Here loop will run commit statement after every record update so the time to update the record is higher than single commit record. If we can check the process and timing to execute the records or update the records in database it is approximately 3 mins and 58 seconds. Scenario 2 : Traditional way to update individual records and commit inside for loop It is taking around 2 mins and 42 seconds to complete the procedure and to update the records. If you can execute the specific PL SQL block. If you can check the first example where we are trying to update all records using for loop and then use commit statement. Scenario 1 : Traditional way to update individual records and commit after for loopįor cusrsor_1 in (select * from customer)Ĭustomer_no = cursor_1.customer_no, customer_name=cursor_1.customer_name, customer_product=c.customer_product where We need to execute all the ways and need to check the e performance of the different update statements. Types of updates :Ģ.Traditional update (Updating records individually)ģ.Bulk update using BULK COLLECT and FOR ALL statement The primary key named Customer_ID is in both tables. There is another table named Customer_Entry which also has 777777 records. There are millions of records in customer table but we are assuming that there are 999999 records in customer table. We are assuming that there are two tables – Customer information – Which is the name of customer visiting to specified E commerce website. These examples will give you clear idea about update process of oracle in detail. I would like to discuss the following ways in detail with real life industry examples. There are various methodologies which we are using to update bulk of records in oracle database. What are different ways to update bulk of records in oracle database?
In this article i would like to give the detailed idea about the way to update bulk of records in Oracle Database with multiple examples.I would like to give the examples of update bulk of records in oracle one one table named Customer and other table named Company.
In my previous article i have given the idea about how to update the records in sql.