Oracle database is not installed, configure plsqldeveloper

The oracle database is not installed locally, but I want to use plsqldeveloper to

configure plsqldeveloper

1: Download instantclient_11_2

2: Create a new network in the d:/instantclient_11_2 directory, create a new admin directory in the network directory, create a new tnsnames.ora in the admin directory, and then edit the content

3 : Add an environment variable named TNS_ADMIN whose value is the path where the tnsnames.ora file is located. For example, my local machine is: D:/instantclient_11_2/network/admin

environment variable NLS_LANG SIMPLIFIED CHINESE_CHINA.AL32UTF8
4: Configure PLSQLdeveloper
configuration tools->preferences->connection
Oracle Home
D:/instantclient_11_2
OCI library
D:/instantclient_11_2/oci.dll
5: To query the character set of the oracle server, you can log in to oracle with sqlplus, and then select userenv('language') from dual;