Toad for oracle登陸虛擬機器linux系統出現ORA-12541登陸問題？

介紹下平臺：

linux 2.6.32 + oracle 12c平臺

背景：

系統一切正常，關閉虛擬機器後，重新開機登陸系統，開啟Toad for oracle軟體登陸資料庫後出現ora-12541。

如圖：

CRT遠端登陸：

[[email protected] ~]$ ps -ef |grep ora_
oracle    2861  2750  0 00:44 pts/0    00:00:00 grep ora_
[[email protected] ~]$ 

發現沒有資料庫程序

開始檢查監聽

[[email protected]

~]$ lsnrctl status


LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 25-JUL-2016 00:45:00


Copyright (c) 1991, 2014, Oracle.  All rights reserved.


Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=pxmwxxj)(PORT=1521)))
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=IPC)(KEY=EXTPROC1521)))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 2: No such file or directory

原因找到了，開始起監聽：

[[email protected] ~]$ lsnrctl start


LSNRCTL for Linux: Version 12.1.0.2.0 - Production on 25-JUL-2016 00:47:47


Copyright (c) 1991, 2014, Oracle.  All rights reserved.


Starting /home/oracle/app/oracle/product/12.1.0/dbhome_1/bin/tnslsnr: please wait...


TNSLSNR for Linux: Version 12.1.0.2.0 - Production
System parameter file is /home/oracle/app/oracle/product/12.1.0/dbhome_1/network/admin/listener.ora
Log messages written to /home/oracle/app/diag/tnslsnr/pxmwxxj/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=pxmwxxj)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))


Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=pxmwxxj)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 12.1.0.2.0 - Production
Start Date                25-JUL-2016 00:47:47
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/12.1.0/dbhome_1/network/admin/listener.ora
Listener Log File         /home/oracle/app/diag/tnslsnr/pxmwxxj/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=pxmwxxj)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Services Summary...
Service "target" has 1 instance(s).
  Instance "strmtarget", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

檢查程序：

[[email protected] ~]$ ps -ef |grep ora_
oracle    2903  2750  0 00:48 pts/0    00:00:00 grep ora_

檢查資料庫有沒起來：

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


SQL*Plus: Release 12.1.0.2.0 Production on Mon Jul 25 00:49:25 2016


Copyright (c) 1982, 2014, Oracle.  All rights reserved.


Connected to an idle instance.     //空例項

起庫操作：

SQL> startup
ORACLE instance started.


Total System Global Area  520093696 bytes
Fixed Size                  2926272 bytes
Variable Size             440404288 bytes
Database Buffers           71303168 bytes
Redo Buffers                5459968 bytes
Database mounted.
Database opened.

檢查程序：

[[email protected] ~]$ ps -ef |grep ora_
oracle    2925     1  0 00:50 ?        00:00:00 ora_pmon_orcl
oracle    2927     1  0 00:50 ?        00:00:00 ora_psp0_orcl
oracle    2929     1  2 00:50 ?        00:00:03 ora_vktm_orcl
oracle    2933     1  0 00:50 ?        00:00:00 ora_gen0_orcl
oracle    2935     1  0 00:50 ?        00:00:00 ora_mman_orcl
oracle    2939     1  0 00:50 ?        00:00:00 ora_diag_orcl
oracle    2941     1  0 00:50 ?        00:00:00 ora_dbrm_orcl
oracle    2943     1  0 00:50 ?        00:00:00 ora_vkrm_orcl
oracle    2945     1  0 00:50 ?        00:00:00 ora_dia0_orcl
oracle    2947     1  0 00:50 ?        00:00:00 ora_dbw0_orcl
oracle    2949     1  0 00:50 ?        00:00:00 ora_lgwr_orcl
oracle    2951     1  0 00:50 ?        00:00:00 ora_ckpt_orcl
oracle    2953     1  0 00:50 ?        00:00:00 ora_smon_orcl
oracle    2955     1  0 00:50 ?        00:00:00 ora_reco_orcl
oracle    2957     1  0 00:50 ?        00:00:00 ora_lreg_orcl
oracle    2959     1  0 00:50 ?        00:00:00 ora_pxmn_orcl
oracle    2961     1  1 00:50 ?        00:00:02 ora_mmon_orcl
oracle    2963     1  0 00:50 ?        00:00:00 ora_mmnl_orcl
oracle    2965     1  0 00:50 ?        00:00:00 ora_d000_orcl
oracle    2967     1  0 00:50 ?        00:00:00 ora_s000_orcl
oracle    2984     1  0 00:50 ?        00:00:00 ora_tmon_orcl
oracle    2986     1  0 00:50 ?        00:00:00 ora_arc0_orcl
oracle    2988     1  0 00:50 ?        00:00:00 ora_arc1_orcl
oracle    2990     1  0 00:50 ?        00:00:00 ora_arc2_orcl
oracle    2992     1  0 00:50 ?        00:00:00 ora_arc3_orcl
oracle    2994     1  0 00:50 ?        00:00:00 ora_tt00_orcl
oracle    2997     1  0 00:50 ?        00:00:00 ora_smco_orcl
oracle    2999     1  0 00:50 ?        00:00:00 ora_w000_orcl
oracle    3001     1  0 00:50 ?        00:00:00 ora_w001_orcl
oracle    3004     1  0 00:50 ?        00:00:00 ora_aqpc_orcl
oracle    3010     1  0 00:50 ?        00:00:00 ora_cjq0_orcl
oracle    3013     1  0 00:50 ?        00:00:00 ora_qm02_orcl
oracle    3017     1  0 00:50 ?        00:00:00 ora_q002_orcl
oracle    3019     1  0 00:50 ?        00:00:00 ora_q003_orcl
oracle    3021     1  0 00:50 ?        00:00:00 ora_q004_orcl
oracle    3207     1 40 00:51 ?        00:00:31 ora_j000_orcl
oracle    3254  3237  0 00:52 pts/0    00:00:00 grep ora_

程序有了，接下來應用Toad for oracle 重新登陸資料庫

如下：

這樣就OK！了