SQL & PL/SQL :: Top N Analysis
Oct 6, 2013
Oracle8 Enterprise Edition Release 8.0.5.0.0 - Production
PL/SQL Release 8.0.5.0.0 - Production
CORE Version 4.0.5.0.0 - Production
TNS for 32-bit Windows: Version 8.0.5.0.0 - Production
NLSRTL Version 3.3.2.0.0 - Production
With reference to above oracle version. I am trying to retrieve top 300 donors from the table, below is my query.
Select * FROM
(select
distinct(d.contact_code),
c.contact_title||' '||c.contact_name,
c.contact_address,
c.contact_pcode,
ci.city_name,
cy.country_name,
[Code]...
ERROR at line 50: ORA-00907: missing right parenthesis
what is incorrect with this query. If I remove the main query then this query gives 76223 rows is correct, but I only want top 300 donors. How do I resolve this
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Aug 27, 2012
we have 1 server oracle and many clients. when client sends sql statement to server.How to Capture sql statement to analysis before it sent to server and execution.
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Mar 8, 2010
I have 2 tables that I am going to use. These are AUDIT_LOG, and AUDIT_PROPERTIES. AUDIT_LOG tells me that who made the change and at what time. AUDIT_PROPERTIES basically tells me that what the old value was and what the new value is.
These tables operate at the field level. For example, I have a module called BUG. Now a BUG (as a module entity or record) has several fields. There are around 25 fields. But I am interested in only 3 of these fields- these are BG_STATUS (Status), Priority (BG_PRIORITY) and Severity (BG_SEVERITY). This is my requirement:
Between a given period of time (let us say the month of January), give me the count of bugs that, 1) had an "Open" Status, 2) Were of "Medium" Severity, 3) And had a "Low" priority....each of these 3 conditions must be true simultaneously, means, that to be a "qualified" bug, the bug must be Open, Medium severity and low priority at the same given time within the month.
Below are the query and an image of the data looks like.
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Jan 27, 2011
I am looking for some tools for Performance analysis and optimization for Oracle. For now I looked over Spotlight, Ignite and Embarcadero DB Optimizer.
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Jun 22, 2013
One of our Job running long than usual time. I checked the wtait event for which its waiting. its PL/SQL Timer wait. But i noticed the total waits is 179 and timed out is also 179 for PL/SQL Timer. I checked that job that particular procedure calls dbms_lock.sleep in it. I want to know why this wait event is getting timed out ?
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Apr 28, 2011
The following error has occurred:
ORA-06550: line 26, column 30:
PL/SQL: ORA-06552: PL/SQL: Compilation unit analysis terminated
ORA-06553: PLS-320: the declaration of the type of this expression is incomplete or malformed
ORA-06550: line 7, column 6:
PL/SQL: SQL Statement ignored
I am getting the error when i run the below anonymous block. Historic_report_data has got plenty of columns and using only the columns that are in tb_Statement in the query. It is working fine if i use a table with same number of columns as tb_statement instead of historic_report_data.
DECLARE
v_cnt NUMBER:=0;
v_data_load_error EXCEPTION;
BEGIN
dbms_output.put_line('Reconciliation scripts');
dbms_output.put_line('Reconcile tb_bank_Account_month and report_hist_data');
[code]....
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Jul 21, 2010
I have two Oracle instances that are setup identically.When I run a query on one of them, it takes around 3 seconds, on the other it takes around 200 seconds.
I have looked at the explain plans, and it has shown me what I think is the problem. On one instance, it does a join on two tables, then runs the other filter/access predicates. On the other instance it runs the filter/access predicated first, then does the expensice join. The one that does the join first is the one that takes around 200 seconds. How to tell Oracle to make this join after runnning the other predicates?
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Nov 5, 2012
is there some open source or free tool which can graphical display V$ Views. Can TOAD do that in a good maner?
in UNIX there is the "sar" command, but a Java tool "ksar" for displaying the statistics in user friendly fashion.
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