(the DESCRIPTION=(ADDRESS=(TCP) PROTOCOL=(HOST=John - djy) (1521) PORT=) (CONNECT_DATA=https://bbs.csdn.net/topics/(SID=former) (CID=(PROGRAM=E:/app/John - djy/product/11.2.0 dbhome_1/bin/emagent. Exe) (HOST=John - djy) (USER=SYSTEM))))
The VERSION INFORMATION:
TNS for 64 - bit Windows: Version 11.2.0.1.0 - Production
NT Windows NT TCP/IP Protocol Adapter for 64 - bit Windows: Version 11.2.0.1.0 - Production
Time: 27 - February - 2017 22:25:36
Tracing not turned on.
Tns error struct:
Ns main err code: 12564
TNS - 12564: TNS: connection refused
Ns secondary err code: 0
Nt main err code: 0
Nt secondary err code: 0
Nt OS err code: 0
CodePudding user response:
Should be your lisnter. Ora and tnsname. Ora configuration has a problem, under the screen