ALTER DATABASE DATAFILE'd:ORANTDATABASEUSER1ORCL.ORA' RESIZE 1000M;
CREATE TABLESPACE INDEX_DATA DATAFILE'd:ORANTDATABASEINDEX_DATA' SIZE 500M;
ALTER DATABASE DATAFILE'd:ORANTDATABASERBS1ORCL.ORA' RESIZE 300M;
ALTER DATABASE DATAFILE'd:ORANTDASTABASETMP1ORCL.ORA' RESIZE 300M;

alter rollback segment "RB1" offline;
alter rollback segment "RB2" offline;
alter rollback segment "RB3" offline;
alter rollback segment "RB4" offline;
alter rollback segment "RB5" offline;
alter rollback segment "RB6" offline;
alter rollback segment "RB7" offline;
alter rollback segment "RB8" offline;
alter rollback segment "RB9" offline;
alter rollback segment "RB10" offline;
alter rollback segment "RB11" offline;
alter rollback segment "RB12" offline;
alter rollback segment "RB13" offline;
alter rollback segment "RB14" offline;
alter rollback segment "RB15" offline;
alter rollback segment "RB16" offline;

drop rollback segment "RB1";
drop rollback segment "RB2";
drop rollback segment "RB3";
drop rollback segment "RB4";
drop rollback segment "RB5";
drop rollback segment "RB6";
drop rollback segment "RB7";
drop rollback segment "RB8";
drop rollback segment "RB9";
drop rollback segment "RB10";
drop rollback segment "RB11";
drop rollback segment "RB12";
drop rollback segment "RB13";
drop rollback segment "RB14";
drop rollback segment "RB15";
drop rollback segment "RB16";
  
create rollback segment "RB1" tablespace "ROLLBACK_DATA" storage (initial 1m next 1m);
create rollback segment "RB2" tablespace "ROLLBACK_DATA" storage (initial 1m next 1m);
create rollback segment "RB3" tablespace "ROLLBACK_DATA" storage (initial 1m next 1m);
create rollback segment "RB4" tablespace "ROLLBACK_DATA" storage (initial 1m next 1m);
create rollback segment "RB5" tablespace "ROLLBACK_DATA" storage (initial 1m next 1m);
create rollback segment "RB6" tablespace "ROLLBACK_DATA" storage (initial 1m next 1m);


alter rollback segment "RB1" online;
alter rollback segment "RB2" online;
alter rollback segment "RB3" online;
alter rollback segment "RB4" online;
alter rollback segment "RB5" online;
alter rollback segment "RB6" online;


alter database add logfile 'c:orantdatabaselog1.ora' size 10m;
alter database add logfile 'c:orantdatabaselog2.ora' size 10m;
alter database add logfile 'c:orantdatabaselog3.ora' size 10m;
alter database add logfile 'c:orantdatabaselog4.ora' size 10m;
alter database drop logfile 'c:orantdatabaselog1orcl.ora';
alter database drop logfile 'c:orantdatabaselog2orcl.ora';
alter database drop logfile 'c:orantdatabaselog3orcl.ora';
alter database drop logfile 'c:orantdatabaselog4orcl.ora';


INITORAL.ORA配置：
SGA=db_block_buffers*db_block_size+share_pool_size+log_buffers+sort_arer_size+1m
   =1/3--1/2
以128M為（wéi）例：



DB_BLOCK_BUFFERS=16000（db_block_size=2k）
SHARE_POOL_SIZE=30720000(服務器（qì）要增大10倍)
LOG_BUFFERS=655360
SORT_AREA_SIZE=327680(服務器要增大100倍)－－－－－－－－－－添（tiān）加
GLOBAL_NAME=FALSE
ROLLBACK_SEGEMENTS=(RB1,RB2)//一般大型數據（jù）庫要建立6－8個回（huí）滾段（duàn）

添（tiān）加（jiā）：
DML_LOCKS=1000
OPEN_CURSORS=200