Open and close the connection in oracle procedure

Here is the procedure I'm in I insert data into the table temp_soap_monitoring using the select statement. I have soap_monitoring table FONIC_RETAIL database where I want to take the data and insert into the table temp_soap_monitoring. I play the position of planner of all 5 minutes for this procedure so that I get always the latest data in soap_monitoring@fonic_retail table. The problem of this procedure is that it takes too much cost and the query execution time to perform this procedure. Whenever he tries to extract the data from db link and save my local database. I remember in Java, php, and other programming languages, we have method in order to open the db connection when we tried to extract data from db link and then once integration is complete, we can close the db connection. So the performance improves and also has no load on db link. In this method, we have to assign link db to retrieve the data. So I think is it possible to apply this logic in my oracle procedure. The question arises because at this moment I am hard code the link db, but now I have 3 db more links and I will not reproduce the same procedure by assigning diffferent db links.

PROCEDURE  "EXT_SOAP_MONITORING" AS

LAST_SM_ID Number := 0;
LAST_CAPT_DATE DATE;

BEGIN

SELECT LAST_TASK_ID INTO LAST_SM_ID FROM CAPTURING where DB_TABLE='TEMP_SOAP_MONITORING';

insert into TEMP_SOAP_MONITORING(ID,REQUEST_XML,RESPONSE_XML,WEB_SERVICE_NAME,WEB_METHOD_NAME,CREATE_DATE,ERROR_CODE,ERROR_MESSAGE)
select ID,REQUEST_XML,RESPONSE_XML,WEB_SERVICE_NAME,WEB_METHOD_NAME,CREATE_DATE,ERROR_CODE,ERROR_MESSAGE from
SOAP_MONITORING@FONIC_RETAIL WHERE WEB_SERVICE_NAME ='RatorWebShopService'  and WEB_METHOD_NAME = 'placeShopOrder' and ID > LAST_SM_ID order by ID desc;

update
CAPTURING set LAST_TASK_ID=
CASE WHEN ((SELECT MAX(ID) from TEMP_SOAP_MONITORING) IS NULL) AND (LAST_TASK_ID  IS NULL)  THEN (SELECT MAX(ID) from SOAP_MONITORING@FONIC_RETAIL)
WHEN (SELECT MAX(ID) from TEMP_SOAP_MONITORING) IS NULL THEN LAST_TASK_ID + 1
ELSE (SELECT MAX(ID) from TEMP_SOAP_MONITORING) END,
CAPTURING_DATE = CURRENT_TIMESTAMP, LAST_CAPTURED_DATE = LAST_CAPT_DATE where DB_TABLE='TEMP_SOAP_MONITORING';

END EXT_SOAP_MONITORING;

I have it here is the procedure which I insert data in

temp_soap_monitoring table by using the select statement. I have

soap_monitoring table of FONIC_RETAIL database where I want to take the data and insert into the table temp_soap_monitoring.

WHY? Why you are moving the data? Why not just use it table, is it already?

The problem of this procedure is that it takes too much cost and the query execution time to perform this procedure.

The solution is to FIND THE PROBLEM. Troubleshoot the code and find out where is the problem, if any.

Based SOLELY on what you have posted the solution might be to add just an appropriate index.

Whenever he tries to extract the data from db link and save my local

database. I remember in Java, php, and other programming languages, we

method to open the db connection when we tried to extract data of

DB link and then once integration is complete, we can close the db

connection.  So the performance improves and also has no load on db link.

What? The LAST thing you want to do is keep the closing and opening of the connections. I don't know how 'remember you' from Java or other languages. The main reasons pools of connections were invented to AVOID have to repeatedly open and close connections.

A db link not a NOT a "charge" - the "charge" is the query is made. If you write a poor query or have a poor data without the necessary index model, or have missing statistics, then you will get poor results.

In this method, we have to assign link db to retrieve the data. So I have
is it possible to apply this logic in my oracle procedure to belive. The
question arises because at the moment, I'm hardcode db link but now I
have more ties db 3 and I will not reproduce the same procedure by
assigning diffferent db links.

You can certainly write Java code to connect to each database with a direct connection. But all write code PL/SQL must include the database link. And the only way to avoid hard-coding the link is to keep the names of link in a table and use dynamic sql statements to build and run the query. This isn't what you want to do if you're looking for performance.

SELECT LAST_TASK_ID INTO LAST_SM_ID FROM CAPTURING where DB_TABLE='TEMP_SOAP_MONITORING';

For all we know which could be the WHOLE CAUSE of your problem. If there is no index on the table, you could do a full table to a table with lines scan 800 billion;

We have NO WAY of knowing since you haven't posted info. Please read the faq to find out how to post a request for tuning and the info you provide.

1. the query

2. the table and index DDL

3. the execution plan

4 RowCounts for tables and query predicates

5. the info on the stats: how you collected them and if they are up to date

update
CAPTURING set LAST_TASK_ID=
CASE WHEN ((SELECT MAX(ID) from TEMP_SOAP_MONITORING) IS NULL) AND (LAST_TASK_ID  IS NULL)  THEN (SELECT MAX(ID) from SOAP_MONITORING@FONIC_RETAIL)
WHEN (SELECT MAX(ID) from TEMP_SOAP_MONITORING) IS NULL THEN LAST_TASK_ID + 1
ELSE (SELECT MAX(ID) from TEMP_SOAP_MONITORING) END,
CAPTURING_DATE = CURRENT_TIMESTAMP, LAST_CAPTURED_DATE = LAST_CAPT_DATE where DB_TABLE='TEMP_SOAP_MONITORING';

My guess is that TERRIBLE method of trying to get a 'LAST ID' is what's causing ALL your problems of performance. This method will not scale, and it will NOT properly work in a multiuser environment.

You need create a good BATCH_CONTROL table that all processes use during the creation and execution of lots.

The MASTER of the process batch:

1 Gets a new BATCH_ID using a sequence

2 locks the current row in the table control and uses / change the value "last".

3 creates a new line in the control table for the new batch process

4. the line of control to date with the start time, end time, result State, County, etc. for the batch

Your likely PROBLEM of has NOTHING to do with the links of the db.

Tags: Database

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