Oracle 19c:HOW TO UNLOCK HR USER in Oracle Database 19c by Sriguttula

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In this Oracle tutorial ,you will learn how to unlock HR user in Oracle database 19c by Sriguttula.Unlock the predefined HR database and start learning Oracle
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Hi, I am getting this error:
ERROR:
ORA-28000: The account is locked.

How can I fix this?

georgawaldron
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Hii anna
When I entered sqlplus it is showing sqlplus is not recognised as internal and external command. Please reply

pemmasanigayathri
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then i get this
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified

why?

abrar
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Got to 6:23 when I tried to enter lsnrctl reload it still gives me an unknown error and no such file or directory.

maksimkobylyuk