一、EXPDP和IMPDP使用说明 Oracle Database 10g引入了最新的数据泵(Data Dump)技术，数据泵导出导入(EXPD...
expdp hr/hr DIRECTORY=dpump_dir1 DUMPFILE=hr_scn.dmp FLASHBACK_TIME="TO_TIMESTAMP('25-08-2003 14:35:00', 'DD-MM-YYYY HH24:MI:SS')" 想省事可以用flashback_time=systimestamp 如果报ORA-39150,就用下面的选项 flashback_time=to_timestamp(localtimestamp) flashback_time=to_timestamp_tz(...
expdp hr/hr DIRECTORY=dpump_dir1 DUMPFILE=hr_scn.dmp FLASHBACK_TIME="TO_TIMESTAMP('25-08-2003 14:35:00', 'DD-MM-YYYY HH24:MI:SS')" 想省事可以用flashback_time=systimestamp 如果报ORA-39150,就用下面的选项 flashback_time=to_timestamp(localtimestamp) flashback_time=to_timestamp_tz(...
1、impdp报无权限 [oracle@srtcreen OGG]$ expdp srt_creen/a69UiBOB1gk directory=DATA_PUMP_DIR network_link=OGG_TYKF tables=CSCNEW.TAB_CS_USER,CSCNEW.TAB_CS_QUEUES,CSCNEW.TAB_CS_CALL_PICKUP,CSCNEW.TAB_CS_CALL_COMING,CSCNEW.TAB_CS_CALLLOG FLASHBACK_TIME=\"to_timestamp\(\'2011-12-0...
(scope => 'TIMESTAMP', before_timestamp => SYSTIMESTAMP - INTERVAL '1' DAY); END; /Example to purge the historical Flashback Time Travel data before the specified scn: BEGIN DBMS_CLOUD_ADMIN.PURGE_FLASHBACK_ARCHIVE (scope => 'SCN',before_scn=> '5928826'); END; / See PURGE_FLASHBA...
Bug 27092508 Flashback Queries Fails with ORA-08181 and/or ORA-01466 Due to Corrupted Timestamp Mappings in SYS.SMON_SCN_TIME This note gives a brief overview of bug 27092508. The content was last updated on: 03-NOV-2021 Click here for details of each of the sections below. ...
The mapping of timestamps to SCNs is not always exact. When using timestamps with theFLASHBACKTABLEstatement, the time to which the table is flashed back can vary by up to approximately three seconds of the time specified forTO_TIMESTAMP. If an exact point in time is required, then use...
4.SCN 与 timestamp 关系 Oracle 在内部都是使用scn,即使你指定的是as of timestamp,oracle 也会将其转换成scn,系统时间标记与scn 之间存在一张表,即SYS 下的SMON_SCN_TIME 每隔5 分钟,系统产生一次系统时间标记与scn 的匹配并存入sys.smon_scn_time 表,该表中记录了最近1440个系统时间标记与scn 的匹配记录...
SELECT*FROMemployeesASOFTIMESTAMP(SYSTIMESTAMP-INTERVAL'60'MINUTE); 6. 可以在自连接或集合操作中使用AS OF子句,来提取和比较来自于不同时间的数据。 可以通过在闪回查询之前加上CREATE TABLE AS SELECT或INSERT INTO TABLE SELECT,来存储闪回查询的结果。
每个时间点都对应一个SCN值。在10g中,系统平均每隔3秒产生一次系统时间与SCN的匹配存入sys.SMO_SCN_TIME表中。SCN和TIMESTAMP也可相互转换。 SQL> DESC SMON_SCN_TIME; Name Type Nullable Default Comments --- --- --- --- --- THREAD NUMBER Y TIME_MP NUMBER Y TIME_DP DATE Y SCN_WRP NUMBER Y...