如果我尝试以 db 用户身份登录，则会收到此错误。如果 lsnrctl status 运行，我会收到以下错误。
DB 这些年来一直运行良好，但突然停止工作。
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=ABC.LOCAL)(PORT=1521)
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Production
Start Date 19-MAY-2014 12:18:17
Uptime 0 days 0 hr. 22 min. 51 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File D:\Oracle\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
Listener Log File d:\oracle\administrator\diag\tnslsnr\abc\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ABC.LOCAL)(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...
Service "devdb" has 1 instance(s).
Instance "devdb", status BLOCKED, has 1 handler(s) for this service...
Service "testdb" has 1 instance(s).
Instance "testdb", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
最佳答案
set ORACLE_SID=<YOUR_SID>
sqlplus "/as sysdba"
alter system disable restricted session;
或者也许
shutdown abort;
或者也许
lsnrctl stop
lsnrctl start
关于database - ORA-12528 : TNS Listener: all appropriate instances are blocking new connections. 实例 "CLRExtProc", 状态未知，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23743910/