diff --git a/jOOQ/src/main/java/org/jooq/impl/MetaImpl.java b/jOOQ/src/main/java/org/jooq/impl/MetaImpl.java
index 9b9c0fa993..d7a61be373 100644
--- a/jOOQ/src/main/java/org/jooq/impl/MetaImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/MetaImpl.java
@@ -828,10 +828,15 @@ final class MetaImpl extends AbstractMeta {
             groups.forEach((k, v) -> {
 
                 // [#7377] The schema may be null instead of "" in some dialects
-                Schema schema = schemas.get(name(
-                    hasCatalog(getCatalog()) ? defaultString(k.get(0, String.class)) : null,
-                    defaultString(k.get(1, String.class))
-                ));
+                // [#12243] [#12240] Not all dialects have catalog support
+                Schema schema = schemas.get(
+                    hasCatalog(getCatalog())
+                    ? name(
+                        defaultString(k.get(0, String.class)),
+                        defaultString(k.get(1, String.class))
+                    )
+                    : name(defaultString(k.get(1, String.class)))
+                );
 
                 String fkName = k.get(3, String.class);
                 String pkName = k.get(4, String.class);