Thursday, December 28, 2017

ORA-01586: database must be mounted EXCLUSIVE and not open for this operation

As this message clearly explains, this error means that the operation you are going to perform that returned this error, needs database to be mounted EXCLUSIVELY - by only one instance. In my case, I was trying to drop a RAC database when I faced ORA-01586. I realized that the other instance of my RAC database is still up and it is needed that all the instances of a RAC database should be down before we can drop a database.

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