Oracle生产非分区表改成分区表（业务低峰期）-CFANZ编程社区

--生产非分区热表改成分区表
-- CREATE TABLE 创建临时分区表
CREATE TABLE RS.T_RC_CD_MC_SM_0926
(
ENY_CD_NO VARCHAR2(200) NOT NULL,
SB_CD_NO VARCHAR2(20) NOT NULL,
IN_NO VARCHAR2(20) NOT NULL,
TN_DT VARCHAR2(8) NOT NULL,
DY_SM NUMBER(13,2) NOT NULL
)
PARTITION BY RANGE (TN_DT)
(
PARTITION P201801 VALUES LESS THAN ('20180101')
TABLESPACE RS_DATA,
PARTITION P201802 VALUES LESS THAN ('20180201')
TABLESPACE RS_DATA,
PARTITION P201803 VALUES LESS THAN ('20180301')
TABLESPACE RS_DATA,
PARTITION P201804 VALUES LESS THAN ('20180401')
TABLESPACE RS_DATA,
PARTITION P201805 VALUES LESS THAN ('20180501')
TABLESPACE RS_DATA,
PARTITION P201806 VALUES LESS THAN ('20180601')
TABLESPACE RS_DATA,
PARTITION P201807 VALUES LESS THAN ('20180701')
TABLESPACE RS_DATA,
PARTITION P201808 VALUES LESS THAN ('20180801')
TABLESPACE RS_DATA,
PARTITION P201809 VALUES LESS THAN ('20180901')
TABLESPACE RS_DATA,
PARTITION P201810 VALUES LESS THAN ('20181001')
TABLESPACE RS_DATA,
PARTITION P201811 VALUES LESS THAN ('20181101')
TABLESPACE RS_DATA,
PARTITION P201812 VALUES LESS THAN ('20181201')
TABLESPACE RS_DATA,
PARTITION P201901 VALUES LESS THAN ('20190101')
TABLESPACE RS_DATA,
PARTITION P201902 VALUES LESS THAN ('20190201')
TABLESPACE RS_DATA,
PARTITION P201903 VALUES LESS THAN ('20190301')
TABLESPACE RS_DATA,
PARTITION P201904 VALUES LESS THAN ('20190401')
TABLESPACE RS_DATA,
PARTITION P201905 VALUES LESS THAN ('20190501')
TABLESPACE RS_DATA,
PARTITION P201906 VALUES LESS THAN ('20190601')
TABLESPACE RS_DATA,
PARTITION P201907 VALUES LESS THAN ('20190701')
TABLESPACE RS_DATA,
PARTITION P201908 VALUES LESS THAN ('20190801')
TABLESPACE RS_DATA,
PARTITION P201909 VALUES LESS THAN ('20190901')
TABLESPACE RS_DATA,
PARTITION P201910 VALUES LESS THAN ('20191001')
TABLESPACE RS_DATA,
PARTITION P201911 VALUES LESS THAN ('20191101')
TABLESPACE RS_DATA,
PARTITION P201912 VALUES LESS THAN ('20191201')
TABLESPACE RS_DATA,
PARTITION P202001 VALUES LESS THAN ('20200101')
TABLESPACE RS_DATA,
PARTITION P202002 VALUES LESS THAN ('20200201')
TABLESPACE RS_DATA,
PARTITION PMAX VALUES LESS THAN (MAXVALUE)
TABLESPACE RS_DATA
);
-- ADD COMMENTS TO THE TABLE
COMMENT ON TABLE RS.T_RC_CD_MC_SM_0926
IS '商户+卡交易金额累加表';
-- ADD COMMENTS TO THE COLUMNS
COMMENT ON COLUMN RS.T_RC_CD_MC_SM_0926.ENY_CD_NO
IS '卡号密文';
COMMENT ON COLUMN RS.T_RC_CD_MC_SM_0926.SB_CD_NO
IS '卡号';
COMMENT ON COLUMN RS.T_RC_CD_MC_SM_0926.IN_NO
IS '商编';
COMMENT ON COLUMN RS.T_RC_CD_MC_SM_0926.TN_DT
IS '交易日期';
COMMENT ON COLUMN RS.T_RC_CD_MC_SM_0926.DY_SM
IS '累计金额';
-- CREATE/RECREATE PRIMARY, UNIQUE AND FOREIGN KEY CONSTRAINTS
ALTER TABLE RS.T_RC_CD_MC_SM_0926 ADD CONSTRAINT PK_T_RC_CD_MC_SM_0926 PRIMARY KEY (ENY_CD_NO, IN_NO, TN_DT) USING INDEX TABLESPACE RS_IDX LOCAL;

--导出需要的原表数据
expdp \'/ as sysdba\' dumpfile=t_rc_cd_mc_sm_180901.dmp directory=exp_shengchan logfile=t_rc_cd_mc_sm_180901.log \
tables=rs.t_rc_cd_mc_sm query=rs.t_rc_cd_mc_sm:\"where tran_dt\>\=\'20180901\'\"

---30秒
--将数据导入到临时表
impdp \'/ as sysdba\' directory=exp_shengchan dumpfile=t_rc_cd_mc_sm_180901.dmp logfile=t_rc_cd_mc_sm_180901.log \
remap_table=rs.t_rc_cd_mc_sm:t_rc_cd_mc_sm_0926

-----CREATE TABLE RS.T_RCS_CRD_MEC_SUM_09261 TABLESPACE RS_DATA AS SELECT * FROM RS.T_RC_CD_MC_SM WHERE TN_DT >='20180901'

1.将原表RENAME 成BAK表----原表RENAME BAK RS.T_RC_CD_MC_SM RS.T_RC_CD_MC_SM_BAK
---RENAME INDEX
ALTER INDEX RS.PK_T_RC_CD_MC_SM RENAME TO PK_T_RC_CD_MC_SM_BAK;

--RENAME PK
ALTER TABLE RS.T_RC_CD_MC_SM RENAME CONSTRAINT PK_T_RC_CD_MC_SM TO PK_T_RC_CD_MC_SM_BAK;

--RENAME TABLE
ALTER TABLE RS.T_RC_CD_MC_SM RENAME TO T_RC_CD_MC_SM_BAK;

2.临时表 RENAME 成原表
----临时表 RENAME 成原表 RS.T_RC_CD_MC_SM_0926 RS.T_RC_CD_MC_SM
ALTER INDEX PTS.PK_T_RC_CD_MC_SM_0926 RENAME TO PK_T_RC_CD_MC_SM;

--RENAME PK
ALTER TABLE RS.T_RC_CD_MC_SM_0926 RENAME CONSTRAINT PK_T_RC_CD_MC_SM_0926 TO PK_T_RC_CD_MC_SM;

--RENAME TABLE
ALTER TABLE RS.T_RC_CD_MC_SM_0926 RENAME TO T_RC_CD_MC_SM;

3.收集新表统计信息

SQL> EXEC DBMS_STATS.UNLOCK_TABLE_STATS(OWNNAME => 'RS',TABNAME => 'T_RC_CD_MC_SM');

PL/SQL PROCEDURE SUCCESSFULLY COMPLETED.

SQL> EXEC DBMS_STATS.GATHER_TABLE_STATS(OWNNAME => 'RS',TABNAME => 'T_RC_CD_MC_SM',ESTIMATE_PERCENT => 30,METHOD_OPT=> 'FOR ALL INDEXED COLUMNS',DEGREE=>16,CASCADE=>TRUE);

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