When you do the following, make sure that your database environment is properly installed.
Please don't ask me what the database is? What's the database for? If these two problems are not clear, do not continue to look down you do not understand.
My native Environment:
WINDOWS10 Family Chinese version
Database: Oracle 10g
Remote Connection tool: Plsql
First step: cmd--enter services.msc to open the database service
Step Two: Open the service and turn on all services with O.
Step three: Verify that the service is turned on successfully. Use the database administrator to log on to the system with the password set at the time of installation
Fourth step: If the following interface can appear, it is successful to the database.
OK, after the system login is successful, our next article continues to introduce other knowledge of the database.
Oracle Database Login