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Category Archives for "Performance Tuning"

Function Based Indexes in PeopleSoft

Those who have not comes across performance issues in PeopleSoft, especially PeopleSoft on Oracle might not be aware of this thing called performance issues due to function based indexes. PeopleSoft has given a lot of headache to Oracle database engineers as well as customers when it comes to function based indexes. By definition, a function-based […]

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SQL Monitoring in OEM 12c

SQL Monitoring was instrumented and available for command line use in the first release of the Oracle Database 11g. The graphical user interface to monitor active running SQL made its debut in Grid Control 10.2.0.5 and Database Control 11.1.0.7. Basically, the data from the GV$ views, is aggregated and presented in a user-friendly interactive fashion […]

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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 […]

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Enabling 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:       […]

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Performance Tuning by Identifying Poor SQLs using v$

To a user, an application is never fast enough to satisfy his/her needs. Similarly, to a database administrator, an application is never fast enough to satisfy the needs of the user community. Perception and unreasonable expectations are definitely a cause. However, , insufficient hardware, poorly tuned application code, a poorly tuned database, or an architecture that doesn’t […]

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