have a performance problem with a simple query, for example:
SELECT *
FROM CA_ADDRESS
WHERE address_k1 = 'L163'
I have an index created in column address_k1. CA_ADDRESS is a 3-4 Million Record table.
I need to improve the performance of the query. How I can improve it?
I huge table with million of rows and no of column more than 300.. is it possible to keep this table in some memory where oracle can access it fast as compare to disk memory.
View 8 Replies View RelatedDue to some business requirements a table field needs to change from date to timestamp in order to handle the millisecs.
1>When i alter the row , for a table with 150 million recs will there be a conversion. Is there a recommended way to convert the field. Mind you this field is used as a part of composite PK.
2> There is a interfacing application which connects and copies the data to its system and is using the date type, will that application be able to continue to work without any changes, if it does not care about the millisecs.
3> Will there be performance impact on an existing application that uses the date field to sort
4> Will DB need more space due to the change
trying to update a column in a table which has 3 columns of 16million rows from column in another table which has 1million rows, there is no relationship between the 2 tables.
Table A has 3 columns of 16million rows, the first two columns have 16million ID numbers, the 3rd colunm is currently NULL.
Table B has 1million Numbers, i need to somehow update column 3 in table A using the numbers in table B, it doesnt how many times each of the 1 million numbers are used but i dont want it to just update every row to the same value.
I have table desc xx_testName
Null Type
-------- -------- --------------
COL1 NOT NULL NVARCHAR2(100) COL2 NOT NULL NVARCHAR2(100) COL3 NOT NULL NVARCHAR2(100)
i am able to query select * from xx_test however if i query as select col1 from xx_test then it is giving error.
ORA-00904: "COL1": invalid identifier00904. 00000 - "%s: invalid identifier"*
Cause: *Action:Error at Line: 3,131 Column: 13
Let me know how to query NVARCHAR2 column and how can we put in WHERE condition ?
We have two tables, TableA and TableB that contain list of accounts and balances.The requirement is to compare the balances of accounts in both the tables, and if there is a difference, then record that difference with account number in another table.
Both TableA and TableB contain more than 10 million rows.What is the best way to do this task in PL/SQL? A join on TableA and TableB to know the differences has become very slow due to large volume.
I am trying to update a million rows in one table with the values from another tables.
Table being updated CI_ADJ_CHAR column CHAR_VAL_FK1
Table from which values will be used CK_ADJ columns (cx_id, ci_id)
The CI_ADJ_CHAR.CHAR_VAL_FK1 values match CK_ADJ.CX_ID and should be updated with the value CK_ADJ.CI_ID.
The CK_ADJ table has 1.3 million rows and both the columns have indexes defined. Table definitiuon mentioned below
The CI_ADJ_CHAR table has 14 million rows and will update 1 million rows and has an index on the ADJ_ID column but not on the CHAR_VAL_FK1 column.
I ran this following query and somehow i feel the results are wrong.
SQL> select to_char(starttime,'dd-mm-YYYY hh24:mi:ss') from report where dateofmonth between to_timestamp_tz('22-Apr-2013 12:00:00','dd-mm-YYYY hh24:mi:ss') and to_timestamp_tz ('23-Apr-2013 14:00:00','dd-mm-YYYY hh24:mi:ss');
TO_CHAR(STARTTIME,'
-------------------
23-04-2013 22:43:59
23-04-2013 13:43:37
SQL> select to_timestamp_tz(starttime,'dd-mm-YYYY hh24:mi:ss') from report where dateofmonth between to_timestamp_tz('22-Apr-2013 12:00:00','dd-mm-YYYY hh24:mi:ss') and to_timestamp_tz ('23-Apr-2013 14:00:00','dd-mm-YYYY hh24:mi:ss');
TO_TIMESTAMP_TZ(STARTTIME,'DD-MM-YYYYHH24:MI:SS')
---------------------------------------------------------------------------
23-APR-13 10.43.59 PM -07:00
23-APR-13 01.43.37 PM -07:00
I am not sure why the 10 PM time is coming up in the result.
We have to load 10 million rows in a table from another table based on the multiple joins. How much tablespace size we allocate to the table and for performance point of view how much should be the SGA size.
View 11 Replies View RelatedCan we search for a column name if we have some value with us, and we are not sure which column it belongs to.
View 3 Replies View RelatedI have a table emp where empid,employee name,job,salary are three columns.I need to retrieve empid,count of emp,emp name,emp salary of job = manager and total salary of all employees with grouping by job in one query.
View 13 Replies View RelatedI am trying to find a value in any column of any table ? How can i do that ? A value example would be 'FEDERAL' Using Oracle 11g and SQL Developer.
View 6 Replies View Relatedcan we make a search based on column , actually i have one requirement where the data is stored in column as comma seperated values like below
arif,123455,123456,77777
sait,123455,123456,66666
tomm,666666,123455,123456
I want to filter only 123455 and 123456 from this list, is it possible to get a range as i want to use it as report parameters , i can do it by using like operator as below
create table prd_mast ( prd_cd varchar2(12), prd_desc varchar2(3000));
insert into prd_mast values ('1','arif,123455,123456,77777');
insert into prd_mast values ('2','sait,123455,123456,66666');
[Code]....
in my databse i have column name as email_id
in this column email id of cutomers are stored but in some emaild contains space
i want to find out such email id
I have one table for eg. TB_Fruits.
In that i have one column FruitsName(Varchar)
In that column i am storing string in comma separated values.
Select FruitsName from tb_fruits;
Result: orange,banana,apple
Now the issue is suppose if i try to insert any of these fruits name again then it should not allow me to insert.
Suppose now if i try to insert ('grapes,banana')
or
('apple,grapes')
the orange,banana,apple can be in any position.
How to check if any of these names already exist or not in the column fruitsname?
I cannot use like or INstr function here. because the position is not fixed not even string.
in one of the data base some of the column values are TE. i wanted to serch in what are the tables this TE values are present. so m running the below function
CREATE OR REPLACE FUNCTION find_in_schema(val VARCHAR2)
RETURN VARCHAR2 IS
v_old_table user_tab_columns.table_name%TYPE;
v_where VARCHAR2(4000);
v_first_col BOOLEAN := TRUE;
[code]....
but v_where := v_where || ' or ' || r.column_name || ' like ''%' || val || '%''' is giving me numaric or value error when i run as select find_in_schema('@TL') from dual; so how can i go ahed with the serch ?
I have a column in a table say ename in emp table, which allows values with newlines and carriage return.
I need to find all the values (i.e ename's) which are having newline chars or carriage return.
I want to select the view names from text column in dba_views.
View 7 Replies View RelatedI have a requirement that i should list out all the table names which are all using timestamp datatype in a specified schema. Is there any way to find those table names by using any system tables.
View 1 Replies View Related(1.) We have an Oracle 10g DB.
(2.) We want to store PDFs/MS Word docs inside BLOB column in a table.
(3.) We need to show PDF/MS Word content to the user, without opening the PDFs/MS World like we normally do (i.e. Using PDV reader/ MS Word).
(4.) i.e. We need to use SQL statements and
(a.) Get all contents of the PDF/MS WORD doc.
(b.) Search for specific strings inside these docs in the BLOB columns.
I am using apex 4.1. I must hide phone number columns in my IR report, but at the same time the values of that columns should be available to search for using IR Search Field. is there a way to do this ?
if not, that means I have to :
1- Add a text filed P1_PHONE
2- edit my report query to something similar to
> Select * from Table where :P1_phone in (mobile1,mobile2) or :p1_phone is null
3- add button to refresh the report.
but the item P1_PHONE should be on the header of the Report region. is there a way to do this.
I am using theme 23
page template without sidebars
Report template : Reports Region.
how to put the item P1_PHONE on the tab of the page. Just similar to the Search item of in the Application Builder.
I used Region, Process by to search the report which appears as shown above. Then I use Choose Auditors column to select my Auditor and copy paste it into the report under To be Audited By col. Is there a way to automate the process. I am here using a tabular form in APEX. My main aim is to assign auditors based on Region, not equal to Processed by.
View 4 Replies View RelatedI have created a IR report and I set the default search column using the suggestion found in the thread URL....but how can I keep this default even after the research was done?Now it is resetted !
View 1 Replies View RelatedI'm having some issues with my NVarchar2 columns that I want to solve
My current NLS_CHARACTERSET is 'AL16UTF16', and therefore I can only create NVarchar2 columns with an maximum extension of 2000 bytes. But I do need a column with 4000 bytes length. How can I create an 4000 NVarchar2 column?
(I do not want to use a CLOB column...only a NVarchar2)
I have a table which have almost 90000 rows.
1. The datatype of some columns is NVARCHAR2. I want to change it to VARCHAR2 and NUMBER for some.
I have written a trigger & procedure to call a webservice from pl/sql procedure. Everything was working fine until I was told to use nchar & nvarchar2 instead of varchar2 as per requirement. Now I am not able to run the procedure and getting errorcode with return response from server.
I didn't changed the width of columns but only datatype. What precautions do I need to take in code while doing this and what could have caused the error only by converting the data type.
I want to know, Is NVARCHAR2 available in Oracle standard edition?
View 5 Replies View RelatedI have following table.
CREATE TABLE ORAFAQ
(
DPT NUMBER,
EMP NUMBER,
SAL NUMBER
)
[Code]....
DPTEMPSAL
1110
12100
131000
241500
25100
26500
27100
but i need data like
Dept
1
1 2 3 --3 columns show each employee
10 100 1000 --3 columns show salary below each employee
2
4 5 6 7
1500 100 500 100
I have two tables as follows:
TABLE_1
ID ENTRY_DATE VALUE
------- --------------- ----------
1 1-JUN-12 21
1 2-JUN-12 51
1 3-JUN-12 232
1 4-JUN-12 221
1 5-JUN-12 424
.
.
.
.
1 26-JUN-12 52
1 27-JUN-12 0
1 28-JUN-12 247
1 29-JUN-12 528
1 30-JUN-12 489
2 1-JUN-12
2 2-JUN-12
2 3-JUN-12
2 4-JUN-12
2 5-JUN-12
.
.
.
.
2 26-JUN-12
2 27-JUN-12
2 28-JUN-12
2 29-JUN-12
2 30-JUN-12
TABLE_2
ID DAY_1 DAY_2 DAY_3 DAY_4 DATE_5 .......... DAY_26 DAY_27 DAY_28 DAY_29 DAY_30
----- ---------- --------- --------- ---------- ---------- --------- --------- -------- -------- --------
1 21 51 232 221 424 52 0 247 528 489
2
There are millions of DISTINCT ID values in TABLE_1 and corresponding to each ID there are some values for all the days of a month. I need to insert these values in TABLE_2 in the above format.
How to convert station & date wise multiple rows to date wise column. I have a table TEST like this,
STN_Name Date State
DELHI1-Sep-201G
DELHI2-Sep-201B
DELHI3-Sep-201G
DELHI4-Sep-201G
DELHI5-Sep-201G
DELHI6-Sep-201M
DELHI7-Sep-201G
DELHI8-Sep-201G
DELHI9-Sep-201G
DELHI ......... ..
DELHI 30 Sep 2012 G
KOLKATA1-Sep-201G
KOLKATA2-Sep-201B
KOLKATA3-Sep-201B
KOLKATA4-Sep-201B
KOLKATA5-Sep-201G
KOLKATA6-Sep-201M
KOLKATA7-Sep-201G
KOLKATA8-Sep-201G
KOLKATA9-Sep-201B
I want output like this
STN_Name1-Sep-20122-Sep-20123-Sep-20124-Sep-20125-Sep-2012............Sep 2012
DELHI G B G G G M
KOLKATA G B B B G M