Database Not Available Error in Oracle


To fix this error:

(i) Click on Start > Run > Type 'cmd' and press enter

(ii) Now type 'svrmgrl' and press enter

(iii) Type 'connect' and press enter

(iv) Type Username 'internal' and password 'oracle' and press enter

(v) Type 'startup' and press enter

(vi) Now it will take about 1min to process and finally click 'edit' to close cmd

Now start PLSQL, you error is fixed.

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