diff --git a/integration-tests/__tests__/alter-table.spec.js b/integration-tests/__tests__/alter-table.spec.js
index afe1c9a61..5687cc612 100644
--- a/integration-tests/__tests__/alter-table.spec.js
+++ b/integration-tests/__tests__/alter-table.spec.js
@@ -4,7 +4,12 @@ const fp = require('lodash/fp');
 const { testWrapper } = require('../tools');
 const engines = require('../engines');
 const crypto = require('crypto');
-const { getAlterTableScript, extendDatabaseInfo, generateDbPairingId } = require('dbgate-tools');
+const {
+  getAlterTableScript,
+  extendDatabaseInfo,
+  generateDbPairingId,
+  formatQueryWithoutParams,
+} = require('dbgate-tools');
 
 function pickImportantTableInfo(engine, table) {
   const props = ['columnName', 'defaultValue'];
@@ -15,7 +20,10 @@ function pickImportantTableInfo(engine, table) {
     columns: table.columns
       .filter(x => x.columnName != 'rowid')
       .map(fp.pick(props))
-      .map(props => _.omitBy(props, x => x == null)),
+      .map(props => _.omitBy(props, x => x == null))
+      .map(props =>
+        _.omitBy(props, (v, k) => k == 'defaultValue' && v == 'NULL' && engine.setNullDefaultInsteadOfDrop)
+      ),
   };
 }
 
@@ -25,27 +33,36 @@ function checkTableStructure(engine, t1, t2) {
 }
 
 async function testTableDiff(engine, conn, driver, mangle) {
-  await driver.query(conn, `create table t0 (id int not null primary key)`);
+  await driver.query(conn, formatQueryWithoutParams(driver, `create table ~t0 (~id int not null primary key)`));
 
   await driver.query(
     conn,
-    `create table t1 (
-    col_pk int not null primary key, 
-    col_std int, 
-    col_def int default 12,
-    ${engine.skipReferences ? '' : 'col_fk int references t0(id),'}
-    col_idx int,
-    col_uq int ${engine.skipUnique ? '' : 'unique'} ,
-    col_ref int ${engine.skipUnique ? '' : 'unique'}
+    formatQueryWithoutParams(
+      driver,
+      `create table ~t1 (
+    ~col_pk int not null primary key, 
+    ~col_std int, 
+    ~col_def int default 12,
+    ${engine.skipReferences ? '' : '~col_fk int references ~t0(~id),'}
+    ~col_idx int,
+    ~col_uq int ${engine.skipUnique ? '' : 'unique'} ,
+    ~col_ref int ${engine.skipUnique ? '' : 'unique'}
   )`
+    )
   );
 
   if (!engine.skipIndexes) {
-    await driver.query(conn, `create index idx1 on t1(col_idx)`);
+    await driver.query(conn, formatQueryWithoutParams(driver, `create index ~idx1 on ~t1(~col_idx)`));
   }
 
   if (!engine.skipReferences) {
-    await driver.query(conn, `create table t2 (id int not null primary key, fkval int null references t1(col_ref))`);
+    await driver.query(
+      conn,
+      formatQueryWithoutParams(
+        driver,
+        `create table ~t2 (~id int not null primary key, ~fkval int null references ~t1(~col_ref))`
+      )
+    );
   }
 
   const tget = x => x.tables.find(y => y.pureName == 't1');
@@ -175,5 +192,4 @@ describe('Alter table', () => {
   //     });
   //   })
   // );
-
 });
diff --git a/integration-tests/engines.js b/integration-tests/engines.js
index b1174f11e..ca52d1707 100644
--- a/integration-tests/engines.js
+++ b/integration-tests/engines.js
@@ -416,6 +416,7 @@ end;$$`,
     },
     skipOnCI: true,
     dbSnapshotBySeconds: true,
+    setNullDefaultInsteadOfDrop: true,
   },
 ];
 
diff --git a/plugins/dbgate-plugin-oracle/src/frontend/Dumper.js b/plugins/dbgate-plugin-oracle/src/frontend/Dumper.js
index cbe0becdd..392e9b712 100644
--- a/plugins/dbgate-plugin-oracle/src/frontend/Dumper.js
+++ b/plugins/dbgate-plugin-oracle/src/frontend/Dumper.js
@@ -60,9 +60,9 @@ class Dumper extends SqlDumper {
   //   this.putCmd('^alter ^table %f ^rename ^to %i', obj, newname);
   // }
 
-  // renameColumn(column, newcol) {
-  //   this.putCmd('^alter ^table %f ^rename ^column %i ^to %i', column, column.columnName, newcol);
-  // }
+  renameColumn(column, newcol) {
+    this.putCmd('^alter ^table %f ^rename ^column %i ^to %i', column, column.columnName, newcol);
+  }
 
   // dropTable(obj, options = {}) {
   //   this.put('^drop ^table');
@@ -87,30 +87,46 @@ class Dumper extends SqlDumper {
   //   super.columnDefinition(col, options);
   // }
 
-  // changeColumn(oldcol, newcol, constraints) {
-  //   if (oldcol.columnName != newcol.columnName) {
-  //     this.putCmd('^alter ^table %f ^rename ^column %i ^to %i', oldcol, oldcol.columnName, newcol.columnName);
-  //   }
-  //   if (!testEqualTypes(oldcol, newcol)) {
-  //     this.putCmd('^alter ^table %f ^alter ^column %i ^type %s', oldcol, newcol.columnName, newcol.dataType);
-  //   }
-  //   if (oldcol.notNull != newcol.notNull) {
-  //     if (newcol.notNull) this.putCmd('^alter ^table %f ^alter ^column %i ^set ^not ^null', newcol, newcol.columnName);
-  //     else this.putCmd('^alter ^table %f ^alter ^column %i ^drop ^not ^null', newcol, newcol.columnName);
-  //   }
-  //   if (oldcol.defaultValue != newcol.defaultValue) {
-  //     if (newcol.defaultValue == null) {
-  //       this.putCmd('^alter ^table %f ^alter ^column %i ^drop ^default', newcol, newcol.columnName);
-  //     } else {
-  //       this.putCmd(
-  //         '^alter ^table %f ^alter ^column %i ^set ^default %s',
-  //         newcol,
-  //         newcol.columnName,
-  //         newcol.defaultValue
-  //       );
-  //     }
-  //   }
-  // }
+  changeColumn(oldcol, newcol, constraints) {
+    if (oldcol.columnName != newcol.columnName) {
+      this.putCmd('^alter ^table %f ^rename ^column %i ^to %i', oldcol, oldcol.columnName, newcol.columnName);
+    }
+
+    if (!testEqualTypes(oldcol, newcol) || oldcol.notNull != newcol.notNull) {
+      this.putCmd(
+        '^alter ^table %f ^modify (%i %s %k)',
+        newcol,
+        newcol.columnName,
+        newcol.dataType,
+        newcol.notNull ? 'not null' : 'null'
+      );
+    }
+
+    if (oldcol.defaultValue != newcol.defaultValue) {
+      if (newcol.defaultValue?.trim()) {
+        this.putCmd('^alter ^table %f ^modify (%i ^default %s)', newcol, newcol.columnName, newcol.defaultValue);
+      } else {
+        this.putCmd('^alter ^table %f ^modify (%i ^default ^null)', newcol, newcol.columnName);
+      }
+    }
+
+    // if (oldcol.notNull != newcol.notNull) {
+    //   if (newcol.notNull) this.putCmd('^alter ^table %f ^alter ^column %i ^set ^not ^null', newcol, newcol.columnName);
+    //   else this.putCmd('^alter ^table %f ^alter ^column %i ^drop ^not ^null', newcol, newcol.columnName);
+    // }
+    // if (oldcol.defaultValue != newcol.defaultValue) {
+    //   if (newcol.defaultValue == null) {
+    //     this.putCmd('^alter ^table %f ^alter ^column %i ^drop ^default', newcol, newcol.columnName);
+    //   } else {
+    //     this.putCmd(
+    //       '^alter ^table %f ^alter ^column %i ^set ^default %s',
+    //       newcol,
+    //       newcol.columnName,
+    //       newcol.defaultValue
+    //     );
+    //   }
+    // }
+  }
 
   // putValue(value) {
   //   if (value === true) this.putRaw('true');