RMAN-00554 RMAN-04005 ORA-12528
RMAN在使用recover catalog的情况下在nomount状态连接实例出现以下错误信息: RMAN-00554: initialization of internal recovery
RMAN在使用recover catalog的情况下在nomount状态连接实例出现以下错误信息:
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
下面我来模拟一下这种情况
1.将数据库置于nomount状态
SQL> startup nomount
Oracle instance started.
Total System Global Area 327155712 bytes
Fixed Size 1273516 bytes
Variable Size 138412372 bytes
Database Buffers 184549376 bytes
Redo Buffers 2920448 bytes
2.连接目标数据库
[oracle@oracle11g ~]$ rman target sys/zzh_2046@test catalog rman/rman@jy
Recovery Manager: Release 10.2.0.5.0 - Production on Sun Feb 1 23:01:08 2015
Copyright (c) 1982, 2007, Oracle. All rights reserved.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
3.检查监听状态
[oracle@oracle11g ~]$ lsnrctl status
LSNRCTL for Linux: Version 10.2.0.5.0 - Production on 01-FEB-2015 23:00:49
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.5.0 - Production
Start Date 01-FEB-2015 22:51:09
Uptime 0 days 0 hr. 9 min. 40 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Log File /u01/app/oracle/10.2.0/db/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle11g)(PORT=1521)))
Services Summary...
Service "test" has 1 instance(s).
Instance "test", status BLOCKED, has 1 handler(s) for this service...
Service "test_XPT" has 1 instance(s).
Instance "test", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
从上面的信息可以看到Instance "test",status BLOCKED,,对于ora-12528错误在MOS有一篇文章描述造成这种问题的原因:
Cause
When an instance is in restricted mode, PMON updates the listener with that information and blocks new connections from being established.
The lsnrctl services output will show the handler is blocked for new connections or lsnrctl status may show the instance is in RESTRICTED mode.
解决方法如下:
The (UR=A) clause for TNS connect strings was created in response to an enhancement request. This clause can be inserted into the "(CONNECT_DATA=" section of a TNS connect string and allow a privileged or administrative user to connect via the listener even when the service handler is blocking connections for non-privileged users.
Here's an example of a connect string configured with (UR=A):
PROD =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = myhost.oracle.com)(PORT = 1521)))
(CONNECT_DATA =
(UR=A)
(SERVICE_NAME = prod10ib.oracle.com)
)
)
Please note that the (UR=A) clause is intended to work with a dynamically registered handler so the use of SERVICE_NAME versus SID is required when using dynamic registration (i.e. handler exists in lsnrctl output but is BLOCKED). The use of SID in a TNS connect string may allow a connection if using a static handler in the listener.ora file under SID_DESC.
4.修改tns文件增加(UR=A)
[oracle@oracle11g admin]$ vi tnsnames.ora
test =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.2)(PORT = 1521))
)
(CONNECT_DATA =
(UR=A)
(SERVICE_NAME = test)
)
)
jy =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.56.11)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = jy)
)
)
5.再次连接目标数据库执行恢复
[oracle@oracle11g admin]$ rman target catalog
Recovery Manager: Release 10.2.0.5.0 - Production on Sun Feb 1 23:04:03 2015
Copyright (c) 1982, 2007, Oracle. All rights reserved.
connected to target database: test (not mounted)
connected to recovery catalog database
RMAN> restore controlfile;
Starting restore at 01-FEB-15
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 devtype=DISK

熱AI工具

Undresser.AI Undress
人工智慧驅動的應用程序,用於創建逼真的裸體照片

AI Clothes Remover
用於從照片中去除衣服的線上人工智慧工具。

Undress AI Tool
免費脫衣圖片

Clothoff.io
AI脫衣器

Video Face Swap
使用我們完全免費的人工智慧換臉工具,輕鬆在任何影片中換臉!

熱門文章

熱工具

記事本++7.3.1
好用且免費的程式碼編輯器

SublimeText3漢化版
中文版,非常好用

禪工作室 13.0.1
強大的PHP整合開發環境

Dreamweaver CS6
視覺化網頁開發工具

SublimeText3 Mac版
神級程式碼編輯軟體(SublimeText3)

全表掃描在MySQL中可能比使用索引更快,具體情況包括:1)數據量較小時;2)查詢返回大量數據時;3)索引列不具備高選擇性時;4)複雜查詢時。通過分析查詢計劃、優化索引、避免過度索引和定期維護表,可以在實際應用中做出最優選擇。

InnoDB的全文搜索功能非常强大,能够显著提高数据库查询效率和处理大量文本数据的能力。1)InnoDB通过倒排索引实现全文搜索,支持基本和高级搜索查询。2)使用MATCH和AGAINST关键字进行搜索,支持布尔模式和短语搜索。3)优化方法包括使用分词技术、定期重建索引和调整缓存大小,以提升性能和准确性。

是的,可以在 Windows 7 上安裝 MySQL,雖然微軟已停止支持 Windows 7,但 MySQL 仍兼容它。不過,安裝過程中需要注意以下幾點:下載適用於 Windows 的 MySQL 安裝程序。選擇合適的 MySQL 版本(社區版或企業版)。安裝過程中選擇適當的安裝目錄和字符集。設置 root 用戶密碼,並妥善保管。連接數據庫進行測試。注意 Windows 7 上的兼容性問題和安全性問題,建議升級到受支持的操作系統。

聚集索引和非聚集索引的區別在於:1.聚集索引將數據行存儲在索引結構中,適合按主鍵查詢和範圍查詢。 2.非聚集索引存儲索引鍵值和數據行的指針,適用於非主鍵列查詢。

MySQL是一個開源的關係型數據庫管理系統。 1)創建數據庫和表:使用CREATEDATABASE和CREATETABLE命令。 2)基本操作:INSERT、UPDATE、DELETE和SELECT。 3)高級操作:JOIN、子查詢和事務處理。 4)調試技巧:檢查語法、數據類型和權限。 5)優化建議:使用索引、避免SELECT*和使用事務。

MySQL支持四種索引類型:B-Tree、Hash、Full-text和Spatial。 1.B-Tree索引適用於等值查找、範圍查詢和排序。 2.Hash索引適用於等值查找,但不支持範圍查詢和排序。 3.Full-text索引用於全文搜索,適合處理大量文本數據。 4.Spatial索引用於地理空間數據查詢,適用於GIS應用。

MySQL 數據庫中,用戶和數據庫的關係通過權限和表定義。用戶擁有用戶名和密碼,用於訪問數據庫。權限通過 GRANT 命令授予,而表由 CREATE TABLE 命令創建。要建立用戶和數據庫之間的關係,需創建數據庫、創建用戶,然後授予權限。

MySQL 和 MariaDB 可以共存,但需要謹慎配置。關鍵在於為每個數據庫分配不同的端口號和數據目錄,並調整內存分配和緩存大小等參數。連接池、應用程序配置和版本差異也需要考慮,需要仔細測試和規劃以避免陷阱。在資源有限的情況下,同時運行兩個數據庫可能會導致性能問題。
