Apurva Tripathi
Author Archives: Apurva Tripathi
Apurva Tripathi
SQL Profiles in Oracle
Oracle Databases have an interesting concept called SQL profiles. A SQL profile is a set of information for the optimizer, which is specific to a SQL statement. Conceptually, a SQL profile is to a SQL statement what statistics are to a table or an index. The database can use this information to improve execution plans. […]
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PeopleSoft Performance Benchmarks
Performance is one aspect, which can never satisfy a person on. It is just not enough to keep improving the performance. Oracle understands this and regularly releases Benchmark papers on the same. Advantage of using these benchmarks is that the benchmarks show a level of acceptable performance and you can tune your application to meet […]
Continue readingHow to Find Oracle Hidden Parameters
Oracle has hundreds of initialization parameters, which are hidden and undocumented. Many savvy Oracle professionals are known to commonly adjust the hidden parameters to improve the overall performance of their systems. However, because these are “undocumented” parameters, most Oracle professionals rely on publications such as “Oracle Internals” to get insights into the proper setting for the […]
Continue readingEnabling Automated SQL Tuning in Oracle 11g
You need to identify if Automatic SQL Tuning job is enabled and regularly running. Use the following query to determine if any Automatic SQL Tuning jobs are enabled: SELECT client_name, status, consumer_group, window_group FROM dba_autotask_client ORDER BY client_name; If the Automatic SQL Tuning job is enabled, you will see something like this: […]
Continue readingHow to Identify User and SQLs in an Oracle database?
This is a very common scenario for a DBA to be in a situation where a DBA needs to find out one of the following: Which user is running which SQL? A particular SQL is being run by which user? A particular user is running which SQL? As it is evident from these questions – […]
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