plsql客户端连接oracle
1. 关闭数据库服务器防火墙
查看防火墙状态
firewall-cmd --state
停止firewall
systemctl stop firewalld.service
禁止firewall开机启动
systemctl disable firewalld.service
2. 下载客户端Instant
https://www.oracle.com/cn/database/technologies/winsoft/instant-client-download.html
这里下载32位的
3. 配置
环境变量添加
ORACLE_HOME=D:softinstantclient_12_2
TNS_ADMIN=D:softinstantclient_12_2
在D:softinstantclient_12_2目录下创建tnsnames.ora文件
添加连接数据库的信息
ora19c =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.10)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ora19c)
)
)
4. 连接问题
解决办法：
[oracle@localhost admin]$ more sqlnet.ora
# sqlnet.ora Network Configuration File: /u01/app/oracle/product/19.3.0.0/db_1/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
SQLNET.ALLOWED_LOGON_VERSION_CLIENT=8
SQLNET.ALLOWED_LOGON_VERSION_SERVER=8