By R.M. Menon
JDBC is the main commonplace API in Java to entry and control facts in a database. Oracle is likely one of the most well-liked and scalable databases on the earth. This booklet is a must have for any developer construction an program that employs JDBC on Oracle database. not like different JDBC books, this ebook has been written to counterpoint now not rehash the contents of Oracle JDBC documentation and the JDBC specification.
The booklet teaches you not only tips to write JDBC code, yet tips on how to write effective JDBC code in a step by step style. This publication doesn't think any previous wisdom of JDBC, even though it does imagine easy wisdom of SQL and PL/SQL. It covers JDBC with a spotlight on writing high-performing, scalable and safe purposes for Oracle 10g and 9i.
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Extra resources for Expert Oracle JDBC Programming
The first step when using RUNSTATS is to mark the beginning of the comparison by invoking the rs_start procedure. rs_start; PL/SQL procedure successfully completed. rs_middle; PL/SQL procedure successfully completed. 25%. In this book, we’ll focus on two numbers that runstats displays: • Difference in execution times: In the example, notice that the first query ran in 12 seconds (1199 hsecs and 1 hsec = 1/100 of a second) and the second query ran in 27 seconds. 62% of the time that the second query took.
Rs_start; PL/SQL procedure successfully completed. rs_middle; PL/SQL procedure successfully completed. 25%. In this book, we’ll focus on two numbers that runstats displays: • Difference in execution times: In the example, notice that the first query ran in 12 seconds (1199 hsecs and 1 hsec = 1/100 of a second) and the second query ran in 27 seconds. 62% of the time that the second query took. • Difference in latches consumed: Another number to focus on is the difference in latches consumed at the end of the output.
For example, the system tablespace contains all the objects for the SYS and SYSTEM schemas. A schema object that requires physical storage must belong to a tablespace. When a schema object is created, you may specify a tablespace in which to create the object or you may allow it to be created in the default tablespace for that user. The default tablespace for a user is defined when the user is initially created, and it may be altered after the user has been created if needed or desired. If the default tablespace for a user is altered after creation, any objects previously created for the user will not automatically move or migrate to the new default tablespace; only new objects created after the new default tablespace has been assigned will be created in that tablespace.
Expert Oracle JDBC Programming by R.M. Menon