In this article I will discuss some SQL tuning guidelines that are simple but effective. SQL is the heart of the Oracle system. You can use many different SQL statements to attain the same result. It is often the case that only one statement will be the most efficient option in a given state of a ...
对于DBA来说,必须注意一个地方,异步IO需要在两个地方启用。 1、OS级别支持异步IO 2、oracle级别启用异步IO 另外:关注异步IO,asmlib和裸设备是有区别的。 Goal In this document we are going to explain how to check that asynchronous I/O (AIO) is working. AIO can be enabled in Oracle 9i 9.2 and higher. ...