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Защо слушателят на Oracle и услугата за база данни не работят?

Това решение за грешка е много просто, първо, нека разберем защо възниква тази грешка. Основно има две причини, които са:

1) Вашата база данни и име на услуга не са зададени правилно в средата на Oracle, трябва да са еднакви навсякъде, проверете стойностите на параметрите по-долу

-ORACLE_SID in oracle environment.
-SID_NAME in tnsnames.ora file.
-SERVICE_NAME in listener.ora file.

2) Името на хоста/IP адресът липсва, не е правилно или има правописна грешка, така че, моля, проверете по-долу.

-Check the IP ADDRESS in /etc/hosts file.
-It should be same in listener.ora and tnsnames.ora file
-And it should be able to ping from the local and remote server.

Сега вижте, че и аз се сблъсках със същия проблем и го реших:

[[email protected] Desktop]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Jul 12 22:52:29 2017

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area  970895360 bytes
Fixed Size          1340636 bytes
Variable Size         713034532 bytes
Database Buffers      251658240 bytes
Redo Buffers            4861952 bytes
Database mounted.
Database opened.
SQL> 
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[[email protected] Desktop]$ 
[[email protected] Desktop]$ lsnrctl

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 12-JUL-2017 22:54:51

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Welcome to LSNRCTL, type "help" for information.

LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ole1)(PORT=1521)))

TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused
LSNRCTL> LSNRCTL> start
Starting /home/oracle/app/oracle/product/11.2.0/dbhome_1//bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                12-JUL-2017 22:55:43
Uptime                    0 days 0 hr. 0 min. 23 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))
The listener supports no services
The command completed successfully
LSNRCTL> [[email protected] Desktop]$ 
[[email protected] Desktop]$ 
[[email protected] Desktop]$ echo $ORACLE_SID
orcl
[[email protected] Desktop]$ 
[[email protected] admin]$ cat tnsnames.ora 
# tnsnames.ora Network Configuration File: /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = ole1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

[[email protected] admin]$ 
[[email protected] admin]$ cat listener.ora 
# listener.ora Network Configuration File: /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = ole1 )(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = /home/oracle/app/oracle

[[email protected] admin]$ 
[[email protected] admin]$ cat /etc/hosts
127.0.0.1   localhost
::1         localhost
192.168.244.128 ole1
[[email protected] admin]$ 
[[email protected] ~]$ tnsping orcl

TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 12-JUL-2017 22:57:14

Copyright (c) 1997, 2009, Oracle.  All rights reserved.

Used parameter files:
/home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora


Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = ole1)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))
TNS-12541: TNS:no listener
[[email protected] ~]$
[[email protected] ~]$ lsnrctl

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 12-JUL-2017 23:01:48

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Welcome to LSNRCTL, type "help" for information.

LSNRCTL> 
LSNRCTL>
LSNRCTL> reload
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
The command completed successfully
LSNRCTL> 
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                12-JUL-2017 22:55:43
Uptime                    0 days 0 hr. 6 min. 37 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))
The listener supports no services
The command completed successfully
LSNRCTL> stop
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
The command completed successfully
LSNRCTL> start
Starting /home/oracle/app/oracle/product/11.2.0/dbhome_1//bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                12-JUL-2017 23:03:10
Uptime                    0 days 0 hr. 0 min. 21 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))
The listener supports no services
The command completed successfully
LSNRCTL> 

[[email protected] ~]$ 
[[email protected] ~]$ 
[[email protected] ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Wed Jul 12 23:04:37 2017

Copyright (c) 1982, 2009, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> select name from v$database;

NAME
---------
ORCL

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[[email protected] ~]$

[[email protected] admin]$ cat /etc/hosts
127.0.0.1   localhost
::1         localhost
192.168.244.128 ole1
[[email protected] admin]$ ping ole1
PING ole1 (192.168.244.128) 56(84) bytes of data.
^C
--- ole1 ping statistics ---
14 packets transmitted, 0 received, 100% packet loss, time 13710ms

[[email protected] admin]$ 

Забележка: Сега тук открих проблема в конфигурацията на IP адреса, че не пингува, така че направих някои промени в драйвера eth1 на моята ОС във VMware машина.

[[email protected] admin]$ ping ole1
PING ole1 (192.168.244.128) 56(84) bytes of data.
64 bytes from ole1 (192.168.244.128): icmp_seq=1 ttl=64 time=0.694 ms
64 bytes from ole1 (192.168.244.128): icmp_seq=2 ttl=64 time=0.187 ms
64 bytes from ole1 (192.168.244.128): icmp_seq=3 ttl=64 time=4.96 ms
64 bytes from ole1 (192.168.244.128): icmp_seq=4 ttl=64 time=0.121 ms
64 bytes from ole1 (192.168.244.128): icmp_seq=5 ttl=64 time=0.082 ms
64 bytes from ole1 (192.168.244.128): icmp_seq=6 ttl=64 time=0.166 ms
64 bytes from ole1 (192.168.244.128): icmp_seq=7 ttl=64 time=0.126 ms
^C
--- ole1 ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 6996ms
rtt min/avg/max/mdev = 0.082/0.905/4.963/1.668 ms
[[email protected] admin]$ 
[[email protected] admin]$ 
[[email protected] admin]$ lsnrctl 

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 12-JUL-2017 23:09:37

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Welcome to LSNRCTL, type "help" for information.

LSNRCTL> stop
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
The command completed successfully
LSNRCTL> 
LSNRCTL> 
LSNRCTL> start   
Starting /home/oracle/app/oracle/product/11.2.0/dbhome_1//bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                12-JUL-2017 23:09:45
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))
The listener supports no services
The command completed successfully
LSNRCTL> 
LSNRCTL> 
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                12-JUL-2017 23:09:45
Uptime                    0 days 0 hr. 2 min. 17 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/OLE1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ole1)(PORT=1521)))
Services Summary...
Service "orcl" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
[[email protected] admin]$ 
[[email protected] admin]$ 
[[email protected] admin]$ sqlplus scott/[email protected]

SQL*Plus: Release 11.2.0.1.0 Production on Thu Jul 13 00:15:48 2017

Copyright (c) 1982, 2009, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[[email protected] admin]$ 

Сега работи добре за мен, надявам се, че ще помогне.

Благодаря!



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