Database Start-up phase

Oracle Database Startup steps:

The Oracle database is divided into four stages from shutdown to open, (1-1):

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Shutdown→nomount

This stage mainly participates in the object Spfile/pfile, creates an instance through the configuration of the parameter configuration file, allocates the memory, starts the background process.

Most of the problems in this phase are related to configuration files

This article is from the "linuxoracle" blog, make sure to keep this source http://onlinekof2001.blog.51cto.com/3106724/1590142

Database Start-up phase