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 ..
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 am rebuilding some UNUSABLE local index partitions on Oracle 8.1.7.4.0 (64bit) database . The platform is a HPUX machine.
The DDL of the partition table/indexes: ========================= CREATE TABLE TESTME ( INST_NO CHAR(3) NOT NULL, ACCT_NO CHAR(16) NOT NULL, REC_NO CHAR(9) NOT NULL, TRAN_TYPE CHAR(2) DEFAULT ' ', STAT CHAR(2) DEFAULT ' ', [code]...
I have created an non unique index lk_fein on lookup_fein( code,map_id,trash). When I check the explain plan it does a full table scan on lookup_fein. if I force it to use index by it does and the cost also decreases.
I�m Using Oracle 11.I have a table with 16 million rows and an index (let's call it the employee table with an index on department). I need to select all the employees whose departments are located in the uk. I achieve this by selecting all the department numbers from departments where location = 'UK' in a sub select then plug this into the main query as follows:
SELECT * FROM employees WHERE department IN (SELECT department from departments where location = 'UK');
It takes ages, 25 seconds or more, the explain plan shows its doing a full table scan on emplyees. I need it to use the index. The sub query is instant and returns only 5 rows. If I explicitly put the 5 numbers in the IN clause the query uses the index and executes in 0.04 seconds. See below:
SELECT * FROM employees WHERE department IN (1,2,3,4,5);
I need it to use the subquery once and then use the index on the main table.
Below query is degrading the performance of database. As we know that, without where clause, query do full table scan.Now, it is written to generate the sequence no.
SQL> explain plan for 2 SELECT NVL(MAX(P.NUM_SERIAL_NO), 0) + 1 FROM CNFGTR_IRDA_ENVELOPE_DTLS P 3 / Explained. SQL> select * from table(dbms_xplan.display()); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------------------------------- Plan hash value: 3345343365 ------------------------------------------------------------------------------------------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ------------------------------------------------------------------------------------------------
We have an application where delete statement is taking a long time ( 30-40 seconds).v$session_longops shows the sql statement is doing a full table scan. The statement is "delete tablename where column_name =:B1". The table is indexed and the indexed column is being used in the where clause. When I do an explain plan on the same statement with a value for column_name, it uses an index scan. The table has 9 million rows and the delete statement deletes 15 rows. Not sure why SQL when running through the application does not use index. The stats are current.
I have a query that seems to repeatedly call an index scan on a table for reasons I'm not sure about. Why it would be doing the index scan on totaldwellingarea in the dimensions table (DIMEN_PID_TDWELLAREA) repeatedly? This only seems to happen when I put on the range clause d.totaldwellingarea between scr.lowvalue and scr.highvalue.
I am using Oracle version 9.2.0.3.
select d.propertyid,d.totaldwellingarea, e.size_, scr.size_ from eqid e, dimensions d, brt_eval.size_code_ranges scr where e.style not in ('1','A','G','L') and e.size_ = '0' and d.propertyid = e.propertyid and e.style = scr.style and d.totaldwellingarea between scr.lowvalue and scr.highvalue;
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 ?
In the link below [URL] Thomas kyte has said, use the CBO and select /*+ FIRST_ROWS */ primary_key from table where rownum = 1; it'll read the index and stop at the first row. very fast on a big empty table (as the index is small and empty).
very fast on a big full table as the index is just read to find the first leaf node and then "stop".
It gives faster result if the primary key is used. But what if we have a table with around 1000 million rows and for the predicates there is a index range scan on the table.
What if we have a table say big_table (10000000000 rows) and the sql is something like
select /*+ first_rows */ 1 /* id, attribute_id*/ from big_table where attribute_name ='Gross Premium' and value ='10000' and version_date is null and rownum=1; --it's taking around 3 min
We observed that in such case there will be a range index scan for the index on the predicates. For a particular id there may be different values for attribute 'Gross Premium' and may have multiple versions.
How I would tune such a query where the purpose is to check if at least 1 records exists in the table for the input?
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.
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;
select (SELECT MIC.MICR_BANK_NAME FROM M_ECS_MICR_MST MIC WHERE MIC.PK_MICR_ID = BANK.ECS_MICR_CODE) AS BANKNAME, , (SELECT PAY.PAYMENTCODE FROM M_ECS_PAYMENT_MODE PAY WHERE TO_CHAR(PAY.ID) = BANK.ECS_FACTORING_HOUSE) AS [code].....
i have used composite index below column which used in the tbl_bank_statement table.like column name tbl_bank_ statement (policy_ no,ecs_ micr_code,ecs_factoring_house,ecs_mandate_status)
I am trying to update full table with row by row by using pl/sql blocks but I am getting "INVALID ROW ID" error. FYI. following is the screen shot from sql*plus.
SQL> declare 2 cursor csr is 3 select upc_code from pos.tbk_pos_fact_newslink_bk FOR UPDATE OF upc_code nowait; 4 5 begin 6 For row in csr [code]....
We have an old full export .dmp file from a 10g db and there are 451 records in one specific table that we need to export. Is it possible to IMP just the one specific table from a full dump? Or, another option, can we extract the records from the one table in the .dmp file into an xml file?
We have a large table of equally sized data blobs in our Oracle system and we'd like to select the whole table once into the memory. The corresponding tablespace is stored in SSD fast disks and is managed by ASM. However the achievable select speed (reading data into memory) of Oracle is not satisfactory. When we store the data in SSD disk using custom methods (e.g. in SQLite DB files) and load then into memory by multithreading (8 thread) techniques, the speed is more than 15 times that of Oracle.
Is there any way to optimize the oracle and ASM for increased full table select in our case. We tried FULL TABLE SCAN and PARALLEL hints and DB_FILE_MULTIBLOCK_READ_COUNT too, but with no success.
FYI:Our data blob is about 4.2kB and each DB_BLOCK_SIZE is 8kB. The ASM segment is configured for AUTO-ALLOCATE. The table is partitioned by HASH. Our oracle system is not RAC.
However when I run this I do not see the sys.aud$ in the log file. I know I can do a seperate export to specifically get the sys.aud$ table but is there any way to include it in with my full export?
We are using oracle 11.2.0.3.0 with 3 node rac. Earlier 3 scan vip and 3scan listener running on each node.But we found recently node1 running using 2vip and 2scanlistener and in node2 1vip and 1scanlisteners were running.but no longer running scan vip or scan listener in node 3. If i decided to reloacate the scan vip/Scan_listener to node3 from ndoe 1 using below command,does it cause any impact on my transcation?
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)?
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?
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.
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;
