Oracle常用管理语句记录

1. 查找外键约束

select'alter table ' || table_name || ' enable constraint ' || constraint_name || ';'from user_constraints where constraint_type = 'r';

2. 重新分析表

select'analyze table ' || t.table_name || ' compute statistics for table; 'from user_tables t order by t.num_rows desc;

3. 空表分配空间

select'alter table '||table_name||' allocate extent;' from user_tables wherenum_rows=0;

4.imp、exp导入导出

impomr/bsoft@bshrp56 file=f:\wud\omr20180506.dmp fromuser=omr touser=omrlog=omr_imp.txt

impupdate/update@10.0.0.109:1521/histestfile=d:\auto_update20160218.dmp

expportal/bsoft@bshrp56_bj file=f:\wud\portal20180506.dmplog=f:\wud\portal20180506.txt owner=portal

ignore=ytables=(tablea,tableb)，可以忽略创建错误，手工创建后再单独导入失败的表。

5. 创建完后修改参数

alterprofile default limit password_life_time unlimited;

altersystem set deferred_segment_creation=false;

altersystem set audit_trail=none scope=spfile sid='cyey';

altersystem set sec_case_sensitive_logon=false;

alterprofile default limit failed_login_attempts unlimited;