With AWS DMS, you can run dynamic SQL statements and prepared statements on source and target databases during a database migration. Oracle’s EXECUTE IMMEDIATE statement evaluates a string literal containing SQL statements at runtime. PostgreSQL’s
Transformation Only PostgreSQL Ora2Pg Transformation Only The key schema differences to take note of before Oracle to Postgres migration Consider the following differences between Oracle and Postgres when preparing for schema conversion: ColumnsUntil version 12, Postgres had no equivalen...
游标定义:PostgreSQL要求在DECLARE下声明游标变量。 NULL处理:Oracle的NVL()函数在PostgreSQL中应改为COALESCE()。 动态SQL执行:Oracle的EXECUTE IMMEDIATE需调整为PostgreSQL的EXECUTE语句。 这些转换要点涵盖了Oracle存储过程向PostgreSQL迁移时最常见的语法差异,有助于确保迁移后存储过程的功能正确性和性能稳定性。开发者在迁...
PostgreSQL ALTER INDEX … RENAME.demo=> ALTER INDEX IDX_EMP_ID RENAME TO IDX_EMP_ID_OLD;Oracle ALTER INDEX … TABLESPACE.ALTER INDEX IDX_EMP_ID REBUILD TABLESPACE USER_IDX;PostgreSQL ALTER INDEX … TABLESPACE.demo=> CREATE TABLESPACE PGIDX LOCATION '/data/inde...
接下來,透過執行 export_schema.sh 檔案,將 Oracle 物件匯出為 PostgreSQL 物件。複製 cd /app/migration/mig_project ./export_schema.sh 手動執行下列命令。複製 SET namespace="/app/migration/mig_project" ora2pg -p -t DBLINK -o dblink.sql -b %namespace%/schema/dblinks -c %namespace%/...
How to convert Oracle to Postgres? Let's compare the well-known open-source tool,Ora2pg , with the DBConvert / DBSync DB migration tools. Ora2pgis a free and open-source Perl-based tool used to migrate an Oracle database to a PostgreSQL database. It connects your Oracle database, au...
The Ora2Pg tool can convert SQL and PL/SQL code from Oracle syntax to PostgreSQL. So after the database is analyzed, Ora2Pg can estimate the code difficulties and the time necessary to migrate a full database.To estimate the migration cost in human-days, Ora2Pg allows you to use a ...
为了将Oracle数据库迁移到PostgreSQL,特别是针对“gt devcourseweb”环境,以下是一个详细的PostgreSQL DBA迁移计划。这个计划涵盖了迁移策略、DBA任务、工具使用、数据完整性、安全性以及性能测试等关键方面。 1. 研究Oracle到PostgreSQL的迁移策略 迁移策略概述 评估现有Oracle数据库:了解数据库的大小、结构、数据类型、索引...
With the new Oracle to Azure Database for PostgreSQLmigration guide, we dive deep into this problem space to give you the best practices you'll need to manage your database migration. You'll also get a 360° view—across the people, process, and tools aspects—into...
Using PostgreSQL to Oracle conversion and synchronization tools. When launching the DBConvert or DBSync application in GUI mode, it seamlessly guides you through the steps to initiate database migration or synchronization: 1. Connect to PostgreSQL source database. ...