[bin.liu@enmoteam3 ~]$ expdp travel/aa DUMPFILE=AWR_DIR:dmp1,D_TEST:dmp2 parallel=2 Export: Release 11.2.0.4.0 - Production on Fri Sep 5 13:37:38 2014 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. Connected t
[bin.liu@enmoteam3 ~]$ expdp travel/aa DUMPFILE=AWR_DIR:dmp1,D_TEST:dmp2 parallel=2 Export: Release 11.2.0.4.0 - Production on Fri Sep 5 13:37:38 2014 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options FLASHBACK automatically enabled to preserve database integrity. Starting "TRAVEL"."SYS_EXPORT_SCHEMA_01": travel/******** DUMPFILE=AWR_DIR:dmp1,D_TEST:dmp2 parallel=2 Estimate in progress using BLOCKS method... Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA Total estimation using BLOCKS method: 232.6 MB Processing object type SCHEMA_EXPORT/USER Processing object type SCHEMA_EXPORT/SYSTEM_GRANT Processing object type SCHEMA_EXPORT/ROLE_GRANT Processing object type SCHEMA_EXPORT/DEFAULT_ROLE . . exported "TRAVEL"."TESTTABLE" 199.2 MB 1988400 rows . . exported "TRAVEL"."REDO" 484.8 KB 23387 rows . . exported "TRAVEL"."TEST2" 5.421 KB 1 rows . . exported "TRAVEL"."REDO_LOG" 0 KB 0 rows . . exported "TRAVEL"."TEST":"TEST_PART01" 0 KB 0 rows . . exported "TRAVEL"."TEST":"TEST_PART02" 0 KB 0 rows . . exported "TRAVEL"."TEST":"TEST_PART03" 0 KB 0 rows . . exported "TRAVEL"."TEST1" 0 KB 0 rows Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA Processing object type SCHEMA_EXPORT/DB_LINK Processing object type SCHEMA_EXPORT/TABLE/TABLE Processing object type SCHEMA_EXPORT/TABLE/COMMENT Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/CONSTRAINT Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS Master table "TRAVEL"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded ****************************************************************************** Dump file set for TRAVEL.SYS_EXPORT_SCHEMA_01 is: /tmp/dmp1.dmp /home/oracle/dmp2.dmp Job "TRAVEL"."SYS_EXPORT_SCHEMA_01" successfully completed at Fri Sep 5 13:38:52 2014 elapsed 0 00:01:11 [bin.liu@enmoteam3 ~]$ su - oracle Password: [oracle@enmoteam3 ~]$ [oracle@enmoteam3 ~]$ ls -l dmp2.dmp -rw-r----- 1 oracle oinstall 209633280 Sep 5 13:38 dmp2.dmp [oracle@enmoteam3 ~]$ ls -l /tmp/dmp1.dmp -rw-r----- 1 oracle oinstall 28672 Sep 5 13:38 /tmp/dmp1.dmp [oracle@enmoteam3 ~]$
原文地址:expdp_导出多个路径, 感谢原作者分享。

掌握添加MySQL用户的方法对于数据库管理员和开发者至关重要,因为它确保数据库的安全性和访问控制。1)使用CREATEUSER命令创建新用户,2)通过GRANT命令分配权限,3)使用FLUSHPRIVILEGES确保权限生效,4)定期审计和清理用户账户以维护性能和安全。

chosecharforfixed-lengthdata,varcharforvariable-lengthdata,andtextforlargetextfield.1)chariseffity forconsistent-lengthdatalikecodes.2)varcharsuitsvariable-lengthdatalikenames,ballancingflexibilitibility andperformance.3)

在MySQL中处理字符串数据类型和索引的最佳实践包括:1)选择合适的字符串类型,如CHAR用于固定长度,VARCHAR用于可变长度,TEXT用于大文本;2)谨慎索引,避免过度索引,针对常用查询创建索引;3)使用前缀索引和全文索引优化长字符串搜索;4)定期监控和优化索引,保持索引小巧高效。通过这些方法,可以在读取和写入性能之间取得平衡,提升数据库效率。

ToaddauserremotelytoMySQL,followthesesteps:1)ConnecttoMySQLasroot,2)Createanewuserwithremoteaccess,3)Grantnecessaryprivileges,and4)Flushprivileges.BecautiousofsecurityrisksbylimitingprivilegesandaccesstospecificIPs,ensuringstrongpasswords,andmonitori

tostorestringsefliceflicyInmySql,ChooSetherightDataTypeBasedyOrneOrneEds:1)USEcharforFixed-LengthStstringStringStringSlikeCountryCodes.2)UseVarcharforvariable-lengtthslikenames.3)USETEXTCONTENT.3)

选择MySQL的BLOB和TEXT数据类型时,BLOB适合存储二进制数据,TEXT适合存储文本数据。1)BLOB适用于图片、音频等二进制数据,2)TEXT适用于文章、评论等文本数据,选择时需考虑数据性质和性能优化。

No,youshouldnotusetherootuserinMySQLforyourproduct.Instead,createspecificuserswithlimitedprivilegestoenhancesecurityandperformance:1)Createanewuserwithastrongpassword,2)Grantonlynecessarypermissionstothisuser,3)Regularlyreviewandupdateuserpermissions

mySqlStringDatatatPessHouldBechoseBeadeDataCharacteristicsAndUsecases:1)USECHARFORFIXED LENGTHSTRINGSTRINGSLIKECOUNTRYCODES.2)USEDES.2)usevarcharforvariable-lengtthstringstringstringstringstringstringstringslikenames.3)usebinaryorvarrinaryorvarinarydatalbonydatalgebgeenfopical.4)


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