两者重建索引时的扫描方式不同,rebuild用的是“INDEX FAST FULL SCAN”,rebuild online用的是“TABLE ACCESS FULL”; 即rebuild index是扫描索引块,而rebuild index online是扫描全表的数据块. 测试过程 SQL> create table t1 as select * From emp; Table created SQL> CREATE INDEX i_empno on T1 (empno);...
alter INDEX SCOTT.T_P_IND REBUILD PARTITION SYS_P116;test1 #drop table test1 purge; create table t1 as select * from t; SCOTT > select a.TABLE_NAME,segment_name,bytes/1024/1024 from user_tables a,dba_segments b where a.TABLE_NAME=b.segment_name and a.table_name='T1' and owner='S...
ALTER INDEX { index_name | ALL } ON [ schema_name. ] table_name { REBUILD { [ PARTITION = ALL [ WITH ( <rebuild_index_option> ) ] ] | [ PARTITION = partition_number [ WITH ( <single_partition_rebuild_index_option> ) ] ] } | DISABLE | REORGANIZE [ PARTITION = partition_number...
Is the name of the table or view associated with the index. To display a report of the indexes on an object, use thesys.indexescatalog view. REBUILD [ WITH(<rebuild_index_option> [,... n])] Specifies the index will be rebuilt using the same columns, index type, uniqueness attribute,...
一 先看alter index rebuild: SQL> conn 请输入用户名: wwf/wwf 已连接。 SQL> drop table wwftest; 表已丢弃。 SQL> create table wwftest as select * from all_objects where rownum < 20000; 表已创建。 SQL> create index ind_wwftest on wwftest(object_id) tablespace idx_ts; ...
ALTER TABLE modifies a table definition by altering, adding, or dropping columns and constraints. ALTER TABLE also reassigns and rebuilds partitions, or disables and enables constraints and triggers.
For example – in the below command I’m rebuilding all indexes for the HumanResources.Department table:ALTER INDEX ALL ON HumanResources.Department REBUILD;So I received a few questions on this topic which I’ll detail here – along with the query I used to “prove” out the answers (and...
To modify a domain index, you must haveEXECUTEobject privilege on the indextype of the index. Schema object privileges are granted on the parent index, not on individual index partitions or subpartitions. You must have tablespace quota to modify, rebuild, or split an index partition or to mod...
Modifies an existing table or view index (rowstore, columnstore, or XML) by disabling, rebuilding, or reorganizing the index; or by setting options on the index.
一 先看alter index rebuild: SQL> conn 请输入用户名: wwf/wwf 已连接。 SQL> drop table wwftest; 表已丢弃。 SQL> create table wwftest as select * from all_objects where rownum < 20000; 表已创建。 SQL> create index ind_wwftest on wwftest(object_id) tablespace idx_ts; ...