diff --git a/packages/core/src/tracing/instrumentation/databases/ioredis.js b/packages/core/src/tracing/instrumentation/databases/ioredis.js
index e88a1c69e3..29e6542706 100644
--- a/packages/core/src/tracing/instrumentation/databases/ioredis.js
+++ b/packages/core/src/tracing/instrumentation/databases/ioredis.js
@@ -97,11 +97,16 @@ function instrumentSendCommand(original) {
       span.stack = tracingUtil.getStackTrace(wrappedInternalSendCommand);
 
       callback = cls.ns.bind(onResult);
-      command.promise.then(
-        // make sure that the first parameter is never truthy
-        callback.bind(null, null),
-        callback
-      );
+      if (typeof command.promise?.then === 'function') {
+        command.promise.then(
+          // make sure that the first parameter is never truthy
+          callback.bind(null, null),
+          callback
+        );
+      } else {
+        tracingUtil.handleUnexpectedReturnValue(command.promise, exports.spanName, `command "${command.name}"`);
+        onResult();
+      }
 
       return original.apply(client, argsForOriginal);
 
diff --git a/packages/core/src/tracing/instrumentation/databases/mongodb.js b/packages/core/src/tracing/instrumentation/databases/mongodb.js
index 7582e1917c..fa473347e5 100644
--- a/packages/core/src/tracing/instrumentation/databases/mongodb.js
+++ b/packages/core/src/tracing/instrumentation/databases/mongodb.js
@@ -434,6 +434,11 @@ function stringifyWhenNecessary(obj) {
   return tracingUtil.shortenDatabaseStatement(JSON.stringify(obj));
 }
 
+function finishSpan(span) {
+  span.d = Date.now() - span.ts;
+  span.transmit();
+}
+
 function createWrappedCallback(span, originalCallback) {
   return cls.ns.bind(function (error) {
     if (error) {
@@ -441,9 +446,7 @@ function createWrappedCallback(span, originalCallback) {
       tracingUtil.setErrorDetails(span, error, 'mongo');
     }
 
-    span.d = Date.now() - span.ts;
-    span.transmit();
-
+    finishSpan(span);
     return originalCallback.apply(this, arguments);
   });
 }
@@ -457,20 +460,21 @@ function handleCallbackOrPromise(ctx, originalArgs, originalFunction, span) {
 
   const resultPromise = originalFunction.apply(ctx, originalArgs);
 
-  if (resultPromise && resultPromise.then) {
+  if (resultPromise && typeof resultPromise.then === 'function') {
     resultPromise
       .then(result => {
-        span.d = Date.now() - span.ts;
-        span.transmit();
+        finishSpan(span);
         return result;
       })
       .catch(err => {
         span.ec = 1;
         tracingUtil.setErrorDetails(span, err, 'mongo');
-        span.d = Date.now() - span.ts;
-        span.transmit();
+        finishSpan(span);
         return err;
       });
+  } else {
+    tracingUtil.handleUnexpectedReturnValue(resultPromise, exports.spanName, 'command');
+    finishSpan(span);
   }
 
   return resultPromise;
diff --git a/packages/core/src/tracing/instrumentation/databases/redis.js b/packages/core/src/tracing/instrumentation/databases/redis.js
index 4f88ec8c85..21a14665ee 100644
--- a/packages/core/src/tracing/instrumentation/databases/redis.js
+++ b/packages/core/src/tracing/instrumentation/databases/redis.js
@@ -342,11 +342,10 @@ function instrumentCommand(original, command, address, cbStyle) {
         if (typeof userProvidedCallback !== 'function') {
           userProvidedCallback = null;
           modifiedArgs.push(callback);
-          return original.apply(origCtx, modifiedArgs);
         } else {
           modifiedArgs[modifiedArgs.length - 1] = callback;
-          return original.apply(origCtx, modifiedArgs);
         }
+        return original.apply(origCtx, modifiedArgs);
       } else {
         const promise = original.apply(origCtx, origArgs);
         if (typeof promise?.then === 'function') {
@@ -361,6 +360,7 @@ function instrumentCommand(original, command, address, cbStyle) {
             });
         } else {
           // UNKNOWN CASE
+          tracingUtil.handleUnexpectedReturnValue(promise, exports.spanName, `command "${command}"`);
           onResult();
         }
         return promise;
@@ -492,6 +492,9 @@ function instrumentMultiExec(origCtx, origArgs, original, address, isAtomic, cbS
               onResult(error);
               return error;
             });
+        } else {
+          tracingUtil.handleUnexpectedReturnValue(promise, exports.spanName, 'multi/pipeline operation');
+          onResult();
         }
 
         return promise;