diff --git a/DocService/sources/baseConnector.js b/DocService/sources/baseConnector.js
index f1a14222..31c24da1 100644
--- a/DocService/sources/baseConnector.js
+++ b/DocService/sources/baseConnector.js
@@ -113,7 +113,6 @@ exports.insertChangesPromise = function (ctx, objChanges, docId, index, user) {
   } else {
     return exports.insertChangesPromiseCompatibility(ctx, objChanges, docId, index, user);
   }
-
 };
 function _getDateTime2(oDate) {
   return oDate.toISOString().slice(0, 19).replace('T', ' ');
@@ -127,10 +126,12 @@ function _insertChangesCallback (ctx, startIndex, objChanges, docId, index, user
   if (i === l)
     return;
 
+  const indexBytes = 4;
+  const timeBytes = 8;
   for (; i < l; ++i, ++index) {
-    //44 - length of "($1001,... $1007),"
+    //49 - length of "($1001,... $1008),"
     //4 is max utf8 bytes per symbol
-    lengthUtf8Row = 44 + 4 * (docId.length + user.id.length + user.idOriginal.length + user.username.length + objChanges[i].change.length) + 4 + 8;
+    lengthUtf8Row = 49 + 4 * (ctx.tenant.length + docId.length + user.id.length + user.idOriginal.length + user.username.length + objChanges[i].change.length) + indexBytes + timeBytes;
     if (lengthUtf8Row + lengthUtf8Current >= maxPacketSize && i > startIndex) {
       sqlCommand += ';';
       (function(tmpStart, tmpIndex) {
diff --git a/DocService/sources/oracleBaseConnector.js b/DocService/sources/oracleBaseConnector.js
index f1e632f4..1ab4dc21 100644
--- a/DocService/sources/oracleBaseConnector.js
+++ b/DocService/sources/oracleBaseConnector.js
@@ -37,7 +37,8 @@ const config = require('config');
 const connectorUtilities = require("./connectorUtilities");
 
 const configSql = config.get('services.CoAuthoring.sql');
-const cfgTableResult = config.get('services.CoAuthoring.sql.tableResult');
+const cfgTableResult = configSql.get('tableResult');
+const cfgMaxPacketSize = configSql.get('max_allowed_packet');
 
 const connectionConfiguration = {
   user: configSql.get('dbUser'),
@@ -48,7 +49,7 @@ const connectionConfiguration = {
 };
 let pool = null;
 
-oracledb.fetchAsString = [ oracledb.NCLOB ];
+oracledb.fetchAsString = [ oracledb.NCLOB, oracledb.CLOB ];
 oracledb.autoCommit = true;
 
 function columnsToLowercase(rows) {
@@ -67,19 +68,6 @@ function columnsToLowercase(rows) {
   return formattedRows;
 }
 
-function reconfigureParametersBinding(parameters) {
-  if (!parameters) {
-    return {};
-  }
-
-  const objectConfiguration = {};
-  for (const index in parameters) {
-    objectConfiguration[`:${index}`] = parameters[index];
-  }
-
-  return objectConfiguration;
-}
-
 async function sqlQuery(ctx, sqlCommand, callbackFunction, opt_noModifyRes, opt_noLog, opt_values) {
   // Query must not have any ';' in oracle connector.
   const correctedSql = sqlCommand.replace(/;/g, '');
@@ -97,29 +85,32 @@ async function sqlQuery(ctx, sqlCommand, callbackFunction, opt_noModifyRes, opt_
           ctx.logger.error('sqlQuery error sqlCommand: %s: %s', correctedSql, error.stack);
         }
 
-        connection.close();
         callbackFunction?.(error);
 
         return;
       }
 
-      let output = { rows: [], affectedRows: 0 };
-      if (result?.rowsAffected) {
-        output = { affectedRows: result.rowsAffected };
-      }
+      connection.close();
 
-      if (result?.rows) {
-        output = !opt_noModifyRes ? columnsToLowercase(result.rows) : result.rows;
+      let output = { rows: [], affectedRows: 0 };
+      if (!opt_noModifyRes) {
+        if (result?.rowsAffected) {
+          output = { affectedRows: result.rowsAffected };
+        }
+
+        if (result?.rows) {
+          output = columnsToLowercase(result.rows);
+        }
+      } else {
+        output = result;
       }
 
       callbackFunction?.(error, output);
     };
 
-    const bondedValues = reconfigureParametersBinding(opt_values);
+    const bondedValues = opt_values ?? [];
     const outputFormat = { outFormat: !opt_noModifyRes ? oracledb.OUT_FORMAT_OBJECT : oracledb.OUT_FORMAT_ARRAY };
     connection.execute(correctedSql, bondedValues, outputFormat, handler);
-
-    connection.close();
   } catch (error) {
     if (!opt_noLog) {
       ctx.logger.error('sqlQuery error while pool manipulation: %s', error.stack);
@@ -162,18 +153,11 @@ function upsert(ctx, task, opt_updateUserIndex) {
     }
 
     const dateNow = new Date();
+
     const values = [];
-    const valuesPlaceholder = [
-      addSqlParameter(task.tenant, values),
-      addSqlParameter(task.key, values),
-      addSqlParameter(task.status, values),
-      addSqlParameter(task.statusInfo, values),
-      addSqlParameter(dateNow, values),
-      addSqlParameter(task.userIndex, values),
-      addSqlParameter(task.changeId, values),
-      addSqlParameter(cbInsert, values),
-      addSqlParameter(task.baseurl, values)
-    ];
+    const tenant = addSqlParameter(task.tenant, values);
+    const id = addSqlParameter(task.key, values);
+    const lastOpenDate = addSqlParameter(dateNow, values);
 
     let callback = '';
     if (task.callback) {
@@ -192,12 +176,25 @@ function upsert(ctx, task, opt_updateUserIndex) {
       userIndex = ', user_index = user_index + 1';
     }
 
-    const updateQuery = `last_open_date = ${addSqlParameter(dateNow, values)}${callback}${baseUrl}${userIndex}`
-    const condition = `tenant = ${valuesPlaceholder[0]} AND id = ${valuesPlaceholder[1]}`
+    const updateQuery = `last_open_date = ${lastOpenDate}${callback}${baseUrl}${userIndex}`
+    const condition = `tenant = ${tenant} AND id = ${id}`
 
     let mergeSqlCommand = `MERGE INTO ${cfgTableResult} USING DUAL ON (${condition})`
-      + ` WHEN MATCHED THEN UPDATE SET ${updateQuery}`
-      + ` WHEN NOT MATCHED THEN INSERT (tenant, id, status, status_info, last_open_date, user_index, change_id, callback, baseurl) VALUES (${valuesPlaceholder.join(', ')})`;
+      + ` WHEN MATCHED THEN UPDATE SET ${updateQuery}`;
+
+    const valuesPlaceholder = [
+      addSqlParameter(task.tenant, values),
+      addSqlParameter(task.key, values),
+      addSqlParameter(task.status, values),
+      addSqlParameter(task.statusInfo, values),
+      addSqlParameter(dateNow, values),
+      addSqlParameter(task.userIndex, values),
+      addSqlParameter(task.changeId, values),
+      addSqlParameter(cbInsert, values),
+      addSqlParameter(task.baseurl, values)
+    ];
+
+    mergeSqlCommand += ` WHEN NOT MATCHED THEN INSERT (tenant, id, status, status_info, last_open_date, user_index, change_id, callback, baseurl) VALUES (${valuesPlaceholder.join(', ')})`;
 
     sqlQuery(ctx, mergeSqlCommand, function(error, result) {
       if (error) {
@@ -209,10 +206,66 @@ function upsert(ctx, task, opt_updateUserIndex) {
   });
 }
 
+async function insertChanges(ctx, tableChanges, startIndex, objChanges, docId, index, user, callback) {
+  if (startIndex === objChanges.length) {
+    return;
+  }
+
+  let packetCapacityReached = false;
+  let currentIndex = startIndex;
+  let lengthUtf8Current = 'INSERT ALL  SELECT 1 FROM DUAL'.length;
+  let insertAllSqlCommand = 'INSERT ALL ';
+  const values = [];
+
+  const maxInsertionClauseLength = `INTO ${tableChanges} VALUES(:9991,:9992,:9993,:9994,:9995,:9996,:9997,:9998) `.length;
+  const indexBytes = 4;
+  const timeBytes = 8;
+  for (; currentIndex < objChanges.length; ++currentIndex, ++index) {
+    // 4 bytes is maximum for utf8 symbol.
+    const lengthUtf8Row = maxInsertionClauseLength + indexBytes + timeBytes
+      + 4 * (ctx.tenant.length + docId.length + user.id.length + user.idOriginal.length + user.username.length + objChanges[currentIndex].change.length);
+
+    if (lengthUtf8Row + lengthUtf8Current >= cfgMaxPacketSize && currentIndex > startIndex) {
+      packetCapacityReached = true;
+      break;
+    }
+
+    const valuesPlaceholder= [
+      addSqlParameter(ctx.tenant, values),
+      addSqlParameter(docId, values),
+      addSqlParameter(index, values),
+      addSqlParameter(user.id, values),
+      addSqlParameter(user.idOriginal, values),
+      addSqlParameter(user.username, values),
+      addSqlParameter(objChanges[currentIndex].change, values),
+      addSqlParameter(objChanges[currentIndex].time, values)
+    ];
+
+    insertAllSqlCommand += `INTO ${tableChanges} VALUES(${valuesPlaceholder.join(',')}) `;
+  }
+
+  insertAllSqlCommand += 'SELECT 1 FROM DUAL';
+
+  await sqlQuery(ctx, insertAllSqlCommand, function (error, result) {
+    if (error) {
+      callback(error, null, true);
+
+      return;
+    }
+
+    if (packetCapacityReached) {
+      insertChanges(ctx, tableChanges, currentIndex, objChanges, docId, index, user, callback);
+    } else {
+      callback(error, result, true);
+    }
+  }, false, false, values);
+}
+
 module.exports = {
   sqlQuery,
   addSqlParameter,
   concatParams,
   getTableColumns,
-  upsert
+  upsert,
+  insertChanges
 }
\ No newline at end of file
diff --git a/schema/oracle/createdb.sql b/schema/oracle/createdb.sql
index f2370fe2..85263087 100644
--- a/schema/oracle/createdb.sql
+++ b/schema/oracle/createdb.sql
@@ -1,6 +1,6 @@
 -- You must be logged in as SYS(sysdba) user.
 -- Here, "onlyoffice" is a PBD(service) name.
-alter session set container = onlyoffice; --test name: xepdb1;
+alter session set container = onlyoffice;
 
 -- In tables creation section "onlyoffice" is a user name.
 -- ----------------------------
@@ -28,12 +28,12 @@ CREATE TABLE onlyoffice.task_result (
     id NVARCHAR2(255) NOT NULL,
     status NUMBER NOT NULL,
     status_info NUMBER NOT NULL,
-    created_at TIMESTAMP DEFAULT SYSDATE, -- check format
+    created_at TIMESTAMP DEFAULT SYSDATE NOT NULL,
     last_open_date TIMESTAMP NOT NULL,
     user_index NUMBER DEFAULT 1 NOT NULL,
     change_id NUMBER DEFAULT 0 NOT NULL,
-    callback NCLOB NOT NULL,
-    baseurl NCLOB NOT NULL,
+    callback NCLOB,  -- codebase uses '' as default values here, but Oracle treat '' as NULL, so NULL permitted for this value.
+    baseurl NCLOB,  -- codebase uses '' as default values here, but Oracle treat '' as NULL, so NULL permitted for this value.
     password NCLOB NULL,
     additional NCLOB NULL,
     CONSTRAINT task_result_unsigned_int CHECK (user_index BETWEEN 0 AND 4294967295 AND change_id BETWEEN 0 AND 4294967295)
diff --git a/schema/oracle/removetbl.sql b/schema/oracle/removetbl.sql
index ba79fbde..fc1cad26 100644
--- a/schema/oracle/removetbl.sql
+++ b/schema/oracle/removetbl.sql
@@ -1,6 +1,6 @@
 -- You must be logged in as SYS(sysdba) user.
 -- Here, "onlyoffice" is a PBD(service) name.
-alter session set container = xepdb1;
+alter session set container = onlyoffice;
 
 DROP TABLE onlyoffice.doc_changes CASCADE CONSTRAINTS PURGE;
 DROP TABLE onlyoffice.task_result CASCADE CONSTRAINTS PURGE;
\ No newline at end of file