SQL & PL/SQL :: Insert Taking Significantly Longer Than Select?
May 23, 2011
Recently upgraded from Oracle 10.2.04 to 11g with a few bumps on the road most of which I've been able to resolve, but there's one that continues to confuse me.
Pretty vanilla INSERT statement in which the SELECT portion on its own runs in about 2 to 5 seconds (all results returned) on a facility by facility basis. When I try to combine this with an INSERT statement it ends up running for 12+ minutes per facility. The explain plan looks good and I've even tried emptying the target table prior to running the INSERT.
I've gathered schema/table statistics to no avail. I also tried using it as a CREATE TABLE AS statement and it still takes the 12 minutes per facility.
I'm trying to select only codes from a column that are above a certain length. how would this be achieved? I've tried char_length(fieldname) > x in the where clause but i'm getting the error ORA-00904: "char_length" invalid identifier.
We are inserting data using JDBC (Java program) in Oracle 11gR2 DB and Timesten to oracle (using AWT cache group) . In reality insertion in oracle is faster than Timesten Cache DB.
Timesten version - TimesTen Release 11.2.1.7.0 (64 bit Linux/x86_64)
1. It is Client/Server Model. 2. Cpu has 4 core and we are using 3 core for insert the Data. 3. Perm and Temp size is big enough compare to Data Size 4. auto commit=0 5. durable commit=0 6. PassThrough=1 7. LogBufParallelism=3 8. LogPurge=1 9. LockWait = 0.1
I am working on oracle 11g...I have one normal insert proc
CREATE OR REPLACE PROCEDURE test2 AS BEGIN INSERT INTO first_table (citiversion, financialcollectionid, dataitemid, dataitemvalue, [code]....
I am processing 1 lakh rows.tell me the reason why bulk collect is taking more time. ? According to my knowledge it should take less time. do i need to check any parameter?
My oracle database version is 11.2.0.3.0 where i am having one schema in that schema i am having 3 same tables with same structure same data but with different name.
but problem is in first table when i perform select query it takes 5 sec, in another table it is taking 0 sec and in third table it is taking 10 sec.
select serialnumber from product where productid in (select /*+ full parallel(producttask 16) */productid from producttask where startedtimestamp > to_date('2013-07-04 00:00:00', 'YYYY-MM-DD HH24:MI:SS') and startedtimestamp < to_date('2013-07-05 00:00:00', 'YYYY-MM-DD HH24:MI:SS') and producttasktypeid in
Using rownum in PL/SQL can significantly reduce performance and throughput of queries.
For example,
CODEselect * from (select ... from ... join ... on ... join ... on ... left join ... on ... where ... group by ...) where rownum < 500
takes much more time on a heavy loaded db than
CODEselect Y.* from ( select X.*, rank() over(order by ...) rnk from (select ... from ... join ... on ... join ... on ... left join ... on ... where ... group by ...) X) Y where rnk < 500
I suspect it's because Oracle optimizer goals all_rows and first_rows.
I have a schema northwind which has tables and then i have another schema northwind_staging which has its own tables. CREATE TABLE "NORTHWIND"."CUSTOMERS" ( "CUSTOMERID" VARCHAR2(5 CHAR), "COMPANYNAME" VARCHAR2(40 CHAR) NOT NULL ENABLE, "CONTACTNAME" VARCHAR2(30 CHAR), "CONTACTTITLE" VARCHAR2(30 CHAR), "ADDRESS" VARCHAR2(60 CHAR),
[code]...
I created a procedure
CONNECT NORTHWIND_STAGING/NENAGH1; create or replace procedure INSERTCUSTOMERS_STAGING as begin INSERT INTO NORTHWIND_STAGING.customers_staging SELECT DISTINCT c.customerid, c.companyname,c.contactname,c.region, c.country FROM NORTHWIND.CUSTOMERS c; end; /
show errors This works fine when i ran my test scripts in SQL developer. I created a role Select on Northwind
We are doing a bulk select and insert (10,000 rows processed in each transaction). If one record fails, the entire transaction is rolled out. We need to fix this and re-run. the process is repeated unless all errors are fixed.
I have a table A on dev with definition as TAble A(address,name) and the same table on Prod is defined as Table A(name,address).
my question is Ihave one package in that am trying to insert into this table as follows:
INSERT INTO A SELECT b.name name, a.address address,
[Code]....
so the query works on Prod but fails on Dev because column order is different.
I have 2 solutions:
1. I can mention column names in insert line and modify the query but tomorro some body changes again the definition of table A I need to change the query, so do I have solution in oracle sql that can handle the column order without specifying the column names in insert line.
so tomorrow On prod column order and on Dev column order is different though my sql should successfully execute.
We are trying insert records from a select query in to temporary table, some of the records is missing in the temporary table. The select statement is having multiple joins and union all which it little complex query. In simple terms the script contains 2 part 1st Part Insert in to temporary table 2nd part Select query with multiple joins, inline sub queries, unions and group by classes and conditions Eg. If we execute select statement alone it returns some count for example => 60000 After inserting into the temp table, in temp table the count is around 42000 why is the difference?
It is simple bulk inserts... insert in to temp table select * from xxx. also, there is no commit in between. The problem is all the records populated by the select statement are not inserted in to temp table. some records are not inserted.
Also, we had some other observation. It only happens in its 2nd execution and not its first run. Hope there might be some cache problem Even, we also did not believe that. We are wondering. In TOAD, we tested however at times it happens. In application jar file, after "insert in to temp select * from xxx" we take the i. record count of temp table and ii. record count of "select * from xxx" separately but both doesn't match. Match only at 1st time.
Step# 2 manipulated the tables: Inserted 3 records in Table_C.
Then I created an Insert Trigger to Table_A with an insert statement into Table_B and a subquery to Table_C. Please see below:
CREATE OR REPLACE TRIGGER TABLE_A_TR after INSERT OR UPDATE OR DELETE ON TABLE_A FOR EACH ROW DECLARE [code]......
Step# 3 compiled the created trigger and I've successfully compiled it. Step# 4 Tested the trigger (TABLE_A_TR) using an insert statement to TABLE_A. Insert into TABLE_A values (1,'testa','testb')
I've successfully insert the values into TABLE_A however I've observed that the trigger didn't execute the insert statement because TABLE_B has an empty rows. I tried to manually execute the insert statement just to see if there's an issue in my insert statement but I've successfully populated the values into TABLE_B. So I'm wondering why the trigger didn't execute the insert statement.
I used bulk collect and for all statements to select and insert the data in temp table.The select SQl is returning one row. But its not inserting this row into temp table.Its not throwing any exceptions. Used ref cursor because the select statement is going for every cursor.
here modified the code and provided only one cursor.
Create Or Replace Procedure Sales_Hist_Update_Bkp Is Type Type_Name Is Record( Sku_Item_Key Ordm_Int.Dwi_Rtl_Sls_Retrn_Line_Bkp.Sku_Item_Key%Type, Locationno Ordm_Int.Dwi_Rtl_Sls_Retrn_Line_Bkp.Locationno%Type, Bsns_Unit_Key Ordm_Int.Dwi_Rtl_Sls_Retrn_Line_Bkp.Bsns_Unit_Key%Type, Act_Item_Cost_Amt Ordm_Int.Dwi_Rtl_Sls_Retrn_Line_Bkp.Item_Cost_Amt%Type, Act_Rglr_Unit_Price_Amt Ordm_Int.Dwi_Rtl_Sls_Retrn_Line_Bkp.Rglr_Unit_Price_Amt%Type, [code]...
I have 4 tables , Certain users need to (Select ,insert,delete) certain rows only based on nApplication id
All the tables have Application Id , Based on this application id user will (Select ,insert,delete)
I tried row level security DBMS_RLS.add_policy but it hangs every time when i query the data or when i try to drop the policy. Is there is any method to resolve this issue.
If only Row level security will solve this issue , give me some example
I am trying to insert 100K rows, I have written this proc using cursor. But it is saying anonymous block completed, and no rows are inserted. If I just run the select it returns the rows.Could if just insert into select would be fine or should I use cursor.
CREATE OR replace PROCEDURE Insert_data (l_from_date IN VARCHAR2, l_to_date IN VARCHAR2) IS lc_err_msg VARCHAR2 (2000); ln_count NUMBER := 0; CURSOR ins_d IS SELECT a.col1 AS url, b.col1 AS ref_url, COUNT (*) AS total_views [code]....
the moment my 11g database is connecting to a php web front end. this following procedure is the one I'm having trouble with.
CREATE OR REPLACE PROCEDURE "BSISSONS"."CREATE_EXCURSION" ( min_places IN excursion.min_places%TYPE, max_places IN excursion.max_places%TYPE, additional_charge IN excursion.additional_charge%TYPE,
[code]...
I can select into an output variable to return the value of the primary key of the newly inserted row back into the webpage, but i need to be able to 'select into' a temp variable to insert this value into another table on the same procedure. I get complie errors when i try to 'DECLARE' a variable after the 'AS' keyword
We are trying insert records from a select query into temporary table, some of the records is missing in the temporary table. The select statement is having multiple joins and union all which it little complex query. In simple terms the script contains 2 part 1st Part Insert in to temporary table 2nd part Select query with multiple joins, inline sub queries, unions and group by classes and conditions Eg. If we execute select statement alone it returns some count for example => 60000 After inserting into the temp table, in temp table the count is around 42000 why is the difference?
It is simple bulk inserts... insert in to temp table select * from xxx. also, there is no commit in between. The problem is all the records populated by the select statement are not inserted in to temp table. some records are not inserted.
Also, we had some other observation. It only happens in its 2nd execution and not its first run. Hope there might be some cache problem Even, we also did not believe that. We are wondering. In TOAD, we tested however at times it happens. In application jar file, after "insert in to temp select * from xxx" we take the i. record count of temp table and ii. record count of "select * from xxx" separately but both doesn't match. Match only at 1st time.
In a trigger(on update of a table t1) I am trying to write, I am doing an insert on t2 accessing ':new' values of the update on t1.
But in my Insert statement, I am having get one of the column values from another table. How can I write my insert statement in such a way as to insert values contained in ':new' pseudo columns and a select from another table. Below is my insert statement in the trigger : -------
IF (:old.GROUP_YELLOW <> :new.GROUP_YELLOW) THEN INSERT INTO TEST.W_THRESHOLD_LOG (THRESHOLD_LOG_WID, CHANGE_DATE, MEASURE_TYPE_WID, MEASURE_NAME, CUSTOMER_WID, CUSTOMER_NAME, USER_ID, CHANGED_ITEM, PREV_VALUE, NEW_VALUE) VALUES(TEST.W_THRESHOLD_LOG_SEQ.NEXTVAL, SYSDATE, :new.MEASURE_TYPE_WID, 'Rolling Stabilty' , :new.CUSTOMER_WID, 'Customer1', 'User1', 'GROUP_YELLOW', :old.GROUP_YELLOW , :new.GROUP_YELLOW); END IF; -------
In the above code if the hardcoded value 'Customer1' need to be picked from another table, i.e .
SELECT NAME FROM W_CUSTOMER_DIM WHERE CUSTOMER_WID = THRESHOLD.CUSTOMER_WID
how can I rewrite my query to the above value from the select into my insert statement..?
Is there any way to combine an identifier and select statement in PL/SQL when using the insert into command?
e.g.
DECLARE name := 'BOB'; BEGIN insert into mytable(NAME, SLOWEST_LAP, FASTEST_LAP) name, (select min(time), max(time) from lLAP_TIMES); END;
In the above statement I am trying to insert the identifier "name" (BOB) into MYTABLE.NAME, along with the result of the select query from the table LAP_TIMES ... min(time) into MYTABLE.SLOWEST_LAP, and, .... max(time) into MYTABLE.FASTEST_LAP.
If the above is possible in one statement how would I also combine an identifier, with two select statements into an "insert into" statement?
e.g.
name := 'BOB'; insert into mytable(NAME, SLOWEST_LAP, FASTEST_LAP, EVENT) name, (select min(time), max(time) from LAP_TIMES), (select race_event from MEET);
In the above example I am also trying to insert the result from MEET.RACE_EVENT into the column MYTABLE.EVENT
