based on 4 tables and 3 views using about 5 more tables. When I execute each select individually I get exactly what is expected. When I UNION ALL both selects together, I get "no rows returned", however when I UNION them I get exactly what is expected. I should get the same answer for both UNION ALL and UNION. The two select statements are identical, except for one column where I changed the constant to be different. Any thoughts?

3 Table Join with group by and order by clauses

I am porting from MySQL to Oracle 8i. I have a three Table Join in MySQL as follows:
select distinct TO_DAYS(l.listend)-TO_DAYS(NOW()) AS daysLeft, i.minbid, l.listend, i.itemid, i.itemtitle, l.listingid, l.lendstart, l.lendend, l.status, MAX(b.amount) AS curBid, COUNT(b.amount) AS numBids from TBL_ITEMS i, TBL_LISTING l LEFT JOIN TBL_BIDS b ON l.listingid=b.listingid where i.itemid = l.itemid AND l.status='1' AND (TO_DAYS(l.listend)-TO_DAYS(NOW()) >= 0) AND i.catcode LIKE'12__' GROUP BY listingid order by curBid DESC, daysLeft;
It performs an straight join on the first 2 tables (TBL_ITEMS and TBL_LISTING) and a LEFT JOIN between the previous result set and TBL_BIDS. TBL_BIDS uses a group by clause to obtain MAX and COUNT info. This final result set is the sorted (ORDER BY).
I have tried to reconstruct this type of call in Oracle and have failed. Several problems that I have notices: Oracle does not let me pull in additional columns when doing a GROUP BY clause.
(see below for my work around)
I have worked around the problem by creating a TABLE with the group by functionality and doing a straing 3 table join. (NOTE: I cannot create a view because use a LIKE function in the call... view dont have indexes). However, when I try to alias the column that returns DATE subtraction ("l.listend-TRUNC(SYSDATE) daysLeft" OR "l.listend-TRUNC(SYSDATE) dayLeft") I cannot use the LIKE statement.
Here is my question. How do I port the above 3-table MySQL call to Oracle. Why am I having these problems (is it the Oracle optimizer?) and how do I avaopid them in the future.
I really appreciate anyone's input. Thanks,
Inder
WORK AROUND:
FIRST STEP:
"create TABLE BIDSUM as
select l.listingid, COUNT(b.amount) numBids, MAX(b.amount) curBid from TBL_LISTING l, TBL_BIDS b where l.listingid=b.listingid(+) group by (l.listingid);"
NEXT STEP:
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE), l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12%';
THIS ALSO WORKS (no LIKE):
"select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode='12'";
BUT THIS DOES NOT (alias the DATE arimetic)
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12__';

I am porting from MySQL to Oracle 8i. I have a three Table Join in MySQL as follows:
select distinct TO_DAYS(l.listend)-TO_DAYS(NOW()) AS daysLeft, i.minbid, l.listend, i.itemid, i.itemtitle, l.listingid, l.lendstart, l.lendend, l.status, MAX(b.amount) AS curBid, COUNT(b.amount) AS numBids from TBL_ITEMS i, TBL_LISTING l LEFT JOIN TBL_BIDS b ON l.listingid=b.listingid where i.itemid = l.itemid AND l.status='1' AND (TO_DAYS(l.listend)-TO_DAYS(NOW()) >= 0) AND i.catcode LIKE'12__' GROUP BY listingid order by curBid DESC, daysLeft;
It performs an straight join on the first 2 tables (TBL_ITEMS and TBL_LISTING) and a LEFT JOIN between the previous result set and TBL_BIDS. TBL_BIDS uses a group by clause to obtain MAX and COUNT info. This final result set is the sorted (ORDER BY).
I have tried to reconstruct this type of call in Oracle and have failed. Several problems that I have notices: Oracle does not let me pull in additional columns when doing a GROUP BY clause.
(see below for my work around)
I have worked around the problem by creating a TABLE with the group by functionality and doing a straing 3 table join. (NOTE: I cannot create a view because use a LIKE function in the call... view dont have indexes). However, when I try to alias the column that returns DATE subtraction ("l.listend-TRUNC(SYSDATE) daysLeft" OR "l.listend-TRUNC(SYSDATE) dayLeft") I cannot use the LIKE statement.
Here is my question. How do I port the above 3-table MySQL call to Oracle. Why am I having these problems (is it the Oracle optimizer?) and how do I avaopid them in the future.
I really appreciate anyone's input. Thanks,
Inder
WORK AROUND:
FIRST STEP:
"create TABLE BIDSUM as
select l.listingid, COUNT(b.amount) numBids, MAX(b.amount) curBid from TBL_LISTING l, TBL_BIDS b where l.listingid=b.listingid(+) group by (l.listingid);"
NEXT STEP:
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE), l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12%';
THIS ALSO WORKS (no LIKE):
"select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode='12'";
BUT THIS DOES NOT (alias the DATE arimetic)
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12__';

Table join and Logical databasein a same query

Hi Experts,
I have an existing query which is created using table join. I now want to add a logical database in the same infoset.
Is it possible to add a logical database in the same infoset?
Regards,
Prakhar

Hi Prakhar,
If you see the below scren, you can use data source either Table join using basis table or Logical database.
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Regards,
Prasenjit

How to insert a record for tables joined

Hi,
first of all I've been learning Forms for few days.
I've created a simple form where I report the columns from two tables joining them.
Once I've entered a new list of values in the fields of the form, how can I insert them in the two tables? What I've done, but it doesn't work, is to set "Insert Procedure Name" of the data block = to my procedure compiled in "Program Units" hoping that once pushed the "Execute Query" button in the running form worked, but it didn't work.
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Hi,
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When there is a join you can not update all the fields.
Regards
Yoonas
Edited by: yoonus on Oct 3, 2012 1:04 AM

For display budgeted amount in cost center what is table in sap?

For display budgeted amount in cost center what is table in sap?

Hi,
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SQVI in a loop when creating or changing table join

Hello collegues,
When creating or changing a table join in the sqvi-transaction the transaction is hanging and won't continue. So I can't create any table joins anymore in the system (dev, qas and production-system).
Earlier I could create and change them without any problems.
Can anyone help me solving this problem?
Kind regards and thanks in advance,
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Dear All,
I am developing a query with table KEKO and KEPH for the material cost estimate. I need to run for several materials. CK13N is can be used for only one material.
I am getting Cost estimate No from the table KEKO and passing the value to KEPH for the cost values. but in KEPH table there are 40 cost fields are there from KST001 to KST040.
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Regards,
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Hi,
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Regards
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