ORA-12547 TNSlost contact error handling method
After the environment variables are copied, use sqlplus / as sysdba to log in to the Oracle database under the dsg user to verify that the environment variables are correct
Such as error: ORA-12547 TNSlost contact error handling method
1. Confirm whether the monitoring is started and whether the status is normal
2. Confirm whether there is a problem with the $ORACLE_HOME/bin/oracle file permissions
(under rac, you need to view the two files $ORACLE_HOME/bin/oracle and $GRID_HOME/bin/oracle),
The correct permissions are:
[oracle@normal adump]$ ll $ORACLE_HOME/bin/oracle
-rwsr-s--x 1 oracleoinstall 232399083 Aug 28 17:23/u01/app/oracle/product/11.2.0/db_1/bin/oracle
If the permissions are incorrect
chmod 6751$ORACLE_HOME/bin/oracle
If the authorization is unsuccessful, please use the absolute path authorization, or enter the directory and use chmod 6751 oracle authorization