A Quick Guide to Stored Procedures in Oracle Database and SQL

Stored procedures are increasing in popularity in Oracle Database and SQL Server because of quicker execution. Earlier, application code mostly resided in external programs. However, its shift toward database engine interiors compels database professionals to keep their memory requirements in mind.

This is as necessary as planning for times when the code related to database access will be present within the database. They also need to know how they can handle these stored procedures to maintain ideal database performance. We will look at some of these methods and the advantages of using stored procedures and triggers in the Oracle database.

Perks of Stored Procedures for Oracle Database Performance Tuning

Until recently, a majority of Oracle databases had limited code within their stored procedures. This shift in trends is because of the various advantages that come with placing larger amounts of code, such as the following:

Performance Improvement – Using more stored procedures means you don’t require Oracle database performance tuning as much. That’s because each of these only has to load once into the shared pool. Executing them, therefore, is quicker than running external code.

Code Segregation – The stored procedures have all the SQL codes which turn all the application programs into calls for those procedures. This is an improvement in the data retrieval process because changing databases gets simpler.

Therefore, one advantage you get through stored procedures is the ability to transfer large amounts of SQL code to the data dictionary. Doing this will enable you to perform SQL tuning without involving the application layer.

Group Data Easily – You can gather relational tables with data that shares certain behaviour before looking for Oracle performance tuning tips. Simply use Oracle stored procedures as methods, along with suitable naming conventions. For example, link the behaviour of the table data to the table name in the form of prefixes.

The users may then request the data dictionary to display all the traits connected to one table. This makes it more convenient to recognise and reuse code with the help of stored procedures.

Other Reasons Behind the Increasing Popularity of Stored Procedures

There are plenty of other reasons ‌stored procedures and triggers take less time in comparison with conventional code. One of these has something to do with SGA caching in Oracle database and SQL.

Once the shared pool within the SGA gets a hold of a stored procedure, it keeps it there until the procedure gets paged out from the memory. The SGA mostly does this to create space for other stored procedures. The paging out process takes place based on a Least Recently Used or LRU algorithm.

Two parameters help determine the amount of space that Oracle uses on startup. These are the Cache Size and the Shared Pool Size parameters. They also help users check how much storage space is available for various tasks. These include caching SQL code, data blocks, and stored procedures.

Stored procedures will run extremely fast once you load them into the shared pool’s RAM – as long as you can avoid pool thrashing. This is important because several procedures compete for varying quantities of memory in the shared pool.