前面我们已经说过了Direct-path INSERT，现在来说一下ConventionalINSERT。文章来源Oracle? Database Administrator's Guide11 g Release 2 (11.2)” Conventional and Direct-Path INSERT You can use the INSERT ...
前面我们已经说过了Direct-path INSERT，现在来说一下ConventionalINSERT。文章来源Oracle? Database Administrator's Guide11 g Release 2 (11.2)” Conventional and Direct-Path INSERT You can use the INSERT ...
SQL> select count(*) from t; COUNT(*) ---------- 5442048 **************************** SQL> alter table t1 nologging; SQL> insert /*+append*/ into t1 2 select * from t;...5442048 ro...
SQL> select count(*) from t;COUNT(*)----------5442048****************************SQL> alter table t1 nologging;SQL> insert /*+append*/ into t12 select * from t;5442048 rows created.Elapsed: 0...
SQL> select count(*) from t; COUNT(*) ---------- 5442048 **************************** SQL> alter table t1 nologging; SQL> insert /*+append*/ into t1 2 select * from t; 5442048 rows created. ...E
|||||||||||||||||||||||||| Direct-Path INSERT without Logging In this mode, Oracle inserts data without redo or undo logging. (Some minimal logging is done to mark new extents invalid...
今天做了个测试测试insert速度 比较了insert 在logging,nologging,/*+APPEND*/ nologging下的速度 建立一个上千万行的表 SQL> select count(...
1. append方式添加记录对insert into ... values语句不起作用。2. 以append方式批量插入的记录，其存储位置在hwm 之上，即使hwm之下存在空闲块也不能使用。 （HWM（高水位线）(High Water Mark)：是数据库段管理中...