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Don Burleson Blog 







PL/SQL far faster in Oracle10g

Oracle Tips by Burleson Consulting
Don Burleson

Oracle has touted that they have made an effort to optimize the PL/SQL language within Oracle, most notably the ability to compile PL/SQL starting with Oracle.

Oracle has reduced the code paths for PL/SQL for every release, making PL/SQL far faster then ever before.

Jared Still, a guru Oracle professional has recently created an easy test to prove the optimization of PL/SQL between Oracle versions.

Still created a timing test with interpreted PL/SQL that generated all prime numbers up to 100,000.  Here are his results:

Oracle8i:      4.1 seconds
Oracle:      1.9 seconds
Oracle10g:     1.4 seconds

While not representative of all possible PL/SQL operations, it confirms that PL/SQL may run twice as fast when migrating to Oracleand 25% faster when migrating from Oracle19 to Oracle10g.

If you have thousands of PL/SQL executions every minutes, these improvements can make a huge difference in server resource consumption.

Jared's code test is at

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