一、情况说明1.背景情况1).用户采用DBA权限,DBA权限具有访问数据库所有用户数据的权限,不安全。2).表空间与用户没有对应关系,无法直接标识用户与表空间(根
一、情况说明1.背景情况1).用户采用DBA权限,DBA权限具有访问数据库所有用户数据的权限,,不安全。
2).表空间与用户没有对应关系,无法直接标识用户与表空间(根据自己情况)。
3).迁移涉及到表、索引、LOB对象的迁移。
注:如果涉及到LONGRAW字段类型表,还需要先建LONGRAW字段转成LOB对象。
本文只是找了情景环境,做一个记录过程,相对于操作系统中文件,文件夹的数据库的移动,数据库中也就是数据库对象进行的一些操作与管理。
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2.具体任务1.将gsjsso用户下的表全部移动到一个新建的表空间gsjsso。
2.将gsjsso用户从DBA权限降权为普通用户。
1)查看GSJSSO用户在JTTSSO空间中的LOB对象,说明:LOB是造成不能成功通过导入来改变空间原因。只能采用如下方式。
col TABLESPACE_NAME for a20; col DS.OWNER||'.'||DS.SEGMENT_NAME for a40; col DATA_TYPE for a15; select ds.tablespace_name,ds.owner||'.'||ds.segment_name,ds.segment_type, dtc.DATA_TYPE,dtc.COLUMN_NAME from dba_tab_columns dtc , dba_segments ds where dtc.TABLE_NAME = ds.segment_name and dtc.OWNER = ds.owner and ds.tablespace_name in ('JTTSSO') and DATA_TYPE like '%LOB';2)构建迁移LOB大对象SQL语句
select 'alter table '||dtc.owner||'.'||dtc.TABLE_NAME||' move lob('||dtc.COLUMN_NAME||') store as(tablespace '||du.default_tablespace||');' from dba_tab_columns dtc,dba_users du where dtc.OWNER = du.username and dtc.OWNER in('GSJSSO') and dtc.DATA_TYPE like '%LOB';1)复制迁移表SQL语句在SQLPLUS中执行。
alter table GSJSSO.ED_SEND_CONFIG move tablespace GSJSSO; alter table GSJSSO.ED_SEND_CONFIG_HOST move tablespace GSJSSO; alter table GSJSSO.ED_SEND_CONFIG_LOG move tablespace GSJSSO; alter table GSJSSO.ED_SEND_CONFIG_ORG move tablespace GSJSSO; alter table GSJSSO.ED_SEND_CONFIG_USER move tablespace GSJSSO; alter table GSJSSO.IDM_ROLE_MENU_ITEM move tablespace GSJSSO; alter table GSJSSO.IDM_SYS_ADMIN_ROLE move tablespace GSJSSO; alter table GSJSSO.IDM_SYS_ADMIN_USER move tablespace GSJSSO; alter table GSJSSO.IDM_SYS_CONFIG move tablespace GSJSSO; alter table GSJSSO.IDM_SYS_LOG move tablespace GSJSSO; alter table GSJSSO.IDM_SYS_MENU move tablespace GSJSSO; alter table GSJSSO.IDM_USER_ROLE move tablespace GSJSSO; alter table GSJSSO.NET_PLATFORM_ORGANIZE_T move tablespace GSJSSO; alter table GSJSSO.NET_PLATFORM_USER_T move tablespace GSJSSO; alter table GSJSSO.PORTAL_ADAPTER move tablespace GSJSSO; alter table GSJSSO.PORTAL_ADAPTER_RESOURCE move tablespace GSJSSO; alter table GSJSSO.PORTAL_ADAPTER_RESOURCE_PRAM move tablespace GSJSSO; alter table GSJSSO.PORTAL_SYS_ADMIN_USER move tablespace GSJSSO; alter table GSJSSO.PORTAL_SYS_CONSTANTS move tablespace GSJSSO; alter table GSJSSO.PORTAL_TEMPLATE_STYLE move tablespace GSJSSO; alter table GSJSSO.PORTAL_TEMPLATE_USER move tablespace GSJSSO; alter table GSJSSO.PORTAL_TEMPLATE_ZIP move tablespace GSJSSO; alter table GSJSSO.PORTAL_USER_HEAD_PICTURE move tablespace GSJSSO; alter table GSJSSO.PORTAL_USER_LOGIN move tablespace GSJSSO; alter table GSJSSO.SSO_HOST move tablespace GSJSSO; alter table GSJSSO.SSO_HOST_CONFIG move tablespace GSJSSO; alter table GSJSSO.SSO_ORG move tablespace GSJSSO; alter table GSJSSO.SSO_SESSION move tablespace GSJSSO; alter table GSJSSO.SSO_USER move tablespace GSJSSO; alter table GSJSSO.SYS_ADMIN_USER move tablespace GSJSSO; alter table GSJSSO.SYS_CONFIG move tablespace GSJSSO;2)复制迁移索引SQL语句在SQLPLUS中执行。
alter INDEX GSJSSO.PK_ED_SEND_CONFIG rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_ED_SEND_CONFIG_HOST rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_ED_SEND_CONFIG_LOG rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_ED_SEND_CONFIG_ORG rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_ED_SEND_CONFIG_USER rebuild tablespace GSJSSO; alter INDEX GSJSSO.ROLE_MENU rebuild tablespace GSJSSO; alter INDEX GSJSSO.ID_PK rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_IDM_SYS_ADMIN_USER rebuild tablespace GSJSSO; alter INDEX GSJSSO.MENUID_PK rebuild tablespace GSJSSO; alter INDEX GSJSSO.USER_ROLE rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005154 rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005157 rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005159 rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005161 rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005163 rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_PORTAL_SYS_ADMIN_USER rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_PORTAL_SYS_CONSTANTS rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_PORTAL_TEMPLATE_STYLE rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_PORTAL_TEMPLATE_USER rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005173 rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_PORTAL_USER_LOGIN rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005181 rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005189 rebuild tablespace GSJSSO; alter INDEX GSJSSO.SYS_C005193 rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_U rebuild tablespace GSJSSO; alter INDEX GSJSSO.PK_SYS_ADMIN_USER rebuild tablespace GSJSSO;
oracle asm指的是“自动存储管理”,是一种卷管理器,可自动管理磁盘组并提供有效的数据冗余功能;它是做为单独的Oracle实例实施和部署。asm的优势:1、配置简单、可最大化推动数据库合并的存储资源利用;2、支持BIGFILE文件等。

方法:1、利用“select*from user_indexes where table_name=表名”语句查询表中索引;2、利用“select*from all_indexes where table_name=表名”语句查询所有索引。

在Oracle中,可利用lsnrctl命令查询端口号,该命令是Oracle的监听命令;在启动、关闭或重启oracle监听器之前可使用该命令检查oracle监听器的状态,语法为“lsnrctl status”,结果PORT后的内容就是端口号。

在oracle中,可以利用“TO_SINGLE_BYTE(String)”将全角转换为半角;“TO_SINGLE_BYTE”函数可以将参数中所有多字节字符都替换为等价的单字节字符,只有当数据库字符集同时包含多字节和单字节字符的时候有效。

在oracle中,可以利用“drop sequence sequence名”来删除sequence;sequence是自动增加数字序列的意思,也就是序列号,序列号自动增加不能重置,因此需要利用drop sequence语句来删除序列。

在oracle中,可以利用“select ... From all_tab_columns where table_name=upper('表名') AND owner=upper('数据库登录用户名');”语句查询数据库表的数据类型。

方法:1、利用“LOWER(字段值)”将字段转为小写,或者利用“UPPER(字段值)”将字段转为大写;2、利用“REGEXP_LIKE(字符串,正则表达式,'i')”,当参数设置为“i”时,说明进行匹配不区分大小写。

方法:1、利用“alter system set sessions=修改后的数值 scope=spfile”语句修改session参数;2、修改参数之后利用“shutdown immediate – startup”语句重启服务器即可生效。


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