![ORA-12557: TNS:protocol adapter not loadable" launching Controller, caused by Windows system variable ORACLE_HOME ORA-12557: TNS:protocol adapter not loadable" launching Controller, caused by Windows system variable ORACLE_HOME](https://www.ibm.com/support/pages/system/files/support/swg/cogtech.nsf/0/f4dbaf248df2e54385258155002dfd04/Symptom/0.84.gif)
ORA-12557: TNS:protocol adapter not loadable" launching Controller, caused by Windows system variable ORACLE_HOME
![SOLVED] ORA-12560: TNS : protocol adaptor error in Oracle 21c | Fix Protocol Adapter Error - YouTube SOLVED] ORA-12560: TNS : protocol adaptor error in Oracle 21c | Fix Protocol Adapter Error - YouTube](https://i.ytimg.com/vi/25u5hBYysnw/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLALMnR_b4H-T3XjyohFXRXkaqP3XA)
SOLVED] ORA-12560: TNS : protocol adaptor error in Oracle 21c | Fix Protocol Adapter Error - YouTube
![SOLVED] ORA-12560: TNS : protocol adaptor error in Oracle 21c | Fix Protocol Adapter Error - YouTube SOLVED] ORA-12560: TNS : protocol adaptor error in Oracle 21c | Fix Protocol Adapter Error - YouTube](https://i.ytimg.com/vi/Cl_S74k3H8k/maxresdefault.jpg)
SOLVED] ORA-12560: TNS : protocol adaptor error in Oracle 21c | Fix Protocol Adapter Error - YouTube
![oracle数据库免密登录失败sqlplus / as sysdba ERROR: ORA-12560: TNS:protocol adapter error Enter user-name:_sqlplus / as sysdba user-name-CSDN博客 oracle数据库免密登录失败sqlplus / as sysdba ERROR: ORA-12560: TNS:protocol adapter error Enter user-name:_sqlplus / as sysdba user-name-CSDN博客](https://img-blog.csdnimg.cn/2019102223001110.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4NzYwMDY5,size_16,color_FFFFFF,t_70)