连接oracle数据库出现oracle ORA-12526: TNS: 监听程序: 所有适用例程都处于受限模式

jiawang

报错现象：
[oracle@localhost ~]$ expdp wj/wj@sztech directory=dpdata1 dumpfile=exp.dmp tables=student
Export: Release 11.2.0.4.0 - Production on Fri Dec 21 17:04:06 2018
Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

UDE-12526: operation generated ORACLE error 12526
ORA-12526: TNS:listener: all appropriate instances are in restricted mode



查看监听
[oracle@localhost ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 21-DEC-2018 16:59:31
Copyright (c) 1991, 2013, Oracle.  All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date                04-APR-2018 09:47:04
Uptime                    261 days 7 hr. 12 min. 27 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File         /u01/app/grid/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
  Instance "+ASM", status READY, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl", status RESTRICTED, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
  Instance "orcl", status RESTRICTED, has 1 handler(s) for this service...
Service "sztech" has 1 instance(s).
  Instance "sztech", status RESTRICTED, has 1 handler(s) for this service...
Service "sztechXDB" has 1 instance(s).
  Instance "sztech", status RESTRICTED, has 1 handler(s) for this service...
The command completed successfully


原来之前改字符集时执行了：ALTER SYSTEM ENABLE RESTRICTED SESSION；


解决办法：
[oracle@localhost ~]$ export ORACLE_SID=sztech
[oracle@localhost ~]$ sqlplus / as sysdba


SQL*Plus: Release 11.2.0.4.0 Production on Fri Dec 21 17:21:58 2018
Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options


SQL> ALTER SYSTEM DISABLE RESTRICTED SESSION;
System altered.


验证：
[oracle@localhost ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 21-DEC-2018 17:22:06
Copyright (c) 1991, 2013, Oracle.  All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date                04-APR-2018 09:47:04
Uptime                    261 days 7 hr. 35 min. 1 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File         /u01/app/grid/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
  Instance "+ASM", status READY, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl", status RESTRICTED, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
  Instance "orcl", status RESTRICTED, has 1 handler(s) for this service...
Service "sztech" has 1 instance(s).
  Instance "sztech", status READY, has 1 handler(s) for this service...
Service "sztechXDB" has 1 instance(s).
  Instance "sztech", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@localhost ~]$