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By April C. Sims
This ebook is designed to hide the issues that amateur DBAs really fight with. This instruction manual covers a minimum volume of theoretical details earlier than displaying you the way to beat universal difficulties by utilizing real-life examples. It covers either Oracle 11g R1 and 11g R2 in examples, with fabric acceptable to all models of Oracle. This publication is for you when you are accountable for an Oracle database. it may be effortless to consider crushed. no matter if you're a unmarried worker or the DBA supervisor of a number of staff, even if you're taking over an current place or taking over a newly created one – this publication is designed to be a sanity payment. if you want information for migrating to 11g or imposing Oracle's greatest Availability structure, you can find this publication very important.
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You will need more background information than what is covered in this book to understand this section. The best sources of information will be the software vendor of your operating system, because there are small differences between the different versions and flavors of Unix. As with any code, you must test on a non-production system first, as inexperience may lead to unexpected results. Separating the configuration file Use the OS-provided default profile for environmental variables, but use a separate configuration file to set the $ORACLE_SID variable.
Expect the standards that you adopt to change gradually over time as technology improves and to reflect changes within your organization. Adapting to constant change You can have more than one ORACLE_HOME for every node, primarily for migration projects that will be spread over an extended period of time. There is an inherent risk in running multiple ORACLE_HOMES, in that you may mistakenly use the wrong ones. It is my personal recommendation that the ongoing risk is worth it when using the Step-Ordered Approach to Migrating, because it reduces the overall downtime (see Chapter 7).
Adapting to constant change You can have more than one ORACLE_HOME for every node, primarily for migration projects that will be spread over an extended period of time. There is an inherent risk in running multiple ORACLE_HOMES, in that you may mistakenly use the wrong ones. It is my personal recommendation that the ongoing risk is worth it when using the Step-Ordered Approach to Migrating, because it reduces the overall downtime (see Chapter 7). An ORACLE_HOME consists of installed binary files along with Oracle-supplied scripts.