This chapter explains logical database, which is an expression of the data's organization represented in the database. The data organization is communicated to the database management system (DBMS) through a data definition language (DDL). A foreign key takes on the characteristics of a ...
SQL> CREATE DATABASE LINK PRE_TBL_DATA CONNECT TO SYSTEM IDENTIFIED BY ADMIN USING 'ORCL_PD'; Database link created. 执行使用DBMS_LOGSTDBY.INSTANTIATE_TABLE过程,重新同步SCOTT.TMP1表(注意执行该过程前别忘了暂停当前的SQL应用): SQL>EXEC DBMS_LOGSTDBY.INSTANTIATE_TABLE('SCOTT', 'DEPT', 'PRE_TBL...
A logical replication slot fails to be created in the source database. Solution Check whether the number of replication slots in the source database reaches the upper limit. If yes, delete replication slots that are no longer used from the source database or increase the value ofmax_replicatio...
Caused by: Error : 16331, Position : 0, Sql = BEGIN sys.dbms_logmnr.start_logmnr(OPTIONS => DBMS_LOGMNR.DICT_FROM_ONLINE_CATALOG + DBMS_LOGMNR.NO_ROWID_IN_STMT);END;, OriginalSql = BEGIN sys.dbms_logmnr.start_logmnr(OPTIONS => DBMS_LOGMNR.DICT_FROM_ONLINE_CATALOG + DBMS_LOGMNR.NO_R...
in the physical design phase, you would determine which DBMS to use (e.g., MySQL, Oracle, PostgreSQL) and create the actual database schema. This involves specifying the exact table structures, data types, constraints, and indexes. It also includes decisions about data storage, parti...
DROP DATABASE LINK。 DROP MATERIALIZED VIEW。 DROP MATERIALIZED VIEW LOG。 EXPLAIN。 LOCK TABLE。 SET CONSTRAINTS。 SET ROLE。 SET TRANSACTION。 另外,由于SQL语句非常灵活,即使是那些能被SQL应用支持的DDL语句,可能在附加了某些特别的参数后,也不会在逻辑Standby端执行,由于数目较多,此处不再一一列举,感兴趣...
Physical Data Model: This Data Model describesHOWthe system will be implemented using a specific DBMS system. This model is typically created by DBA and developers. The purpose is actual implementation of the database. Types of Data Model ...
Re-create the tableHR.EMPLOYEESwith all its data in the logical standby database by using theDBMS_LOGSTDBY.INSTANTIATE_TABLEprocedure. For example: SQL> EXECUTE DBMS_LOGSTDBY.INSTANTIATE_TABLE(shema_name => 'HR', - object-+_name => 'EMPLOYEES', - ...
During a full or incremental synchronization, an error is reported, and the log information is as follows: service LOGMANAGER failed, cause by: Initialize logical replication stream failed, the source database may have a long transaction: *** Possible Causes A logical replication slot fails to be...
Add, delete, or modify any new attribute, entity, or relationship in the database. Protect Your Data with MiniTool ShadowMaker Now, after knowing all of the pieces of information, you can know that data independence is quite significant in the database management system (DBMS). As a property...