diff --git a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
index 5827299..b1a0446 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
@@ -683,7 +683,7 @@
     // Update superproject gitlinks if required.
     if (!branches.isEmpty()) {
       try (MergeOpRepoManager orm = ormProvider.get()) {
-        orm.setContext(db, TimeUtil.nowTs(), user);
+        orm.setContext(TimeUtil.nowTs(), user);
         SubmoduleOp op = subOpFactory.create(branches, orm);
         op.updateSuperProjects();
       } catch (SubmoduleException e) {
@@ -2507,7 +2507,7 @@
     logger.atFine().log(
         "Processing submit with tip change %s (%s)", tipChange.getId(), magicBranch.cmd.getNewId());
     try (MergeOp op = mergeOpProvider.get()) {
-      op.merge(db, tipChange, user, false, new SubmitInput(), false);
+      op.merge(tipChange, user, false, new SubmitInput(), false);
     }
   }
 
diff --git a/java/com/google/gerrit/server/restapi/change/GetRevisionActions.java b/java/com/google/gerrit/server/restapi/change/GetRevisionActions.java
index 03b95a6..b0b49a3 100644
--- a/java/com/google/gerrit/server/restapi/change/GetRevisionActions.java
+++ b/java/com/google/gerrit/server/restapi/change/GetRevisionActions.java
@@ -19,7 +19,6 @@
 import com.google.gerrit.extensions.common.ActionInfo;
 import com.google.gerrit.extensions.restapi.ETagView;
 import com.google.gerrit.extensions.restapi.Response;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.change.ActionJson;
 import com.google.gerrit.server.change.ChangeResource;
@@ -42,19 +41,16 @@
 public class GetRevisionActions implements ETagView<RevisionResource> {
   private final ActionJson delegate;
   private final Config config;
-  private final Provider<ReviewDb> dbProvider;
   private final Provider<MergeSuperSet> mergeSuperSet;
   private final ChangeResource.Factory changeResourceFactory;
 
   @Inject
   GetRevisionActions(
       ActionJson delegate,
-      Provider<ReviewDb> dbProvider,
       Provider<MergeSuperSet> mergeSuperSet,
       ChangeResource.Factory changeResourceFactory,
       @GerritServerConfig Config config) {
     this.delegate = delegate;
-    this.dbProvider = dbProvider;
     this.mergeSuperSet = mergeSuperSet;
     this.changeResourceFactory = changeResourceFactory;
     this.config = config;
@@ -72,8 +68,7 @@
     try {
       rsrc.getChangeResource().prepareETag(h, user);
       h.putBoolean(MergeSuperSet.wholeTopicEnabled(config));
-      ReviewDb db = dbProvider.get();
-      ChangeSet cs = mergeSuperSet.get().completeChangeSet(db, rsrc.getChange(), user);
+      ChangeSet cs = mergeSuperSet.get().completeChangeSet(rsrc.getChange(), user);
       for (ChangeData cd : cs.changes()) {
         changeResourceFactory.create(cd.notes(), user).prepareETag(h, user);
       }
diff --git a/java/com/google/gerrit/server/restapi/change/ListRobotComments.java b/java/com/google/gerrit/server/restapi/change/ListRobotComments.java
index 99366aa..c13b1e7 100644
--- a/java/com/google/gerrit/server/restapi/change/ListRobotComments.java
+++ b/java/com/google/gerrit/server/restapi/change/ListRobotComments.java
@@ -18,7 +18,6 @@
 import com.google.gerrit.extensions.common.RobotCommentInfo;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.reviewdb.client.RobotComment;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.CommentsUtil;
 import com.google.gerrit.server.change.RevisionResource;
 import com.google.gerrit.server.permissions.PermissionBackendException;
@@ -31,14 +30,11 @@
 
 @Singleton
 public class ListRobotComments implements RestReadView<RevisionResource> {
-  protected final Provider<ReviewDb> db;
   protected final Provider<CommentJson> commentJson;
   protected final CommentsUtil commentsUtil;
 
   @Inject
-  ListRobotComments(
-      Provider<ReviewDb> db, Provider<CommentJson> commentJson, CommentsUtil commentsUtil) {
-    this.db = db;
+  ListRobotComments(Provider<CommentJson> commentJson, CommentsUtil commentsUtil) {
     this.commentJson = commentJson;
     this.commentsUtil = commentsUtil;
   }
diff --git a/java/com/google/gerrit/server/restapi/change/PreviewSubmit.java b/java/com/google/gerrit/server/restapi/change/PreviewSubmit.java
index 18e86d1..794cf6c 100644
--- a/java/com/google/gerrit/server/restapi/change/PreviewSubmit.java
+++ b/java/com/google/gerrit/server/restapi/change/PreviewSubmit.java
@@ -26,7 +26,6 @@
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.ChangeUtil;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.change.ArchiveFormat;
@@ -61,7 +60,6 @@
 public class PreviewSubmit implements RestReadView<RevisionResource> {
   private static final int MAX_DEFAULT_BUNDLE_SIZE = 100 * 1024 * 1024;
 
-  private final Provider<ReviewDb> dbProvider;
   private final Provider<MergeOp> mergeOpProvider;
   private final AllowedFormats allowedFormats;
   private int maxBundleSize;
@@ -74,11 +72,9 @@
 
   @Inject
   PreviewSubmit(
-      Provider<ReviewDb> dbProvider,
       Provider<MergeOp> mergeOpProvider,
       AllowedFormats allowedFormats,
       @GerritServerConfig Config cfg) {
-    this.dbProvider = dbProvider;
     this.mergeOpProvider = mergeOpProvider;
     this.allowedFormats = allowedFormats;
     this.maxBundleSize = cfg.getInt("download", "maxBundleSize", MAX_DEFAULT_BUNDLE_SIZE);
@@ -116,14 +112,13 @@
   private BinaryResult getBundles(RevisionResource rsrc, ArchiveFormat f)
       throws OrmException, RestApiException, UpdateException, IOException, ConfigInvalidException,
           PermissionBackendException {
-    ReviewDb db = dbProvider.get();
     IdentifiedUser caller = rsrc.getUser().asIdentifiedUser();
     Change change = rsrc.getChange();
 
     @SuppressWarnings("resource") // Returned BinaryResult takes ownership and handles closing.
     MergeOp op = mergeOpProvider.get();
     try {
-      op.merge(db, change, caller, false, new SubmitInput(), true);
+      op.merge(change, caller, false, new SubmitInput(), true);
       BinaryResult bin = new SubmitPreviewResult(op, f, maxBundleSize);
       bin.disableGzip()
           .setContentType(f.getMimeType())
diff --git a/java/com/google/gerrit/server/restapi/change/Submit.java b/java/com/google/gerrit/server/restapi/change/Submit.java
index 78aa3e1..a0e9d70 100644
--- a/java/com/google/gerrit/server/restapi/change/Submit.java
+++ b/java/com/google/gerrit/server/restapi/change/Submit.java
@@ -36,7 +36,6 @@
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RevId;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.ChangeUtil;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
@@ -107,7 +106,6 @@
     }
   }
 
-  private final Provider<ReviewDb> dbProvider;
   private final GitRepositoryManager repoManager;
   private final PermissionBackend permissionBackend;
   private final ChangeData.Factory changeDataFactory;
@@ -128,7 +126,6 @@
 
   @Inject
   Submit(
-      Provider<ReviewDb> dbProvider,
       GitRepositoryManager repoManager,
       PermissionBackend permissionBackend,
       ChangeData.Factory changeDataFactory,
@@ -140,7 +137,6 @@
       Provider<InternalChangeQuery> queryProvider,
       PatchSetUtil psUtil,
       ProjectCache projectCache) {
-    this.dbProvider = dbProvider;
     this.repoManager = repoManager;
     this.permissionBackend = permissionBackend;
     this.changeDataFactory = changeDataFactory;
@@ -212,8 +208,7 @@
     }
 
     try (MergeOp op = mergeOpProvider.get()) {
-      ReviewDb db = dbProvider.get();
-      op.merge(db, change, submitter, true, input, false);
+      op.merge(change, submitter, true, input, false);
       try {
         change = changeNotesFactory.createChecked(change.getProject(), change.getId()).getChange();
       } catch (NoSuchChangeException e) {
@@ -321,7 +316,6 @@
       throw new OrmRuntimeException("Could not determine problems for the change", e);
     }
 
-    ReviewDb db = dbProvider.get();
     ChangeData cd = changeDataFactory.create(resource.getNotes());
     try {
       MergeOp.checkSubmitRule(cd, false);
@@ -334,7 +328,7 @@
 
     ChangeSet cs;
     try {
-      cs = mergeSuperSet.get().completeChangeSet(db, cd.change(), resource.getUser());
+      cs = mergeSuperSet.get().completeChangeSet(cd.change(), resource.getUser());
     } catch (OrmException | IOException | PermissionBackendException e) {
       throw new OrmRuntimeException(
           "Could not determine complete set of changes to be submitted", e);
diff --git a/java/com/google/gerrit/server/restapi/change/SubmittedTogether.java b/java/com/google/gerrit/server/restapi/change/SubmittedTogether.java
index fa40329..f6bd8ad 100644
--- a/java/com/google/gerrit/server/restapi/change/SubmittedTogether.java
+++ b/java/com/google/gerrit/server/restapi/change/SubmittedTogether.java
@@ -28,7 +28,6 @@
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.RestReadView;
 import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.change.ChangeJson;
 import com.google.gerrit.server.change.ChangeResource;
 import com.google.gerrit.server.change.WalkSorter;
@@ -62,7 +61,6 @@
       Comparator.comparing(ChangeData::project).thenComparing(cd -> cd.getId().id, reverseOrder());
 
   private final ChangeJson.Factory json;
-  private final Provider<ReviewDb> dbProvider;
   private final Provider<InternalChangeQuery> queryProvider;
   private final Provider<MergeSuperSet> mergeSuperSet;
   private final Provider<WalkSorter> sorter;
@@ -89,12 +87,10 @@
   @Inject
   SubmittedTogether(
       ChangeJson.Factory json,
-      Provider<ReviewDb> dbProvider,
       Provider<InternalChangeQuery> queryProvider,
       Provider<MergeSuperSet> mergeSuperSet,
       Provider<WalkSorter> sorter) {
     this.json = json;
-    this.dbProvider = dbProvider;
     this.queryProvider = queryProvider;
     this.mergeSuperSet = mergeSuperSet;
     this.sorter = sorter;
@@ -129,8 +125,7 @@
       int hidden;
 
       if (c.getStatus().isOpen()) {
-        ChangeSet cs =
-            mergeSuperSet.get().completeChangeSet(dbProvider.get(), c, resource.getUser());
+        ChangeSet cs = mergeSuperSet.get().completeChangeSet(c, resource.getUser());
         cds = ensureRequiredDataIsLoaded(cs.changes().asList());
         hidden = cs.nonVisibleChanges().size();
       } else if (c.getStatus().asChangeStatus() == ChangeStatus.MERGED) {
diff --git a/java/com/google/gerrit/server/submit/LocalMergeSuperSetComputation.java b/java/com/google/gerrit/server/submit/LocalMergeSuperSetComputation.java
index 2481fcf..832c3879 100644
--- a/java/com/google/gerrit/server/submit/LocalMergeSuperSetComputation.java
+++ b/java/com/google/gerrit/server/submit/LocalMergeSuperSetComputation.java
@@ -28,7 +28,6 @@
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.reviewdb.client.Branch;
 import com.google.gerrit.reviewdb.client.Project;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.permissions.ChangePermission;
 import com.google.gerrit.server.permissions.PermissionBackend;
@@ -109,7 +108,7 @@
 
   @Override
   public ChangeSet completeWithoutTopic(
-      ReviewDb db, MergeOpRepoManager orm, ChangeSet changeSet, CurrentUser user)
+      MergeOpRepoManager orm, ChangeSet changeSet, CurrentUser user)
       throws OrmException, IOException, PermissionBackendException {
     Collection<ChangeData> visibleChanges = new ArrayList<>();
     Collection<ChangeData> nonVisibleChanges = new ArrayList<>();
diff --git a/java/com/google/gerrit/server/submit/MergeOp.java b/java/com/google/gerrit/server/submit/MergeOp.java
index 416a809..5b25444 100644
--- a/java/com/google/gerrit/server/submit/MergeOp.java
+++ b/java/com/google/gerrit/server/submit/MergeOp.java
@@ -52,7 +52,6 @@
 import com.google.gerrit.reviewdb.client.ChangeMessage;
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.Project;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.ChangeMessagesUtil;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.InternalUser;
@@ -239,7 +238,6 @@
 
   private MergeOpRepoManager orm;
   private CommitStatus commitStatus;
-  private ReviewDb db;
   private SubmitInput submitInput;
   private ListMultimap<RecipientType, Account.Id> accountsToNotify;
   private Set<Project.NameKey> allProjects;
@@ -427,7 +425,6 @@
    * topic or via superproject subscriptions. All affected changes are integrated using the projects
    * integration strategy.
    *
-   * @param db the review database.
    * @param change the change to be merged.
    * @param caller the identity of the caller
    * @param checkSubmitRules whether the prolog submit rules should be evaluated
@@ -438,7 +435,6 @@
    * @throws IOException an error occurred reading from NoteDb.
    */
   public void merge(
-      ReviewDb db,
       Change change,
       IdentifiedUser caller,
       boolean checkSubmitRules,
@@ -451,7 +447,6 @@
     this.dryrun = dryrun;
     this.caller = caller;
     this.ts = TimeUtil.nowTs();
-    this.db = db;
     this.submissionId = new RequestId(change.getId().toString());
 
     try (TraceContext traceContext =
@@ -461,7 +456,7 @@
       logger.atFine().log("Beginning integration of %s", change);
       try {
         ChangeSet indexBackedChangeSet =
-            mergeSuperSet.setMergeOpRepoManager(orm).completeChangeSet(db, change, caller);
+            mergeSuperSet.setMergeOpRepoManager(orm).completeChangeSet(change, caller);
         checkState(
             indexBackedChangeSet.ids().contains(change.getId()),
             "change %s missing from %s",
@@ -536,7 +531,7 @@
       orm.close();
     }
     orm = ormProvider.get();
-    orm.setContext(db, ts, caller);
+    orm.setContext(ts, caller);
   }
 
   private ChangeSet reloadChanges(ChangeSet changeSet) {
@@ -669,7 +664,6 @@
         SubmitStrategy strategy =
             submitStrategyFactory.create(
                 submitting.submitType(),
-                db,
                 or.rw,
                 or.canMergeFlag,
                 getAlreadyAccepted(or, ob.oldTip),
diff --git a/java/com/google/gerrit/server/submit/MergeOpRepoManager.java b/java/com/google/gerrit/server/submit/MergeOpRepoManager.java
index 72d8a14..cbaad6a 100644
--- a/java/com/google/gerrit/server/submit/MergeOpRepoManager.java
+++ b/java/com/google/gerrit/server/submit/MergeOpRepoManager.java
@@ -20,7 +20,6 @@
 import com.google.gerrit.reviewdb.client.Branch;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.git.CodeReviewCommit;
 import com.google.gerrit.server.git.CodeReviewCommit.CodeReviewRevWalk;
@@ -105,7 +104,7 @@
     }
 
     public BatchUpdate getUpdate() {
-      checkState(db != null, "call setContext before getUpdate");
+      checkState(caller != null, "call setContext before getUpdate");
       if (update == null) {
         update =
             batchUpdateFactory
@@ -157,7 +156,6 @@
   private final GitRepositoryManager repoManager;
   private final ProjectCache projectCache;
 
-  private ReviewDb db;
   private Timestamp ts;
   private IdentifiedUser caller;
 
@@ -175,8 +173,7 @@
     openRepos = new HashMap<>();
   }
 
-  public void setContext(ReviewDb db, Timestamp ts, IdentifiedUser caller) {
-    this.db = db;
+  public void setContext(Timestamp ts, IdentifiedUser caller) {
     this.ts = ts;
     this.caller = caller;
   }
diff --git a/java/com/google/gerrit/server/submit/MergeSuperSet.java b/java/com/google/gerrit/server/submit/MergeSuperSet.java
index ebc34a3..87ce6d4 100644
--- a/java/com/google/gerrit/server/submit/MergeSuperSet.java
+++ b/java/com/google/gerrit/server/submit/MergeSuperSet.java
@@ -22,7 +22,6 @@
 import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.logging.TraceContext;
@@ -93,7 +92,7 @@
     return this;
   }
 
-  public ChangeSet completeChangeSet(ReviewDb db, Change change, CurrentUser user)
+  public ChangeSet completeChangeSet(Change change, CurrentUser user)
       throws IOException, OrmException, PermissionBackendException {
     try {
       if (orm == null) {
@@ -120,10 +119,10 @@
 
       ChangeSet changeSet = new ChangeSet(cd, visible);
       if (wholeTopicEnabled(cfg)) {
-        return completeChangeSetIncludingTopics(db, changeSet, user);
+        return completeChangeSetIncludingTopics(changeSet, user);
       }
       try (TraceContext traceContext = PluginContext.newTrace(mergeSuperSetComputation)) {
-        return mergeSuperSetComputation.get().completeWithoutTopic(db, orm, changeSet, user);
+        return mergeSuperSetComputation.get().completeWithoutTopic(orm, changeSet, user);
       }
     } finally {
       if (closeOrm && orm != null) {
@@ -137,9 +136,8 @@
    * Completes {@code changeSet} with any additional changes from its topics
    *
    * <p>{@link #completeChangeSetIncludingTopics} calls this repeatedly, alternating with {@link
-   * MergeSuperSetComputation#completeWithoutTopic(ReviewDb, MergeOpRepoManager, ChangeSet,
-   * CurrentUser)}, to discover what additional changes should be submitted with a change until the
-   * set stops growing.
+   * MergeSuperSetComputation#completeWithoutTopic(MergeOpRepoManager, ChangeSet, CurrentUser)}, to
+   * discover what additional changes should be submitted with a change until the set stops growing.
    *
    * <p>{@code topicsSeen} and {@code visibleTopicsSeen} keep track of topics already explored to
    * avoid wasted work.
@@ -182,8 +180,7 @@
     return new ChangeSet(visibleChanges, nonVisibleChanges);
   }
 
-  private ChangeSet completeChangeSetIncludingTopics(
-      ReviewDb db, ChangeSet changeSet, CurrentUser user)
+  private ChangeSet completeChangeSetIncludingTopics(ChangeSet changeSet, CurrentUser user)
       throws IOException, OrmException, PermissionBackendException {
     Set<String> topicsSeen = new HashSet<>();
     Set<String> visibleTopicsSeen = new HashSet<>();
@@ -196,7 +193,7 @@
     do {
       oldSeen = seen;
       try (TraceContext traceContext = PluginContext.newTrace(mergeSuperSetComputation)) {
-        changeSet = mergeSuperSetComputation.get().completeWithoutTopic(db, orm, changeSet, user);
+        changeSet = mergeSuperSetComputation.get().completeWithoutTopic(orm, changeSet, user);
       }
       changeSet = topicClosure(changeSet, user, topicsSeen, visibleTopicsSeen);
       seen = topicsSeen.size() + visibleTopicsSeen.size();
diff --git a/java/com/google/gerrit/server/submit/MergeSuperSetComputation.java b/java/com/google/gerrit/server/submit/MergeSuperSetComputation.java
index dd9ad9b..a487c95 100644
--- a/java/com/google/gerrit/server/submit/MergeSuperSetComputation.java
+++ b/java/com/google/gerrit/server/submit/MergeSuperSetComputation.java
@@ -15,7 +15,6 @@
 package com.google.gerrit.server.submit;
 
 import com.google.gerrit.extensions.annotations.ExtensionPoint;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gwtorm.server.OrmException;
@@ -41,13 +40,11 @@
    * <p>This method is invoked iteratively while new changes to be submitted together are discovered
    * by expanding the topics of the changes. This method must not do any topic expansion on its own.
    *
-   * @param db {@link ReviewDb} instance
    * @param orm {@link MergeOpRepoManager} that should be used to access repositories
    * @param changeSet A set of changes for which it is known that they should be submitted together
    * @param user The user for which the visibility checks should be performed
    * @return the completed set of changes that should be submitted together
    */
-  ChangeSet completeWithoutTopic(
-      ReviewDb db, MergeOpRepoManager orm, ChangeSet changeSet, CurrentUser user)
+  ChangeSet completeWithoutTopic(MergeOpRepoManager orm, ChangeSet changeSet, CurrentUser user)
       throws OrmException, IOException, PermissionBackendException;
 }
diff --git a/java/com/google/gerrit/server/submit/SubmitStrategy.java b/java/com/google/gerrit/server/submit/SubmitStrategy.java
index 6511d25..16c2b27 100644
--- a/java/com/google/gerrit/server/submit/SubmitStrategy.java
+++ b/java/com/google/gerrit/server/submit/SubmitStrategy.java
@@ -25,7 +25,6 @@
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.Branch;
 import com.google.gerrit.reviewdb.client.Change;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.ApprovalsUtil;
 import com.google.gerrit.server.ChangeMessagesUtil;
 import com.google.gerrit.server.GerritPersonIdent;
@@ -91,7 +90,6 @@
           IdentifiedUser caller,
           MergeTip mergeTip,
           RevFlag canMergeFlag,
-          ReviewDb db,
           Set<RevCommit> alreadyAccepted,
           Set<CodeReviewCommit> incoming,
           RequestId submissionId,
@@ -124,7 +122,6 @@
     final IdentifiedUser caller;
     final MergeTip mergeTip;
     final RevFlag canMergeFlag;
-    final ReviewDb db;
     final Set<RevCommit> alreadyAccepted;
     final RequestId submissionId;
     final SubmitType submitType;
@@ -163,7 +160,6 @@
         @Assisted IdentifiedUser caller,
         @Assisted MergeTip mergeTip,
         @Assisted RevFlag canMergeFlag,
-        @Assisted ReviewDb db,
         @Assisted Set<RevCommit> alreadyAccepted,
         @Assisted Set<CodeReviewCommit> incoming,
         @Assisted RequestId submissionId,
@@ -194,7 +190,6 @@
       this.caller = caller;
       this.mergeTip = mergeTip;
       this.canMergeFlag = canMergeFlag;
-      this.db = db;
       this.alreadyAccepted = alreadyAccepted;
       this.submissionId = submissionId;
       this.submitType = submitType;
diff --git a/java/com/google/gerrit/server/submit/SubmitStrategyFactory.java b/java/com/google/gerrit/server/submit/SubmitStrategyFactory.java
index 7f70f37..0a92d61 100644
--- a/java/com/google/gerrit/server/submit/SubmitStrategyFactory.java
+++ b/java/com/google/gerrit/server/submit/SubmitStrategyFactory.java
@@ -21,7 +21,6 @@
 import com.google.gerrit.extensions.client.SubmitType;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.Branch;
-import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.git.CodeReviewCommit;
 import com.google.gerrit.server.git.CodeReviewCommit.CodeReviewRevWalk;
@@ -48,7 +47,6 @@
 
   public SubmitStrategy create(
       SubmitType submitType,
-      ReviewDb db,
       CodeReviewRevWalk rw,
       RevFlag canMergeFlag,
       Set<RevCommit> alreadyAccepted,
@@ -72,7 +70,6 @@
             caller,
             mergeTip,
             canMergeFlag,
-            db,
             alreadyAccepted,
             incoming,
             submissionId,
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/SubmitResolvingMergeCommitIT.java b/javatests/com/google/gerrit/acceptance/rest/change/SubmitResolvingMergeCommitIT.java
index b1db9f0..2a19d5e 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/SubmitResolvingMergeCommitIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/SubmitResolvingMergeCommitIT.java
@@ -307,7 +307,7 @@
   private void assertChangeSetMergeable(ChangeData change, boolean expected)
       throws MissingObjectException, IncorrectObjectTypeException, IOException, OrmException,
           PermissionBackendException {
-    ChangeSet cs = mergeSuperSet.get().completeChangeSet(db, change.change(), user(admin));
+    ChangeSet cs = mergeSuperSet.get().completeChangeSet(change.change(), user(admin));
     assertThat(submit.unmergeableChanges(cs).isEmpty()).isEqualTo(expected);
   }