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Database Systems Design Advanced Database Technology 一、Database principles Relational data model – relational algebra SQL – DDL, DML, DCL, ODBC(JDBC) Database design — Entity-Relationship model Relation normal forms XML – DTD, XML Schema, XPath, XQuery Object data model(*) Database applica...
alter database recover managed standby database cancel; -- 11g alter database recover managed standby database using current logfile disconnect from session; -- 12c 默认实时应用 alter database recover managed standby database disconnect from session; 1. 2. 3. 4. 5. 归档日志管理 归档删除策略 A...
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Active Database Duplication Using Image Copies Active Database Duplication Using Backup Sets Notes:12.1之后开始支持备份集(Backup Sets)复制。 在某些场景下,使用备份集(Backup Sets)进行主动数据库复制比映像副本(Image Copies)可能更为可取: a.在复制数据库时想要使用并行多段备份,压缩或加密。