7 Administrative Tasks for Oracle Machine Learning for R

This chapter describes administrative tasks for maintaining and optimizing OML4R.

This chapter contains these topics:

• Install Oracle R Distribution on Linux in a Non-Default R_HOME
  The Linux RPMs can be installed to a directory other than the default Linux R_HOME, /usr/lib64/R.
• Upgrade Oracle Machine Learning for R
  You can upgrade OML4R from the previous release 1.5.1 to the current release 2.0.
• Downgrade Oracle Machine Learning for R
  You can downgrade OML4R to the current release 2.0 from any previous release 1.5.1 by reinstalling the product.
• Migrate Oracle Machine Learning for R Data
  OML4R Server includes migration scripts that you can run to migrate the RQSYS schema and OML4R user data from a source database to a target database
• Migrate Oracle Machine Learning for R After a Database Upgrade
  After upgrading your Oracle Database, you must migrate your OML4R Server components to the new ORACLE_HOME.
• Uninstall Oracle Machine Learning for R
  Instructions for uninstalling OML4R
• Install Additional R Packages on Linux or UNIX
  On Linux and UNIX platforms, the OML4R Server installation provides the ORE script, which you can run from the operating system prompt to install additional R packages.
• Create a Database User for Oracle Machine Learning for R
  In Database 19c, the server.sh script ships with Oracle Database 23ai. You can download server.sh from the server. The script installs creates a new OML4R user, and the script rqgrant.sql in the same directory applies the required grants to the new user.
• Create an Oracle Wallet for an Oracle Machine Learning for R Connection
  An Oracle wallet is a password-protected container for storing security credentials in Oracle Database.
• Control Memory Used by Embedded R
  How to control the memory used by embedded R execution.