Sometimes You can get “NID-00121: Database should not be open ” error.
Details of error are as follows.
NID-00121: Database should not be open
This error is related with the database OPEN state. Shutdown Instance and startup mount mode.
shutdown immediate; startup mount;
and Run nid tool again using the following post.
Do you want to learn Oracle Database for Beginners, then read the following articles.
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