(RN); #查询没有索引的表 Select table_name from user_tables where table_name not in (select table_name from user_indexes) Select table_name from user_tables where table_name not in (select table_name from user_ind_columns) #AWR设置每隔30分钟收集一次报告,保留14天的报告 exec DBMS_WORKLOAD...
The highest partition of a global index must have a partition bound, all of whose values are MAXVALUE. This ensures that all rows in the underlying table can be represented in the index. Global prefixed indexes can be unique or nonunique. You cannot add a partition to a global index beca...
Average number of data blocks for each index value (for an index on a table) (AVG_DATA_BLOCKS_PER_KEY) Clustering factor (how well ordered the rows are about the indexed values) (CLUSTERING_FACTOR) (2)TABLE table:对表进行分析,分析的结果会放在USER_TABLES, ALL_TABLES, and DBA_TABLES表中...
--在字段上建立索引createindex INDEX_TABLENAMEonTABLENAME (COLUMN1,COLUMN2);--增加主键索引altertableT8_FOREX_EXCHANGEaddconstraintT8_FOREX_EXCHANGE_PKprimarykey (ID);--增加唯一索引altertableT8_FOREX_EXCHANGEaddconstraintT8_FOREX_EXCHANGE_DEALNOunique(DEALNO);--查询表索引select*fromuser_indexes twhe...
SQL>select table_name,cache from user_tables where instr(cache,'Y')>0; 3 索引 1、 查看索引个数和类别 SQL>select index_name,index_type,table_name from user_indexes order by table_name; 2、 查看索引被索引的字段 SQL>select * from user_ind_columns where index_name=upper('&index_name')...
2、dba_col_privs用户具有的列对象权限信息dba_role_privs用户具有的角色信息dba_audit_trail审计跟踪记录信息dba_stmt_audit_opts审计设置信息dba_audit_object对象审计结果信息dba_audit_session会话审计结果信息dba_indexes用户方式的索引信息user_开头user_objects用户对象信息user_source数据库用户的一切资源对象信息user...
The last point is particularly tricky, Joan points out. The table and columns, and even the SQL statements, may not have changed, but if the data pattern has changed, once-useful indexes may not be useful anymore while also being a drag on the performance of DML statements. Similarly, som...
The following is a list of Oracledata dictionary views that are supported by the gateway forDB2 UDB for z/OS,DB2 UDB for iSeries, andDB2/UDB DRDA servers. ALL_CATALOG ALL_COL_COMMENTS ALL_CONS_COLUMNS ALL_CONSTRAINTS ALL_INDEXES ALL_IND_COLUMNS ...
8-19 Deleting a Table... 8-21 Managing Indexes ...
ORA-01536:space quota exceeded for table space 'CYYD' 解决办法: alter user USERNAME quota 100M on TABLESPACENAME; alter user USERNAME quota unlimited on TABLESPACENAME; grant unlimited tablespace to USERNAME; quota是为了限制用户对表空间的使用,比如你限制用户Guotu在tablespace CYYD中的quota为10m,当...