We are often faced with a situation when every DML change (Inserts/Updates/Deletes) made in Oracle/SQL tables must be audited. Banking Softwares and other similar applications have a strict requirement to maintain the audit trail...
In depth tutorial on Compound Triggers in Oracle 11g with examples. Also we see an example of using Compound Triggers in Auditing of some data.
Since Oracle 11g it is possible to pass CLOB argument in EXECUTE IMMEDIATE statements. This allows to overcome default 32k size limit of passing parameters.
Here’s a list of 40+ Useful Oracle queries that every Oracle developer must bookmark. These queries range from date manipulation, getting server info, get execution status, calculate database size etc. Date / Time related...
Oracle XMLTable: Learn how to parse XML in Oracle using XMLTable in 11g. Use XPath to query XML nodes in Oracle.
This tutorial guides us on how to pass Array objects from Java to stored procedures in Oracle and also, how to retrieve an array object in Java. All PLSQL arrays can not be called...
Oracle 11g introduced SKIP LOCKED clause to query the records from the table which are not locked in any other active session of the database. This looks quite similar to exclusive mode of locking. The select for...
With Oracle 9i, the Cost-Based Optimizer (CBO) is equipped with many useful features, one of them is “Index skip scan“. In previous releases a composite index could only be used if the first column,...
ROWNUM is a magic column in Oracle Database that gets many people into trouble. When you learn what it is and how it works, however, it can be very useful. I use it for...
A lot of developers might be confused about index selectivity while using %LIKE% operator. So please find below how index worked when you use LIKE operator. Problem Statement While optimizing high CPU consuming queries on 3rd...