For more information, see Using table mapping to specify task settings. Then, use code similar to the following example to build the transformation rules for schema, tables, and column case handling. In the Table mappings view, select the JSON tab, and then choose Enable JSON editing. Use the AWS DMS console or the AWS Command Line Interface (AWS CLI) to create the replication instance and then create the source and target endpoints.Ģ. Oracle> SELECT table_name, column_name from dba_tab_columns where owner='SCOTT' and column_name upper(column_name) Ĭreate endpoints and a replication instance:ġ. oracle> SELECT table_name from dba_tables where owner='SCOTT' and table_name upper(table_name) For this reason, don't use these mapping rules. A multi-model database including Geospatial Data type is an essential requirement. If the application is accustomed to mixed-case table and column names, it's a best practice to allow AWS DMS to replicate the tables exactly as it finds them. MySQL, Oracle, PostgreSQL, Microsoft SQL Server, MongoDB, Redis. Verify that no tables in the Oracle database were created with lowercase letters in the table or column names. Collectively, they contain a small number of rows. This script creates four tables under the SCOTT schema: EMP, DEPT, BONUS, and SALGRADE. If you have an Amazon Relational Database Service (Amazon RDS) DB instance that's running Oracle, search online for a similar script. If you have an on-premises Oracle database, you can create this schema by running the following command: $ORACLE_HOME/rdbms/admin/utlsampl.sql This example migrates the Oracle SCOTT schema to PostgreSQL. For more information, see Use the AWS Schema Conversion Tool (AWS SCT) to convert the Oracle schema to PostgreSQL. As a workaround, you can override AWS DMS quotes with mapping rules. Because the AWS Database Migration Service (AWS DMS) can't autocorrect metadata storage formatting, AWS DMS creates the objects in quotes. However, this isn't a best practice, because doing so can cause unexpected behavior. With either database, it's possible to override these default formats by encasing object names in quotes when you create them. Oracle stores metadata in its data dictionary in uppercase, and PostgreSQL stores it in lowercase.
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