There is a transaction table which becomes very slow after 3-4 months in spite on regular weekly analyze and index recreation.
But once we drop the constraint (PK) and recreate it again it becomes ok. The same doesn't happen even when we rebuild the index.
Let's say we have Table - A and we would like to replicate specific row transaction to Table B.
Here are the rows in *Table A*
Time: Lets say 15:00
A1 Just Updated @15:00
A2 Just inserted @15:01
A3
B1 - Daily Delete Row -i.e just deleted a while back - Non scheduled process --executed by application @15:02
B2 -
B3 - Daily Delete Row - i.e just deleted a while back -- Non Schduled process --executed by application @15:05
B4 - Just recently purged (As part of 180 Day purge ) - Scheduled process executed by operations team @15:10
B5 - Just recently purged (As part of 180 Day purge ) - Scheduled process executed by operations team @15:10
B6 -Just recently purged (As part of 180 Day purge ) - Scheduled process executed by operations team @15:10
Current Data in Table B (Before Replication) @15:00
A1 (without updates)
A3
B1
B2
B3
B4
B5
B6
Expected rows in Table B (via replication/snapshot/materialized view / or any other method)
*Replication at 15:30*
Table B - Read Only
Expected rows after replication-
A1 -- Newly updated details
A2 -- Newly inserted row
A3
B1 - Daily delete row is expected to be replicated
B2
B3 - Daily delete row is expected to be replicated
***Note row B4 is not expected to be replicated to table B.
Questions:
1) How can we get updates, inserts and daily deletes replicated while ignore large purges?
2) How can large purge changes be reflected in replicated tables as well without deleting daily deletes?
Let's consider such table that all rows fit into single block:
SQL> create table test as select rownum id, '$'||rownum name from dual connect by level <= 530;
Table created.
SQL> create index i_test on test(id);
Index created.
SQL>
SQL> begin
[code].....
why does approach with full scan take longer even if table occupies only one data block? PS. 11gR2
I have a huge table (about 60 gb) partition over range. The index on this table is global index created on 4 columns together. I have a query which is running very slowly. The explain plan is showing the use of this global index.Explain plan is not showing pstart and pend because the index is global.
View 6 Replies View RelatedI have approximately 1200 transaction to be updated to a master table. There are other columns in the master table but only one column is being updated. I would like to use sqlloader if possible or any other efficient means. Those 1200 record is stored in an excel spreadsheet. The col1 of the excel spreadsheet have to match col1 of the master table inorder for update col2 from the excel spreadsheet. Here is an example of the data. My operation system is HPUX and database is Oracle 10g.
Master table
col1 col2 col3 col 4
4238 susan 56e
5879 h698c rich 12g
7091 joyce 34b
0876 mike 25n
7501 k956b robert 87c
9498 angela 67r
3645 doris 92y
excel spreadsheet
col1 col2
9498 a784r
3645 a784r
4238 a784r
7091 a784r
0876 a784r
in oracle transaction table /temporary table /at the time of movement data insert
how to handle these table in merge no primary key
How to force an index if the table not using the index?
View 10 Replies View Relatedsql statement to query a transaction table that stores transactions of items bought from my organisation.The report i would like to generate is one that lists the items bought and this should be grouped month by month.
View 2 Replies View RelatedThe actual flow, works on this way:
The Procedure A extracts and filter some data from the DW, this data is stored on the Global Temporary Table. Another Procedure, named B, use the data from the Global Temporary Table and store it on a normal table using another procedure Named X that Merge the data from Global Temporary against the Normal Table (inserting if not exist and updating some fields if exist).
(X isn´t important on the new flow)
Now, i need to add some steps on the normal flow:
The Procedure A extracts and filter some data from the DW, this data is stored on the Global Temporary Table. Another Procedure, named B, use the data from the Global Temporary Table and store it on a normal table. Using the Data from Global Temporary Teble i must to Store some fields on another normal table, for this i use another Procedure named C that merge the data from Global Temporary Table against the data from normal table, and i must to commit at this point. X Merge the data from Global Temporary Table and the data from the Normal table con the procedure "C" against another Normal Table (inserting if not exist and updating if exist).
The issue that i´m expecting is that i can´t use "C" for merge and commit, because this truncate the data on the global temporary table. I can´t change the on commit delete rows option, because another procedures are using this Global Temporary Table on production.
Before you ask, i try using AUTONOMOUS_TRANSACTION on "C" and didn´t works because "C" can´t found data on the Global Temporary table ( i use a select count on "C" from Global Temporary), this is because The Autonomous_Transaction (i think). So, what i can do? I tried to trace the session Number on C and A and with the AT is the same ( so isn´t session change problem).
I need:Commit on the Procedure "C" without Truncating Global Temporary Table because i need this data for X.
How can we see the history of transactions on a table.
For eg, If I have a table called TEST123, I would like to know whatever SQLs fired on that table on today.
i want to insert some data in the transactions table on after insert trigger. Which trigger should i use on form level to accomplish this task.
View 4 Replies View RelatedWe deleted millions of records from a table.
1.Is it necessary to reorganize a table and index after the deletion of records from table ? Because i see some change in table size after table and index reorganization.
2.Will re org table and index improve the database performance ?
when i am Executing the following statement
SELECT DISTINCT EXPOSURE_REF FROM KBNAS.VW_EXPOSUREDETS_FOR_CCYREVAL
WHERE EXPOSURE_CURRENCY='THB' AND BASE_TXN_CCY='USD' AND BRANCH_CODE='7000'
AND (REVAL_STATUS='O') AND CONV_RATE<>'62' AND (EXPOSURE_AMOUNT<>0)
UNION
SELECT DISTINCT ED.EXPOSURE_REF FROM KBNAS.EXPOSURE_DETAILS ED,
[code].....
I have attached DDL for table EXPOSURE_DETAIL(PARTITION),LEDGERCARD,LEDGERCARDDETAILS, DDL for INDEX on those tables and DDL for Views..
Issue: we have created the Indexes but when we check the explain plain .. full table scan is going on..I have attached the explain plan ..
We need to load data from index by table to table.Below code is working fine.
declare
query varchar2(200);
Type l_emp is TABLE OF emp%rowtype INDEX BY Binary_Integer;
rec_1 l_emp;
begin
[Code]....
But data from source table and target table is dynamic.Ex:In above code, emp(source) and target table is emp_b are static. But for our scenario is depends on the source table , target would change as below.If source is emp then target is emp_bIf source is emp1 then target is emp_b1 ............
create or replace procedure p(source in varchar2, target in varchar2)
as
query varchar2(200);
source varchar2(200);
Type l_emp is TABLE OF emp%rowtype INDEX BY Binary_Integer;
rec_1 l_emp;
[Code]....
Its throwing. How to implement this scenario .
Am pasting the sample code here, which i got from some site..
DECLARE
TYPE population_type IS TABLE OF NUMBER INDEX BY VARCHAR2(64);
country_population population_type;
continent_population population_type;
howmany NUMBER;
[code]...
Here we are fetching indexes (like Antartica/Australia) from these two statements continent_population.FIRST or continent_population.LAST. If there are three or more indexes in the same table, how to fetch all of them?
I have tried using this, but doesnt work because loop variables are by default integers:
for i in continent_population.FIRST .. continent_population.LAST loop
dbms_output.put_line('i:'||i);
end loop;
how to partition and index my table for a special problem.
The table:
CREATE TABLE TEST (
ID NUMBER PRIMARY KEY,
U_VALUE NUMBER NOT NULL, -- Ranges from 0 - 30.000.000
O_VALUE NUMBER NOT NULL, -- Ranges from U_VALUE - 30.000.000
CREATE_TS TIMESTAMP DEFAULT SYSTIMESTAMP NOT NULL,
UPDATE_TS TIMESTAMP NOT NULL,
ITEM_TYPE NUMBER NOT NULL --<< Only 4 different values >>
);
As you can see, U_VALUE is ALWAYS lower than O_VALUE.I need to have the CREATE_TS in either main- or subpartition do drop the partitions after some time so i don,t have to use DELETE statements. The table has 360 millions rows.
The application has only 8 query which will always use a WHERE clause like this:
SELECT * FROM TEST
WHERE U_VALUE <= :1 AND O_VALUE => :2 AND ITEM_TYPE = :3
1. Is there any good technique how to create a good index for the queries (application will execute 120 queries per second)?
2. how to partition this table?
how to know weather procedure is working or not in a database ..
how to know index is created on table or not.
We are getting the below error on a piece of code that chas been functioning fine for over 4 years..
ORA-06502: PL/SQL: numeric or value error: NULL index table key value
ORA-06512: at "pd.pf33", line 148
The line it's pointing at is merely a FOR loop that opens a cursor (select query) and loops through the items.
FOR rec IN csr_cash
LOOP
END LOOP
This piece of code has been functioning fine for years.. and never got this kind of error on a for loop. Could it be something internal to Oracle/underlying memory issues?
Can there be an impact on performance if below two index exists on the same table:
t_idx(col1,col2, nvl(col7,col6));
t_idx1(col1,col2,nvl(col6,col7));
I have 2 similar tables. Same columns. Data inserted to second table from first for a condition and first table is truncated. Then data moved from second to first and second table truncated. Second table is to store data for a small period of time. First table has indexes. Do I need any index on second table?
The query on second table is always insert into second select * from first. Similarly insert into first select * from second.
I am on 11.2.0.3 Enterprise Edition. We are using the new feature "Composite Domain Index" for a Domain index on a very large table (>250.000.000 rows). It really works with mixed queries. We added two number columns using FILTER BY.We have lots of DML on this table. Therefore, we are executing synchronize and optimize once the week. The synch behaves pretty normal. But "optimize_index" takes a very very long time to complete. I have switsched on 'logging' for the optimize process. The $I table takes some time but is finished normally. But the optimization of the $S table (that is the table created for the CDI feature) is running over 12 hours now - and far from being finished. From the logfile, I can see that it optimizes 1000 rows every 20 minutes. Here is the output of the logfile:
Oracle Text, 11.2.0.3.0
14:33:05 06/26/12 begin logging
14:33:05 06/26/12 event
14:33:05 06/26/12 process $N for optimize: SEQDEV.GEN_GES_DESCRIPTION_CTX_I
14:33:16 06/26/12
14:33:16 06/26/12
[code]....
I haven't found a recommendation from Oracle not to use "optimize_index" for Domain Indexes with CDI. But in my case, it would be much faster just to drop and recreate the Domain Index in question.
1) how to find a primary key of a table in oracle, for example if I want to drop a index in table , how do I find what is the primary key in a table so that I can issue that command.
P/s: I don't have OEM installed so I must use SQL command
Example of dropping the index
ALTER TABLE table_name
drop CONSTRAINT constraint_name;
For example:
ALTER TABLE supplier
drop CONSTRAINT supplier_pk;
difference between the ways we create Reverse Key Index on the table.The two ways are as below:
1) CREATE INDEX <Index_Name> ON <Table_Name>(<Column_Name) REVERSE ;
2) CREATE INDEX <Index_Name> ON<Table_Name>(REVERSE(<Column_Name>)) ;
Which one is the appropraite one.
Are both going to act in the same way.
I created index in both ways one by one on the table.But when I fire the select statement against the same table, The explain plan doesn't show any cost and it shows the full table scan in both ways.The select statement used is as below...I want to compare the column with string RBO(i.e('RBO%') at the start.
SELECT *
FROM <Table_Name>
WHERE REVERSE (<Column_Name>) LIKE '%OBR' ;
The select statement is giving me the correct result. Only the explain plan is showing Full Table Scan.can we use this reverse with IN operator also in the same way by reversing the values.
why bulk insert is not possible in a table which has index?
View 9 Replies View RelatedI use Oracle 10.0.2.0.1.If I create a table with constraint key; after that I create an unique index key, I got an error. Does it mean when I create a table with constraint the unique index are automatically created and I could not create index key as I did as below?
create table test_const(ename varchar2(50) not null,
key_num number not null,
descr varchar2(100),
constraint constraint_test_const unique (ename, key_num));
create unique index test_const_idx on test_const
(
"ENAME","KEY_NUM"
)
tablespace tmp_data;
Error report: SQL Error: ORA-01408: such column list already indexed 01408. 00000 - "such column list already indexed" added [pre] tags by Sriram
Is it a possible to create table using clause below together with index ?
create table the_table
as
select col1, col2 from table2
I got procedure which create a table in the schema B. The procedure is called from schema A. But when I write into procedure query for create index
then I got a error:
ORA-01031: insufficient privileges when
...executing
Therefore I think about to create table together with index.
begin
B.proc.cre_table;
end;
i want to know the use of index for searching data in table...tell answer to my query with table example....
View 2 Replies View RelatedI have a table type object loaded (tto) with data and am using it as :
SELECT tto.B, tto.C
FROM TABLE(tto)
WHERE tto.A = <some value>;
This is working fine. BUT, can I also select the index of each element too along with other fields of each element ?
I am trying to disable the index i am getting the error like
ORA-02243: invalid ALTER INDEX or ALTER MATERIALIZED VIEW option
the table have partition. how to disable the index in partition table.
How to drop an index which has a constraint on the table?
while droping the index on the table wheather i should remove the
constraint or disable the constraint or without droping the
constraint