plsql连接oracle
1.安装plsql
2.下载instanctclient,此项不用安装,只需解压即可(其中network\admin\tnsnames.ora自己创建的,主要是配置的oracle的ip和数据库)

tnsnames.ora的内容
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl)
)
)
3.配置环境变量,如下:
NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK
TNS_ADMIN=D:\oracleclient_12_2
4.配置plsql(Tools-》Preferences)


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