diff --git a/Cargo.toml b/Cargo.toml
index e79cd38d..bffe198f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ members = ["codegen", "examples", "performance_measurement", "performance_measur
 
 [package]
 name = "worktable"
-version = "0.6.1"
+version = "0.6.2"
 edition = "2024"
 authors = ["Handy-caT"]
 license = "MIT"
@@ -25,9 +25,9 @@ lockfree = { version = "0.5.1" }
 worktable_codegen = { path = "codegen", version = "0.6.0" }
 futures = "0.3.30"
 uuid = { version = "1.10.0", features = ["v4", "v7"] }
-data_bucket = "0.2.4"
+data_bucket = "0.2.5"
 # data_bucket = { git = "https://github.com/pathscale/DataBucket", branch = "main" }
-# data_bucket = { path = "../DataBucket", version = "0.2.3" }
+# data_bucket = { path = "../DataBucket", version = "0.2.4" }
 performance_measurement_codegen = { path = "performance_measurement/codegen", version = "0.1.0", optional = true }
 performance_measurement = { path = "performance_measurement", version = "0.1.0", optional = true }
 indexset = { version = "0.12.2", features = ["concurrent", "cdc", "multimap"] }
diff --git a/src/persistence/operation.rs b/src/persistence/operation.rs
index 3a9f0731..cc359cd6 100644
--- a/src/persistence/operation.rs
+++ b/src/persistence/operation.rs
@@ -1,10 +1,8 @@
+use std::cmp::Ordering;
 use std::collections::HashMap;
 use std::fmt::Debug;
+use std::hash::{Hash, Hasher};
 
-use crate::persistence::space::{BatchChangeEvent, BatchData};
-use crate::persistence::task::QueueInnerRow;
-use crate::prelude::*;
-use crate::prelude::{From, Order, SelectQueryExecutor};
 use data_bucket::page::PageId;
 use data_bucket::{Link, SizeMeasurable};
 use derive_more::Display;
@@ -14,22 +12,13 @@ use rkyv::{Archive, Deserialize, Serialize};
 use uuid::Uuid;
 use worktable_codegen::{worktable, MemStat};
 
+use crate::persistence::space::{BatchChangeEvent, BatchData};
+use crate::persistence::task::QueueInnerRow;
+use crate::prelude::*;
+use crate::prelude::{From, Order, SelectQueryExecutor};
+
 /// Represents page's identifier. Is unique within the table bounds
-#[derive(
-    Archive,
-    Copy,
-    Clone,
-    Deserialize,
-    Debug,
-    Display,
-    Eq,
-    From,
-    Hash,
-    Ord,
-    PartialEq,
-    PartialOrd,
-    Serialize,
-)]
+#[derive(Archive, Copy, Clone, Deserialize, Debug, Display, From, Serialize)]
 #[rkyv(derive(Debug, PartialOrd, PartialEq, Eq, Ord))]
 pub enum OperationId {
     #[from]
@@ -37,6 +26,41 @@ pub enum OperationId {
     Multi(Uuid),
 }
 
+impl OperationId {
+    fn get_id(&self) -> Uuid {
+        match self {
+            OperationId::Single(id) => *id,
+            OperationId::Multi(id) => *id,
+        }
+    }
+}
+
+impl Hash for OperationId {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        Hash::hash(&self.get_id(), state)
+    }
+}
+
+impl PartialEq for OperationId {
+    fn eq(&self, other: &Self) -> bool {
+        self.get_id().eq(&other.get_id())
+    }
+}
+
+impl Eq for OperationId {}
+
+impl PartialOrd for OperationId {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for OperationId {
+    fn cmp(&self, other: &Self) -> Ordering {
+        self.get_id().cmp(&other.get_id())
+    }
+}
+
 impl SizeMeasurable for OperationId {
     fn aligned_size(&self) -> usize {
         Uuid::default().aligned_size()
diff --git a/src/persistence/space/index/mod.rs b/src/persistence/space/index/mod.rs
index 60bbc2ae..011eee5a 100644
--- a/src/persistence/space/index/mod.rs
+++ b/src/persistence/space/index/mod.rs
@@ -438,6 +438,7 @@ where
                     let page_to_update = if let Some(page) = page {
                         page
                     } else {
+                        //println!("Trying to parse page {}", page_index);
                         let page = parse_page::<IndexPage<T>, INNER_PAGE_SIZE>(
                             &mut self.index_file,
                             page_index.into(),
diff --git a/src/persistence/space/index/table_of_contents.rs b/src/persistence/space/index/table_of_contents.rs
index 43121838..fb1da70f 100644
--- a/src/persistence/space/index/table_of_contents.rs
+++ b/src/persistence/space/index/table_of_contents.rs
@@ -1,3 +1,4 @@
+use std::fmt::Debug;
 use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::Arc;
 
@@ -24,7 +25,7 @@ pub struct IndexTableOfContents<T: Ord + Eq, const DATA_LENGTH: u32> {
 
 impl<T, const DATA_LENGTH: u32> IndexTableOfContents<T, DATA_LENGTH>
 where
-    T: SizeMeasurable + Ord + Eq,
+    T: Debug + SizeMeasurable + Ord + Eq,
 {
     pub fn new(space_id: SpaceId, next_page_id: Arc<AtomicU32>) -> Self {
         let page_id = next_page_id.fetch_add(1, Ordering::Relaxed);
@@ -114,9 +115,19 @@ where
         self.pages.iter().flat_map(|v| v.inner.iter())
     }
 
-    pub fn update_key(&mut self, old_key: &T, new_key: T) {
+    pub fn update_key(&mut self, old_key: &T, new_key: T)
+    where
+        T: Clone + Debug,
+    {
         let page = self.get_current_page_mut();
-        page.inner.update_key(old_key, new_key);
+        if page.inner.update_key(old_key, new_key.clone()).is_none() {
+            for page in self.pages.iter_mut() {
+                if page.inner.update_key(old_key, new_key.clone()).is_some() {
+                    return;
+                }
+            }
+            panic!("Page with key {:?} not found", old_key);
+        }
     }
 
     pub fn pop_empty_page_id(&mut self) -> Option<PageId> {
@@ -166,15 +177,15 @@ where
                 })
             } else {
                 let mut table_of_contents_pages = vec![page];
-                let mut index = 2;
+                let mut index = table_of_contents_pages[0].header.next_id.into();
                 let mut ind = false;
 
                 while !ind {
                     let page =
                         parse_page::<TableOfContentsPage<T>, DATA_LENGTH>(file, index).await?;
                     ind = page.header.next_id.is_empty();
+                    index = page.header.next_id.into();
                     table_of_contents_pages.push(page);
-                    index += 1;
                 }
 
                 Ok(Self {
diff --git a/src/persistence/space/index/util.rs b/src/persistence/space/index/util.rs
index cb4c39ce..264e2ec4 100644
--- a/src/persistence/space/index/util.rs
+++ b/src/persistence/space/index/util.rs
@@ -3,6 +3,7 @@ use data_bucket::{
     GeneralHeader, GeneralPage, IndexPage, Link, PageType, SizeMeasurable, UnsizedIndexPage,
     VariableSizeMeasurable,
 };
+use std::fmt::Debug;
 use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::Arc;
 
@@ -14,7 +15,7 @@ pub fn map_index_pages_to_toc_and_general<T, const DATA_LENGTH: u32>(
     Vec<GeneralPage<IndexPage<T>>>,
 )
 where
-    T: Clone + Default + Ord + Eq + SizeMeasurable,
+    T: Debug + Clone + Default + Ord + Eq + SizeMeasurable,
 {
     let mut general_index_pages = vec![];
     let next_page_id = Arc::new(AtomicU32::new(1));
@@ -44,7 +45,7 @@ pub fn map_unsized_index_pages_to_toc_and_general<T, const DATA_LENGTH: u32>(
     Vec<GeneralPage<UnsizedIndexPage<T, DATA_LENGTH>>>,
 )
 where
-    T: Clone + Default + Ord + Eq + SizeMeasurable + VariableSizeMeasurable,
+    T: Clone + Debug + Default + Ord + Eq + SizeMeasurable + VariableSizeMeasurable,
 {
     let mut general_index_pages = vec![];
     let next_page_id = Arc::new(AtomicU32::new(1));
diff --git a/src/persistence/task.rs b/src/persistence/task.rs
index b8c7037d..3af753f0 100644
--- a/src/persistence/task.rs
+++ b/src/persistence/task.rs
@@ -30,6 +30,8 @@ worktable! (
     },
 );
 
+const MAX_PAGE_AMOUNT: usize = 16;
+
 pub struct QueueAnalyzer<PrimaryKeyGenState, PrimaryKey, SecondaryKeys> {
     operations: OptimizedVec<Operation<PrimaryKeyGenState, PrimaryKey, SecondaryKeys>>,
     queue_inner_wt: QueueInnerWorkTable,
@@ -96,54 +98,87 @@ where
         PrimaryKey: Clone,
         SecondaryKeys: Clone,
     {
-        let ops_rows = self
-            .queue_inner_wt
-            .select_by_operation_id(op_id)
-            .execute()?;
-
         let mut ops_set = HashSet::new();
+        let mut used_page_ids = HashSet::new();
 
-        let used_page_ids = ops_rows.iter().map(|r| r.page_id).collect::<HashSet<_>>();
-        // We collect all ops available for pages that are used in our current op_id
-        for page_id in used_page_ids.iter() {
-            let page_ops = self.queue_inner_wt.select_by_page_id(*page_id).execute()?;
-            ops_set.extend(page_ops.into_iter().map(|r| r.operation_id));
-        }
-        // After we need to find out if multi ops are using same pages, and if not,
-        // we need to find the first multi op that blocks batch update by using
-        // another page.
-        let mut block_op_id = None;
-        for op_id in ops_set.iter().filter(|op_id| match op_id {
-            OperationId::Single(_) => false,
-            OperationId::Multi(_) => true,
-        }) {
-            let rows = self
+        let mut next_op_id = op_id;
+        let mut no_more_ops = false;
+        while used_page_ids.len() < MAX_PAGE_AMOUNT && !no_more_ops {
+            let ops_rows = self
                 .queue_inner_wt
-                .select_by_operation_id(*op_id)
+                .select_by_operation_id(next_op_id)
                 .execute()?;
-            let pages = rows.iter().map(|r| r.page_id).collect::<HashSet<_>>();
-            // if pages used by multi op are not available is used_page_ids set, it's blocker op.
-            for page in pages.iter() {
-                if !used_page_ids.contains(page) {
-                    if let Some(block_op_id) = block_op_id.as_mut() {
-                        if *block_op_id > *op_id {
-                            *block_op_id = *op_id
+            match next_op_id {
+                OperationId::Single(_) => {
+                    let page_id = ops_rows
+                        .first()
+                        .expect("at least one row should be available as operation exists")
+                        .page_id;
+                    used_page_ids.insert(page_id);
+                    let page_ops = self.queue_inner_wt.select_by_page_id(page_id).execute()?;
+                    let max_op_id = &mut next_op_id;
+                    ops_set.extend(page_ops.into_iter().map(move |r| {
+                        if r.operation_id > *max_op_id {
+                            *max_op_id = r.operation_id
                         }
-                    } else {
-                        block_op_id = Some(*op_id)
+                        r.operation_id
+                    }));
+                }
+                OperationId::Multi(_) => {
+                    let mut ops_set_to_extend = HashSet::new();
+                    used_page_ids.extend(ops_rows.iter().map(|r| r.page_id));
+                    for page_id in ops_rows.iter().map(|r| r.page_id) {
+                        let page_ops = self.queue_inner_wt.select_by_page_id(page_id).execute()?;
+                        ops_set_to_extend.extend(page_ops.into_iter().map(|r| r.operation_id));
                     }
+                    let mut block_op_id = None;
+                    for op_id in ops_set_to_extend.iter().filter(|op_id| match op_id {
+                        OperationId::Single(_) => false,
+                        OperationId::Multi(_) => true,
+                    }) {
+                        let rows = self
+                            .queue_inner_wt
+                            .select_by_operation_id(*op_id)
+                            .execute()?;
+                        let pages = rows.iter().map(|r| r.page_id).collect::<HashSet<_>>();
+                        // if pages used by multi op are not available is used_page_ids set, it's blocker op
+                        for page in pages.iter() {
+                            if !used_page_ids.contains(page) {
+                                if let Some(block_op_id) = block_op_id.as_mut() {
+                                    if *block_op_id > *op_id {
+                                        *block_op_id = *op_id
+                                    }
+                                } else {
+                                    block_op_id = Some(*op_id)
+                                }
+                            }
+                        }
+                    }
+                    // And if we found some blocker, we need to remove all ops after blocking op.
+                    let ops_set_to_extend = if let Some(block_op_id) = block_op_id {
+                        ops_set_to_extend
+                            .into_iter()
+                            .filter(|op_id| *op_id >= block_op_id)
+                            .collect()
+                    } else {
+                        ops_set_to_extend
+                    };
+                    ops_set.extend(ops_set_to_extend);
+                    no_more_ops = true;
                 }
+            };
+            let mut range = self
+                .queue_inner_wt
+                .0
+                .indexes
+                .operation_id_idx
+                .range(next_op_id..);
+            if let Some((id, _)) = range.nth(1) {
+                next_op_id = *id;
+            } else {
+                no_more_ops = true
             }
         }
-        // And if we found some blocker, we need to remove all ops after blocking op.
-        let ops_set = if let Some(block_op_id) = block_op_id {
-            ops_set
-                .into_iter()
-                .filter(|op_id| *op_id >= block_op_id)
-                .collect()
-        } else {
-            ops_set
-        };
         // After this point, we have ops set ready for batch generation.
         let mut ops_pos_set = HashSet::new();
         for op_id in ops_set {
@@ -307,11 +342,11 @@ impl<PrimaryKeyGenState, PrimaryKey, SecondaryKeys>
                         tracing::warn!("Error collecting batch operation: {}", e);
                     } else {
                         let batch_op = batch_op.unwrap();
-                        // println!(
-                        //     "Batch len is {}, queue len is {}",
-                        //     batch_op.ops.len(),
-                        //     analyzer.len()
-                        // );
+                        println!(
+                            "Batch len is {}, queue len is {}",
+                            batch_op.ops.len(),
+                            analyzer.len()
+                        );
                         let res = engine.apply_batch_operation(batch_op).await;
                         if let Err(e) = res {
                             tracing::warn!(
diff --git a/tests/data/expected/persist_index_table_of_contents.wt.idx b/tests/data/expected/persist_index_table_of_contents.wt.idx
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diff --git a/tests/persistence/sync/mod.rs b/tests/persistence/sync/mod.rs
index 0edf11a9..f7bfb31c 100644
--- a/tests/persistence/sync/mod.rs
+++ b/tests/persistence/sync/mod.rs
@@ -109,7 +109,7 @@ fn test_space_insert_many_sync() {
             let table = TestSyncWorkTable::load_from_file(config.clone())
                 .await
                 .unwrap();
-            for i in 0..20 {
+            for i in 0..5_000 {
                 let pk = {
                     let row = TestSyncRow {
                         another: i,