diff --git a/atlasdb-dbkvs-hikari/src/main/java/com/palantir/nexus/db/pool/config/OracleConnectionConfig.java b/atlasdb-dbkvs-hikari/src/main/java/com/palantir/nexus/db/pool/config/OracleConnectionConfig.java
index 304a822242c..0d4c6a82647 100644
--- a/atlasdb-dbkvs-hikari/src/main/java/com/palantir/nexus/db/pool/config/OracleConnectionConfig.java
+++ b/atlasdb-dbkvs-hikari/src/main/java/com/palantir/nexus/db/pool/config/OracleConnectionConfig.java
@@ -222,10 +222,10 @@ private String connectionDataString() {
                 + " One needs to be specified.");
     }
 
-    static class Builder extends ImmutableOracleConnectionConfig.Builder {}
+    public static class Builder extends ImmutableOracleConnectionConfig.Builder {}
 
     @Value.Immutable
-    interface ServiceNameConfiguration {
+    public interface ServiceNameConfiguration {
         String serviceName();
         String namespaceOverride();
 
diff --git a/changelog/@unreleased/pr-4640.v2.yml b/changelog/@unreleased/pr-4640.v2.yml
new file mode 100644
index 00000000000..580d3ef9b8e
--- /dev/null
+++ b/changelog/@unreleased/pr-4640.v2.yml
@@ -0,0 +1,5 @@
+type: fix
+fix:
+  description: Fix bug that prevented programmatic creation of Oracle connection configuration.
+  links:
+  - https://github.com/palantir/atlasdb/pull/4640