Oracle 11g For Dummies (For Dummies (Computer Tech)) by Chris Zeis, Chris Ruel, Michael Wessler

By Chris Zeis, Chris Ruel, Michael Wessler

Are you a pro process administrator charged with constructing an Oracle database? Or did you abruptly turn into a DBA by means of default? If database management with Oracle is a part of your activity, you’ll be completely happy to have Oracle 11g For Dummies on your cubicle. desk Of Contents creation half I: You Don’t need to visit Delphi to grasp Oracle bankruptcy 1: a practical creation to Oracle bankruptcy 2: knowing Oracle Database structure bankruptcy three: getting ready to enforce Oracle within the genuine international half II: imposing Oracle by yourself bankruptcy four: developing an Oracle Database bankruptcy five: Connecting to and utilizing an Oracle Database bankruptcy 6: talking the SQL Language bankruptcy 7: Populating the Database half III: taking good care of an Oracle Database bankruptcy eight: holding Your Oracle Database bankruptcy nine: preserving Your Oracle info bankruptcy 10: preserving the Database working bankruptcy eleven: Tuning an Oracle Database bankruptcy 12: Troubleshooting an Oracle Database bankruptcy thirteen: tracking and coping with with firm supervisor half IV: examining complex Oracle applied sciences bankruptcy 14: Flashing again and Replaying: complicated positive factors bankruptcy 15: utilizing High-Availability suggestions half V: The a part of Tens bankruptcy sixteen: most sensible Ten Oracle deploy Do’s bankruptcy 17: best Ten Database layout Do’s Appendix A: fast commence set up of Oracle 11g on Linux

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This is the most common Oracle configuration. It allows a server process to wait on you. If the resources can support dedicated connections, this also is the most responsive method. However, it can also use the most memory. Even if you’re not doing anything, that server process is waiting for you. Not that it’s a bad thing. Imagine, though, 5,000 users on the system sitting idle most of the time. If your applications can’t use connection pools (similar to shared server processes), your database probably won’t survive and perform adequately for more than a day.

As a matter of fact, of those 1,900, over 1,600 are hidden. Sorry if we scared you a little there. We just want you to have the whole picture. Whenever you start your database, the very first file read is the parameter file. It sets up all your memory and process settings and tells the instance where the control files are located. It also has information about your archiving status. The PFILEs and SPFILEs are under the directory where you installed the database software. This directory is called the ORACLE_HOME: ✓ Linux/UNIX: $ORACLE_HOME/dbs ✓ Windows: %ORACLE_HOME\database It should have a specific naming structure.

We commonly get this question: If my disks are mirrored at the hardware level, do I need more than one member on each group? After all, if a disk fails, I have another one right there to pick up the slack. Unfortunately, you get different answers depending on who you ask. Ask us, and we’ll recommend at least two members for each group: ✓ Oracle still recommends two members for each group as a best practice. ✓ Depending on how your hardware is set up, you may have the same disk controller writing to your disk mirrors.

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