Oracle BLOB Migration Explained

1 year ago
William Carter
2 minutes

There are multiple options provided by Oracle to migrate Blob field data, here are a few common methods:

  1. Utilize the Oracle Data Pump tool: Oracle Data Pump is an import/export tool for Oracle databases that can export Blob data as binary files and import them into another database. This operation can be performed using the expdp and impdp command line tools or the Oracle Enterprise Manager graphical interface tool.
  2. One option is to use a PL/SQL script to read Blob data from a source table and insert it into a target table. Subprograms from the DBMS_LOB package can be used to handle Blob fields. This approach requires writing custom scripts and programs.
  3. Using third-party ETL tools: You can utilize tools such as Oracle Data Integrator (ODI), Informatica, Talend, etc., to migrate Blob field data. These tools offer visual interfaces and extensive features to facilitate the extraction, transformation, and loading of Blob field data.
  4. To migrate Blob field data between databases located on different servers, you can create a database link in the target database and then use PL/SQL or data export/import tools to select Blob field data from the source database and insert it into a table in the target database.

The above are some common methods, with the specific choice depending on the needs and environment of the migration.

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