Install orafce for AlloyDB Omni

AlloyDB Omni does not include the orafce extension, but you can manually add it to an existing AlloyDB Omni installation by following the instructions on this page to provide additional functions and operators from the Oracle database.

Before you begin

Ensure that you've installed AlloyDB Omni on your system.

Add orafce to your AlloyDB Omni installation

To add the orafce extension to your AlloyDB Omni installation, follow these steps:

1. Find your installed AlloyDB Omni version labels:

   Docker

   docker run --rm -it  google/alloydbomni cat VERSION.txt

   Podman

   podman run --rm -it  google/alloydbomni cat VERSION.txt

   The output is similar to the following:

   AlloyDB Omni version: 15.7.0
   

   Take note of the AlloyDB Omni version number; you need it in the next step.

2. Set the OMNI_VERSION environment variable:

   OMNI_VERSION=VERSION

   Replace VERSION with the complete database server version from the previous step—for example, 15.7.0.

3. Create a new AlloyDB Omni container that includes orafce:

   Linux

         mkdir ~/alloydb-omni-orafce
         tee -a ~/alloydb-omni-orafce/Dockerfile << EOF
         ARG OMNI_VERSION
         FROM google/alloydbomni:${OMNI_VERSION}
         RUN apt-get update && 
   
               apt-get install -y --no-install-recommends 
   
               postgresql-15-orafce && 
   
               apt-get purge -y --auto-remove && 
   
               rm -rf /var/lib/apt/lists/*
         EOF
         cd ~/alloydb-omni-orafce
         sudo docker build --build-arg OMNI_VERSION=$OMNI_VERSION --tag google/alloydbomni-with-orafce:$OMNI_VERSION .
         

   macOS

         mkdir ~/alloydb-omni-orafce
         tee -a ~/alloydb-omni-orafce/Dockerfile << EOF
         ARG OMNI_VERSION
         FROM google/alloydbomni:${OMNI_VERSION}
         RUN apt-get update && 
   
               apt-get install -y --no-install-recommends 
   
               postgresql-15-orafce && 
   
               apt-get purge -y --auto-remove && 
   
               rm -rf /var/lib/apt/lists/*
         EOF
         cd ~/alloydb-omni-orafce
         sudo docker build --build-arg OMNI_VERSION=$OMNI_VERSION --tag google/alloydbomni-with-orafce:$OMNI_VERSION .
         

4. Create a new container with AlloyDB Omni named my-omni-orafce:

   docker run --name my-omni-orafce  -e POSTGRES_PASSWORD=NEW_PASSWORD  -d google/alloydbomni-with-orafce:OMNI_VERSION

5. Connect to your database with the orafce extension:

   docker exec -it my-omni-orafce psql -h localhost -U postgres

6. Enable orafce:

   CREATE EXTENSION IF NOT EXISTS ORAFCE;

7. Confirm that orafce is installed and enabled:

   SELECT oracle.sysdate();

   The output looks similar to the following:

      postgres=# SELECT oracle.sysdate();
      sysdate
      ---------------------
      2024-06-10 16:36:30
      (1 row)