Achivelog
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alter system set db_recovery_file_dest=‘F:\ORACLE\recovery_area‘ scope=both;
alter system set db_recovery_file_dest_size=100G scope=both;
Select big table
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select table_name,blocks*8192/1024/1024 size_m from user_tables order by size_m desc nulls last;
Create DB Link
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create public database link ORCL_AA
connect to username identified by "1234"
using ‘ORCL_CC‘;
Set Password Unlimited
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SELECT username, PROFILE FROM dba_users
where username in(‘SYS‘,‘SYSTEM‘,‘MGMT_VIEW‘,‘WDM_APP‘,‘SYSMAN‘,‘DBSNMP‘);
SELECT * FROM dba_profiles s
WHERE s.profile=‘DEFAULT‘ AND resource_name=‘PASSWORD_LIFE_TIME‘;
SELECT * FROM dba_profiles s
WHERE s.profile=‘MONITORING_PROFILE‘ AND resource_name=‘PASSWORD_LIFE_TIME‘;
ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;
ALTER PROFILE MONITORING_PROFILE LIMIT PASSWORD_LIFE_TIME UNLIMITED;
Alter Process
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select count(*) from v$session
Select count(*) from v$session where status=‘ACTIVE‘
show parameter processes
alter system set processes = 2000 scope = spfile;
Modify Log Path
===========================================================================
-- 修改重做日志文件 路径
select * from V$logfile;
shutdown immediate;
-- 迁移文件 到相关目录
startup mount;
alter database rename file ‘D:\APP\ORACLE\ORADATA\ORCL\REDO01.LOG‘ to ‘F:\ORACLE\ORADATA\ORCL\REDO01.LOG‘;
alter database rename file ‘D:\APP\ORACLE\ORADATA\ORCL\REDO02.LOG‘ to ‘F:\ORACLE\ORADATA\ORCL\REDO02.LOG‘;
alter database rename file ‘D:\APP\ORACLE\ORADATA\ORCL\REDO03.LOG‘ to ‘F:\ORACLE\ORADATA\ORCL\REDO03.LOG‘;
alter database open;
-- ------------------------------------------------------------------------------------------------------------
-- 创建多路控制文件
select name from v$controlfile;
a)、shutdown immediate;
b)、startup nomount;
c)、
alter system set control_files =
‘D:\APP\ORACLE\ORADATA\ORCL\CONTROL01.CTL‘,
‘D:\APP\ORACLE\RECOVERY_AREA\ORCL\CONTROL02.CTL‘,
‘F:\ORACLE\ORADATA\ORCL\CONTROL03.CTL‘
scope = spfile;
d)、shutdown immediate;
e)、startup;
Temp Tablespace 常出现在Rman 异机恢复后的操作
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create temporary tablespace temp_1
tempfile ‘F:\ORACLE\ORADATA\ORCL\TEMP_01.DBF‘ size 1G reuse
autoextend on next 64M maxsize UNLIMITED;
create temporary tablespace temp_2
tempfile ‘F:\ORACLE\ORADATA\ORCL\TEMP_02.DBF‘ size 1G reuse
autoextend on next 64M maxsize UNLIMITED;
alter tablespace temp_1 tablespace group temp_group;
alter tablespace temp_2 tablespace group temp_group;
alter database default temporary tablespace temp_group;
select * from dba_tablespace_groups;
alter tablespace temp1 tablespace group ‘‘;
alter database tempfile ‘D:\APP\ORACLE\ORADATA\ORCL\TEMP01.DBF‘ drop;