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关于关键词 的检测结果,共 2970
unix_5359 | 2018-07-13 10:57:23 | 阅读(700) | 评论(0)
12、Which two types of Information can be found in the alert log?A) instance recovery detailsB) a record of all DDL statements performed by non-DBA usersC) a record of all actions performed by SYS and SYSTEMD) critical errors encountered by background processesE) values of all ...【阅读全文】
unix_5359 | 2018-07-13 10:12:02 | 阅读(670) | 评论(0)
11、Which three are true about UNDO data?A) It is used to roll back failed transactions.B) It is used to rewind a database by using FLASHBACK DATABASE.C) It is used to recover dropped tables by using FLASHBACK TABLE … TO BEFORE DROP.D) It is used to enable ROLLBACK statements to ...【阅读全文】
unix_5359 | 2018-07-12 10:13:47 | 阅读(870) | 评论(0)
10、Which two are true about consistent database backups?A) They can only be taken when a RECOVERY CATALOG is used.B) They can only be taken if the database Is in ARCHIVELOG mode.C) They can only be taken If shutdown NORMAL, TRANSACTIONAL, or IMMEDIATE shutdown has been performed and ...【阅读全文】
unix_5359 | 2018-07-12 09:46:55 | 阅读(550) | 评论(0)
9、Which is true about the Automatic Diagnostic Repository (ADR)?A) It includes diagnostic data for critical errors for each server and background process.B) Its location is always set by the ORACLE_BASE variable.C) It is used only if the DIAGNOSTIC_DEST parameter is manually configu...【阅读全文】
unix_5359 | 2018-07-11 09:37:06 | 阅读(600) | 评论(0)
7、Which is true about external tables?A) The ORACLE_DATAPUMP access driver can be used to write data to external tables.B) Segments are allocated for external tables.C) They do not support partitioning.D) They may have Indexes.E) DML operations may be performed on external ta...【阅读全文】
unix_5359 | 2018-07-10 14:17:56 | 阅读(600) | 评论(0)
6、You are installing Oracle Grid Infrastructure by using the Oracle Universal Installer (OUI).You select the "Install and Configure Grid Infrastructure for a Standalone Server" option.Which task is performed by OUI as part of this installation?A) creation and configuration of Enterp...【阅读全文】
hxl | 2018-05-11 08:59:57 | 阅读(0) | 评论(0)
因安全审计需要,在REPLICAT 中设置USERID and PASSWORD 的时候避免采用明文造成安全隐患,可以采用加密后的密码。具体方法如下:ggsci (localhost) 1> encrypt password mypasswd, ENCRYPTCKEY defaultUsing default key ...Encrypted password:  AACAAAAAAAAADAJHGCEFDEUGHDPIKDAlgorithm used:  BLOWF...【阅读全文】
dbwatcher | 2018-05-06 08:02:34 | 阅读(12140) | 评论(0)
博客文章除注明转载外,均为原创。转载请注明出处。本文链接地址:http://blog.chinaunix.net/uid-31396856-id-5784934.htmlOracle视图except SNAP_ID, and INSTANCE_NUMBER等字段dba_hist_active_sess_history视图的详细信息,请见下表列数据类型NULL...【阅读全文】
小崔Orcler | 2018-04-24 14:06:43 | 阅读(690) | 评论(0)
一、Oracle备份方式分类:Oracle有两类备份方式:(1)物理备份:是将实际组成数据库的操作系统文件从一处拷贝到另一处的备份过程,通常是从磁盘到磁带。物理备份又分为冷备份、热备份;   (2)逻辑备份:是利用SQL语言从数据库中抽取数据并存于二进制文件的过程。逻辑备份使用导入导出工具:EXPDP/IMPDP...【阅读全文】
hxl | 2018-03-14 09:22:03 | 阅读(0) | 评论(0)
默认情况下下,11G内存是自动管理,但是想要手工管理,想要将memory_target和memory_max_target设置为01.设置memory_target和memory_max_target设置为0alter system set memory_target=0 scope=spfile;alter system reset memory_max_target;SQL> show parameters memory;NAME      TYPE VALUE------...【阅读全文】
Moonecho | 2018-02-26 15:50:37 | 阅读(10120) | 评论(0)
Oracle 的 SQLCODE整理ORA-0:表示最近一次sql语句执行成功sqlcode=-1:表示最近一次sql语句执行失败ORA-00001: 违反唯一约束条件 (.) ORA-00017: 请求会话以设置跟踪事件 ORA-00018: 超出最大会话数 ORA-00019: 超出最大会话许可数 ORA-00020: 超出最大进程数...【阅读全文】
【Oracle】 RAC 增 SCAN
zhangzhengxing | 2018-01-16 21:32:10 | 阅读(830) | 评论(0)
刚开始ip有点紧张,我就只设置了一个SCAN,怕轮询不了,必须在加SCAN IP这样来增加: [root@esm1 ~]# /u01/grid/11g/bin/srvctl config scan SCAN name: racscan, Network: 1/192.168.116.0/255.255.255.0/eth0 SCAN VIP name: scan1, IP: /racscan/192.168.116.254我们看看scan监听的情况 [root@esm1 ~]# /u01/gr...【阅读全文】
Roobbin | 2018-01-02 18:33:12 | 阅读(3310) | 评论(0)
exp 用户/密码@orcl tables= file=e:\1111.dmp owner=所属用户 query=\" where条件语句\";【阅读全文】
Roobbin | 2017-12-29 11:37:39 | 阅读(2870) | 评论(0)
服务器重启之后,启动oracle数据库提示:第一行出现错误:ORA-01113:文件19需要介质恢复ORA-01110:数据文件 19 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\TS_SWFZ.DBF'解决办法:打开cmd窗口命令,连接至system用户,Microsoft Windows [版本 6.1.7601]版权所有 (c) 2009 Microsoft Corporation。保留所有权利。C:\Users\...【阅读全文】
Just_Du_IT | 2017-12-20 11:01:31 | 阅读(2010) | 评论(0)
oracle权限及角色管理【阅读全文】
canway01 | 2017-12-19 17:30:13 | 阅读(1780) | 评论(0)
【前言】Undo表空间是Oracle数据库尤为重要的表空间。其中存储的还原段用作支持Oracle数据库的回滚,一致性查询,闪回表,闪回查询的操作。那么Undo段具体的工作行为是怎么样的呢,我们来研究一下。一、回滚段块的使用:1.1 Seq序列值:步骤1:在每个回滚块的块头,有一个SEQ值,当事务延伸到新区时...【阅读全文】
Just_Du_IT | 2017-11-23 16:56:30 | 阅读(1380) | 评论(0)
表的创建,数据字典,表空间【阅读全文】
canway01 | 2017-11-23 14:26:40 | 阅读(2220) | 评论(0)
一       传统连接方式oracle RAC利用vip或者scan ip漂移实现数据库故障转移的高可用性,应用连接到数据库通常是连接vip(10g)或者scan ip(11g)并指定服务名为db_unique_name,连接会根据负载均衡自动分配到RAC集群的任一节点,某节点出现故障时vip漂移,实现应用连接透...【阅读全文】
gjhguest | 2017-11-17 15:27:24 | 阅读(0) | 评论(0)
1.查看实例状态(srvctl status)查询所有实例和服务的状态:srvctl status database -d racdb查询实例racdb1的状态srvctl status instance -d racdb -i racdb1查询实例racdb2的状态srvctl status instance -d racdb -i racdb2查询特定节点上应用程序的状态srvctl status nodeapps -n rac2查询特定节点...【阅读全文】
Just_Du_IT | 2017-11-08 15:10:36 | 阅读(1340) | 评论(0)
oracle 事务【阅读全文】