diff --git a/java/com/google/gerrit/server/Sequences.java b/java/com/google/gerrit/server/Sequences.java
index 70a02a8..8381b5c 100644
--- a/java/com/google/gerrit/server/Sequences.java
+++ b/java/com/google/gerrit/server/Sequences.java
@@ -14,8 +14,6 @@
 
 package com.google.gerrit.server;
 
-import static com.google.common.base.Preconditions.checkArgument;
-
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.ImmutableList;
 import com.google.gerrit.metrics.Description;
@@ -29,14 +27,10 @@
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
 import com.google.gerrit.server.git.GitRepositoryManager;
-import com.google.gerrit.server.notedb.NotesMigration;
 import com.google.gerrit.server.notedb.RepoSequence;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
-import com.google.inject.Provider;
 import com.google.inject.Singleton;
-import java.util.ArrayList;
-import java.util.List;
 import org.eclipse.jgit.lib.Config;
 
 @Singleton
@@ -55,8 +49,6 @@
     GROUPS;
   }
 
-  private final Provider<ReviewDb> db;
-  private final NotesMigration migration;
   private final RepoSequence accountSeq;
   private final RepoSequence changeSeq;
   private final RepoSequence groupSeq;
@@ -65,15 +57,11 @@
   @Inject
   public Sequences(
       @GerritServerConfig Config cfg,
-      Provider<ReviewDb> db,
-      NotesMigration migration,
       GitRepositoryManager repoManager,
       GitReferenceUpdated gitRefUpdated,
       AllProjectsName allProjects,
       AllUsersName allUsers,
       MetricMaker metrics) {
-    this.db = db;
-    this.migration = migration;
 
     int accountBatchSize = cfg.getInt("noteDb", "accounts", "sequenceBatchSize", 1);
     accountSeq =
@@ -85,13 +73,15 @@
             () -> ReviewDb.FIRST_ACCOUNT_ID,
             accountBatchSize);
 
-    int gap = getChangeSequenceGap(cfg);
-    @SuppressWarnings("deprecation")
-    RepoSequence.Seed changeSeed = () -> db.get().nextChangeId() + gap;
     int changeBatchSize = cfg.getInt("noteDb", "changes", "sequenceBatchSize", 20);
     changeSeq =
         new RepoSequence(
-            repoManager, gitRefUpdated, allProjects, NAME_CHANGES, changeSeed, changeBatchSize);
+            repoManager,
+            gitRefUpdated,
+            allProjects,
+            NAME_CHANGES,
+            () -> ReviewDb.FIRST_CHANGE_ID,
+            changeBatchSize);
 
     int groupBatchSize = 1;
     groupSeq =
@@ -120,31 +110,15 @@
   }
 
   public int nextChangeId() throws OrmException {
-    if (!migration.readChangeSequence()) {
-      return nextChangeId(db.get());
-    }
     try (Timer2.Context timer = nextIdLatency.start(SequenceType.CHANGES, false)) {
       return changeSeq.next();
     }
   }
 
   public ImmutableList<Integer> nextChangeIds(int count) throws OrmException {
-    if (migration.readChangeSequence()) {
-      try (Timer2.Context timer = nextIdLatency.start(SequenceType.CHANGES, count > 1)) {
-        return changeSeq.next(count);
-      }
+    try (Timer2.Context timer = nextIdLatency.start(SequenceType.CHANGES, count > 1)) {
+      return changeSeq.next(count);
     }
-
-    if (count == 0) {
-      return ImmutableList.of();
-    }
-    checkArgument(count > 0, "count is negative: %s", count);
-    List<Integer> ids = new ArrayList<>(count);
-    ReviewDb db = this.db.get();
-    for (int i = 0; i < count; i++) {
-      ids.add(nextChangeId(db));
-    }
-    return ImmutableList.copyOf(ids);
   }
 
   public int nextGroupId() throws OrmException {
@@ -157,9 +131,4 @@
   public RepoSequence getChangeIdRepoSequence() {
     return changeSeq;
   }
-
-  @SuppressWarnings("deprecation")
-  private static int nextChangeId(ReviewDb db) throws OrmException {
-    return db.nextChangeId();
-  }
 }
diff --git a/java/com/google/gerrit/server/schema/ReviewDbSchemaCreator.java b/java/com/google/gerrit/server/schema/ReviewDbSchemaCreator.java
index 3a42f07..2113a36 100644
--- a/java/com/google/gerrit/server/schema/ReviewDbSchemaCreator.java
+++ b/java/com/google/gerrit/server/schema/ReviewDbSchemaCreator.java
@@ -42,7 +42,6 @@
 import com.google.gerrit.server.group.db.InternalGroupUpdate;
 import com.google.gerrit.server.index.group.GroupIndex;
 import com.google.gerrit.server.index.group.GroupIndexCollection;
-import com.google.gerrit.server.notedb.NotesMigration;
 import com.google.gwtorm.jdbc.JdbcExecutor;
 import com.google.gwtorm.jdbc.JdbcSchema;
 import com.google.gwtorm.server.OrmDuplicateKeyException;
@@ -72,7 +71,6 @@
 
   private final Config config;
   private final MetricMaker metricMaker;
-  private final NotesMigration migration;
   private final AllProjectsName allProjectsName;
 
   @Inject
@@ -88,7 +86,6 @@
       @GerritServerId String serverId,
       @GerritServerConfig Config config,
       MetricMaker metricMaker,
-      NotesMigration migration,
       AllProjectsName apName) {
     this(
         site.site_path,
@@ -102,7 +99,6 @@
         serverId,
         config,
         metricMaker,
-        migration,
         apName);
   }
 
@@ -118,7 +114,6 @@
       String serverId,
       Config config,
       MetricMaker metricMaker,
-      NotesMigration migration,
       AllProjectsName apName) {
     site_path = site;
     this.repoManager = repoManager;
@@ -132,7 +127,6 @@
 
     this.config = config;
     this.allProjectsName = apName;
-    this.migration = migration;
     this.metricMaker = metricMaker;
   }
 
@@ -157,8 +151,6 @@
     Sequences seqs =
         new Sequences(
             config,
-            () -> db,
-            migration,
             repoManager,
             GitReferenceUpdated.DISABLED,
             allProjectsName,