![]() ![]() Once you create all required users (roles) and tablespaces and privileges in PostgreSQL, do the initial load using SQLines Data and exclude all partition tables. ![]() I have used the SQLines Data open source tool to do this migration. Please find the equivalent function in PostgreSQL user manual. ![]() There are several differences in built-in functions between Oracle and PostgreSQL. Consider converting packages into procedures and functions. No package stored procedure is available in PostgreSQL.Commonly used types (Oracle –> PostgreSQL) include: VARCHAR2–>VARCHAR, CHAR –>CHAR, CLOB –>TEXT, BLOB RAW \–>BYTEA (1 GB limit) or Large object, DATE–>TIMESTAMP(0), TIMESTAMP WITH LOCAL TIME ZONE –> TIMESTAMPTZ, NUMBER–> NUMERIC, NUMBER(4) –>SMALLINT, NUMBER(9) –> INT, NUMBER(18) –> BIGINT. There are quite a few data type differences between Oracle and PostgreSQL.Tools and utilities used: SQLines Data, SQLine Converter, and PGAdmin 4.x Pre-migration considerations: Versions used: Oracle 12.2.0.1, PostgreSQL 12.3 Operating System: CentOS Linux 8. It does not cover installation and configuration of PostgreSQL.Ĭaution: Every environment is different, so test this in a non-production environment before working with production. This technical blog shares a simple method to migrate the Oracle schema to a PostgreSQL database using open source tools. In particular, it is challenging to migrate an entire Oracle schema with partitioning tables. However, migrating an Oracle database to PostgreSQL is not a straightforward task in an on-premises data center. Also PostgreSQL professionals are less expensive to hire than Oracle DBAs. All PostgreSQL features are available at no cost or minimal cost. PostgreSQL is a widely used open source RDBMS, and the PostgreSQL database model is very similar to Oracle. One such solution would be migrating an Oracle database to PostgreSQL. Many companies are looking for open source database solutions to help shrink the IT budget by minimizing or avoiding support costs. ![]()
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