打不开nc,提示信息是java.sql.SQLException:Listener refused the connec

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打不开nc,提示信息是java.sql.SQLException:Listener refused the connection wit
我安装的是oracle数据库。
具体的提示信息如下：java.sql.SQLException:Listener refused the connection with the following error:ORA—12505，TNS：Listener dose not currentlly kown of SID given in connect descriptor the connection description used by client was 127.0.0.1:1521:yxerp

连接字符串写错了哈,你是用java调用oracle还是c#调用Oracle,如果是java,需要导入包,如是是c#需要安装oracle的客户端.

打不开nc,提示信息是java.sql.SQLException:Listener refused the connec 具体信息如下：java.sql.SQLException:Listener refused the connection java.sql.SQLException: Listener refused the connection with java.sql.SQLException:Listener refused the connection with t java 连接oracle报错java.sql.SQLException: Listener refused the c java.sql.SQLException:The transaction is no longer active-st java.sql.SQLException:Couldn't perform the operation prepare 求 java java.sql.SQLException:The Network Adapter could not e java.sql.SQLException:ORA-00917:缺失逗号 java.sql.SQLException:ORA-28000:the account is locked?怎么解决 java.sql.SQLException:IO 错误:The Network Adapter could not es java.sql.SQLException:Io 异常:The Network Adapter could not es