1. Download the Oracle client; Configure the installation path to path, my first definition of an environment variable Oracle_client_path (this path is actually the official website of the ZIP package after the decompression path), and then attach this variable to the path behind, the benefit is later modified/ Upgrade path is simple and convenient, remember to configure Tns_admin, this is not the same as v11.x, the era default Tnsnames.ora is placed in the root directory of the installation path, but V12 is required through the Tns_ Admin environment variable to configure the Tnsnames.ora path; This is why I did not first detect the database configuration file;
How do I know? See Plsql's Manuel know. 2. Download Plsql Developer This idea should be as consistent as possible with the Oracle client, with the same number of bits (32/64bit); 3. About tnsnames.oraoracle_test= (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.x.y) (PORT = 1521)) (Connect_data = ( SERVER = dedicated) (service_name = ORCL))) If the configuration is OK, you can see the oracle_test in the drop-down box of database on the login page;
Use of Plsql developer v12.1
