Question

使用

尝试在Java 8中使用jdbc连接到oracle 18c

“ Class.forName（” oracle.jdbc.driver.OracleDriver“）; cn = DriverManager.getConnection（“ jdbc：oracle：thin：@localhost：1521：XE”，“ PL”，“ PL”）; “

我有2个例外 “由以下原因引起：oracle.net.ns.NetException：侦听器拒绝连接并出现以下错误： ORA-12505，TNS：侦听器当前不知道连接描述符中给定的SID” “ java.sql.SQLException：侦听器拒绝连接并出现以下错误： ORA-12505，TNS：侦听器当前不知道连接描述符中给出的SID”

我尝试在CMD中执行“ lsnrctl状态”和“ lsnrctl服务” 并检查“ D：\ db_home \ dbhomeXE \ network \ admin \ tnsnames.ora”文件和“ D：\ db_home \ dbhomeXE \ network \ admin \ listener.ora”

tnsnames.ora

# tnsnames.ora Network Configuration File: D:\db_home\dbhomeXE\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.

XE =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = XE)
    )
  )

LISTENER_XE =
  (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))


ORACLR_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (CONNECT_DATA =
      (SID = CLRExtProc)
      (PRESENTATION = RO)
    )
  )

listener.ora

# listener.ora Network Configuration File: D:\db_home\dbhomeXE\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.

DEFAULT_SERVICE_LISTENER = XE

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = D:\db_home\dbhomeXE)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\db_home\dbhomeXE\bin\oraclr18.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

lsnrctl服务的o / p：


Copyright (c) 1991, 2018, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
    Handler(s):
      "DEDICATED" established:0 refused:0
         LOCAL SERVER
The command completed successfully```

o/p of lsnrctl status:
```LSNRCTL for 64-bit Windows: Version 18.0.0.0.0 - Production on 12-SEP-2019 01:34:23

Copyright (c) 1991, 2018, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 18.0.0.0.0 - Production
Start Date                11-SEP-2019 20:13:48
Uptime                    0 days 5 hr. 20 min. 39 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Default Service           XE
Listener Parameter File   D:\db_home\dbhomeXE\network\admin\listener.ora
Listener Log File         D:\db_home\diag\tnslsnr\DESKTOP-ARH7AVT\listener\alert\log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=DESKTOP-ARH7AVT)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully```

I'm getting 

java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

Caused by: oracle.net.ns.NetException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

oracle.net.ns.NetException：ORA-12505，TNS：listener当前不知道Oracle18c ExpressEdition的连接描述符中给出的SID

0 个答案: