Unlock HR sample account in oracle,How to unlock HR account in Oracle by using SQL plus. and You will see connect in to SQL developer with has as below to configure:
Connnection Name: put anything about your connection.
Username : hr or sys
Password : depend on your Username
Role : default(for other account) sysdba(for user sys)
Hostname : localhost or take an ip address to submit or Your computer name without space.
SID : Your database name
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