1, restart the Listener, the remote client can not log in, only to start a new Oralce service to function properly, the analysis, with a Net Manager to increase the listening IP address of a server.
Execute net start listening service name
Then the remote client login successfully. As to why each time you restart the server, but also connected, no time to analyze why, if a friend has experience in this area, we can talk about.
2, database backup problems Pdb
expdp impdp online and say to add a service name, expdb userName / pwd @ service name ... But then, through tnsnames.ora study found that the service name is actually an explanation IP address, under the conditions do not configure the service name, can use:
expdb userName / pwd @ IP or domain name: port number / pdb service name, too, can be achieved. Export is the same.
3, impdp optimization:
4, the main use of command
lsnrctl start|stop
lsnrctl status
Reproduced in: https: //www.cnblogs.com/Yjianyong/p/7076248.html