SQLines Data is an open source (Apache License 2.0), scalable, parallel high performance data transfer and schema conversion tool that you can use for database migrations and ETL processes.
The tool also supports parallel high performance export to flat files, S3, HDFS using various formats and compressions.
SQLines Data is written in C/C++ and uses native low-level in-memory bulk loader APIs to transfer data. It is available for Linux, Windows, both 64-bit and 32-bit platforms.
You can use SQLines Data for cross-platform database migration. The tool migrates table definitions, constraints, indexes and transfers data.
You can use SQLines Data in your ETL processes as a data extact-load tool.
Sometime you do not need to move constraints and indexes into the target database. For example, in case when you move data for reporting purpose, or if you want to migrate constraints and indexes later.
Edit sqldata.cfg configuration file, and set -constraints=no and -indexes=no.