diff --git a/server/website/script/fixture_generators/knob_settings/oracle/create_knob_settings.py b/server/website/script/fixture_generators/knob_settings/oracle/create_knob_settings.py
index b6924b0..e03cc5e 100644
--- a/server/website/script/fixture_generators/knob_settings/oracle/create_knob_settings.py
+++ b/server/website/script/fixture_generators/knob_settings/oracle/create_knob_settings.py
@@ -46,6 +46,28 @@ EXTRA_KNOBS = {
     '_smm_px_max_size': {
         'default': 300000,
     },
+    '_optimizer_use_feedback': {
+        'default': True,
+        'minval': None,
+        'maxval': None,
+        'vartype': 4,
+    },
+    'ioseektim': {
+        'default': 10,
+        'minval': 1,
+        'maxval': 10,
+    },
+    'iotfrspeed': {
+        'default': 4096,
+        'minval': 4096,
+        'maxval': 190000,
+    },
+    '_enable_numa_optimization': {
+        'default': False,
+        'minval': None,
+        'maxval': None,
+        'vartype': 4,
+    },
 }
 
 
@@ -223,8 +245,8 @@ def set_field(fields):
         fields['default'] = False
     if fields['name'].lower() == 'optimizer_dynamic_sampling':
         fields['tunable'] = True
-        fields['minval'] = 0
-        fields['maxval'] = 11
+        fields['minval'] = 2
+        fields['maxval'] = 10
         fields['default'] = 2
     if fields['name'].lower() == 'optimizer_adaptive_plans':
         fields['tunable'] = True
@@ -232,6 +254,12 @@ def set_field(fields):
         fields['maxval'] = None
         fields['default'] = True
         fields['vartype'] = 4
+    if fields['name'].lower() == 'optimizer_adaptive_statistics':
+        fields['tunable'] = True
+        fields['minval'] = None
+        fields['maxval'] = None
+        fields['default'] = True
+        fields['vartype'] = 4
     if fields['name'].lower() == 'optimizer_features_enable':
         fields['tunable'] = True
         fields['minval'] = None
@@ -241,9 +269,21 @@ def set_field(fields):
         fields['enumvals'] = '11.2.0.1,11.2.0.2,11.2.0.3,11.2.0.4,12.1.0.1,12.1.0.2,12.2.0.1'
     if fields['name'].upper() == 'DISK_ASYNCH_IO':
         fields['tunable'] = True
+        fields['vartype'] = 4
+        fields['default'] = True
+        fields['minval'] = None
+        fields['maxval'] = None
+    if fields['name'].lower() == 'db_writer_processes':
+        fields['tunable'] = False
+        fields['minval'] = 1
+        fields['maxval'] = 10
+        fields['default'] = 1
+    if fields['name'].lower() == 'filesystemio_options':
+        fields['default'] = 'none'
+        fields['minval'] = None
+        fields['maxval'] = None
         fields['vartype'] = 5
-        fields['enumvals'] = 'TRUE,FALSE'
-        fields['default'] = 'TRUE'
+        fields['enumvals'] = 'asynch,directio,none,setall'
 
 
 COLNAMES = ("NAME", "TYPE", "DEFAULT_VALUE", "DESCRIPTION")
diff --git a/server/website/website/fixtures/oracle-121_knobs.json b/server/website/website/fixtures/oracle-121_knobs.json
index 6e994e2..67a16b2 100644
--- a/server/website/website/fixtures/oracle-121_knobs.json
+++ b/server/website/website/fixtures/oracle-121_knobs.json
@@ -1,4 +1,42 @@
 [
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global._enable_numa_optimization",
+            "scope": "global",
+            "dbms": 121,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 4,
+            "minval": null,
+            "maxval": null,
+            "default": false
+        }
+    },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global._optimizer_use_feedback",
+            "scope": "global",
+            "dbms": 121,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 4,
+            "minval": null,
+            "maxval": null,
+            "default": true
+        }
+    },
     {
         "model": "website.KnobCatalog",
         "fields": {
@@ -1708,10 +1746,10 @@
             "unit": 3,
             "tunable": false,
             "description": "",
-            "minval": null,
-            "maxval": null,
+            "minval": 1,
+            "maxval": 10,
             "vartype": 2,
-            "default": "1",
+            "default": 1,
             "summary": "number of background database writer  processes to start"
         }
     },
@@ -1874,15 +1912,15 @@
             "scope": "global",
             "dbms": 121,
             "category": "",
-            "enumvals": "TRUE,FALSE",
+            "enumvals": null,
             "context": "",
             "unit": 3,
             "tunable": true,
             "description": "",
             "minval": null,
             "maxval": null,
-            "vartype": 5,
-            "default": "TRUE",
+            "vartype": 4,
+            "default": true,
             "summary": "Use asynch I/O for random access devices"
         }
     },
@@ -2216,15 +2254,15 @@
             "scope": "global",
             "dbms": 121,
             "category": "",
-            "enumvals": null,
+            "enumvals": "asynch,directio,none,setall",
             "context": "",
             "unit": 3,
             "tunable": false,
             "description": "",
             "minval": null,
             "maxval": null,
-            "vartype": 1,
-            "default": "NULL",
+            "vartype": 5,
+            "default": "none",
             "summary": "IO operations on filesystem files"
         }
     },
@@ -2628,6 +2666,44 @@
             "summary": "instant repopulation of datafiles"
         }
     },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global.ioseektim",
+            "scope": "global",
+            "dbms": 121,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 2,
+            "minval": 1,
+            "maxval": 10,
+            "default": 10
+        }
+    },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global.iotfrspeed",
+            "scope": "global",
+            "dbms": 121,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 2,
+            "minval": 4096,
+            "maxval": 190000,
+            "default": 4096
+        }
+    },
     {
         "model": "website.KnobCatalog",
         "fields": {
@@ -5038,8 +5114,8 @@
             "unit": 3,
             "tunable": true,
             "description": "",
-            "minval": 0,
-            "maxval": 11,
+            "minval": 2,
+            "maxval": 10,
             "vartype": 2,
             "default": 2,
             "summary": "optimizer dynamic sampling"
diff --git a/server/website/website/fixtures/oracle-12_knobs.json b/server/website/website/fixtures/oracle-12_knobs.json
index 2c5d5b4..dc803cf 100644
--- a/server/website/website/fixtures/oracle-12_knobs.json
+++ b/server/website/website/fixtures/oracle-12_knobs.json
@@ -1,4 +1,42 @@
 [
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global._enable_numa_optimization",
+            "scope": "global",
+            "dbms": 12,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 4,
+            "minval": null,
+            "maxval": null,
+            "default": false
+        }
+    },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global._optimizer_use_feedback",
+            "scope": "global",
+            "dbms": 12,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 4,
+            "minval": null,
+            "maxval": null,
+            "default": true
+        }
+    },
     {
         "model": "website.KnobCatalog",
         "fields": {
@@ -1993,10 +2031,10 @@
             "unit": 3,
             "tunable": false,
             "description": "",
-            "minval": null,
-            "maxval": null,
+            "minval": 1,
+            "maxval": 10,
             "vartype": 2,
-            "default": "0",
+            "default": 1,
             "summary": "number of background database writer  processes to start"
         }
     },
@@ -2197,15 +2235,15 @@
             "scope": "global",
             "dbms": 12,
             "category": "",
-            "enumvals": "TRUE,FALSE",
+            "enumvals": null,
             "context": "",
             "unit": 3,
             "tunable": true,
             "description": "",
             "minval": null,
             "maxval": null,
-            "vartype": 5,
-            "default": "TRUE",
+            "vartype": 4,
+            "default": true,
             "summary": "Use asynch I/O for random access devices"
         }
     },
@@ -2634,15 +2672,15 @@
             "scope": "global",
             "dbms": 12,
             "category": "",
-            "enumvals": null,
+            "enumvals": "asynch,directio,none,setall",
             "context": "",
             "unit": 3,
             "tunable": false,
             "description": "",
             "minval": null,
             "maxval": null,
-            "vartype": 1,
-            "default": "asynch",
+            "vartype": 5,
+            "default": "none",
             "summary": "IO operations on filesystem files"
         }
     },
@@ -3122,6 +3160,44 @@
             "summary": "instant repopulation of datafiles"
         }
     },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global.ioseektim",
+            "scope": "global",
+            "dbms": 12,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 2,
+            "minval": 1,
+            "maxval": 10,
+            "default": 10
+        }
+    },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global.iotfrspeed",
+            "scope": "global",
+            "dbms": 12,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 2,
+            "minval": 4096,
+            "maxval": 190000,
+            "default": 4096
+        }
+    },
     {
         "model": "website.KnobCatalog",
         "fields": {
@@ -5644,12 +5720,12 @@
             "enumvals": null,
             "context": "",
             "unit": 3,
-            "tunable": false,
+            "tunable": true,
             "description": "",
             "minval": null,
             "maxval": null,
             "vartype": 4,
-            "default": "FALSE",
+            "default": true,
             "summary": "controls all types of adaptive statistics"
         }
     },
@@ -5684,8 +5760,8 @@
             "unit": 3,
             "tunable": true,
             "description": "",
-            "minval": 0,
-            "maxval": 11,
+            "minval": 2,
+            "maxval": 10,
             "vartype": 2,
             "default": 2,
             "summary": "optimizer dynamic sampling"
diff --git a/server/website/website/fixtures/oracle-19_knobs.json b/server/website/website/fixtures/oracle-19_knobs.json
index 5e7ce98..cc897a1 100644
--- a/server/website/website/fixtures/oracle-19_knobs.json
+++ b/server/website/website/fixtures/oracle-19_knobs.json
@@ -1,4 +1,42 @@
 [
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global._enable_numa_optimization",
+            "scope": "global",
+            "dbms": 19,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 4,
+            "minval": null,
+            "maxval": null,
+            "default": false
+        }
+    },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global._optimizer_use_feedback",
+            "scope": "global",
+            "dbms": 19,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 4,
+            "minval": null,
+            "maxval": null,
+            "default": true
+        }
+    },
     {
         "model": "website.KnobCatalog",
         "fields": {
@@ -2088,10 +2126,10 @@
             "unit": 3,
             "tunable": false,
             "description": "",
-            "minval": null,
-            "maxval": null,
+            "minval": 1,
+            "maxval": 10,
             "vartype": 2,
-            "default": "0",
+            "default": 1,
             "summary": "number of background database writer  processes to start"
         }
     },
@@ -2292,15 +2330,15 @@
             "scope": "global",
             "dbms": 19,
             "category": "",
-            "enumvals": "TRUE,FALSE",
+            "enumvals": null,
             "context": "",
             "unit": 3,
             "tunable": true,
             "description": "",
             "minval": null,
             "maxval": null,
-            "vartype": 5,
-            "default": "TRUE",
+            "vartype": 4,
+            "default": true,
             "summary": "Use asynch I/O for random access devices"
         }
     },
@@ -2729,15 +2767,15 @@
             "scope": "global",
             "dbms": 19,
             "category": "",
-            "enumvals": null,
+            "enumvals": "asynch,directio,none,setall",
             "context": "",
             "unit": 3,
             "tunable": false,
             "description": "",
             "minval": null,
             "maxval": null,
-            "vartype": 1,
-            "default": "asynch",
+            "vartype": 5,
+            "default": "none",
             "summary": "IO operations on filesystem files"
         }
     },
@@ -3350,6 +3388,44 @@
             "summary": "instant repopulation of datafiles"
         }
     },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global.ioseektim",
+            "scope": "global",
+            "dbms": 19,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 2,
+            "minval": 1,
+            "maxval": 10,
+            "default": 10
+        }
+    },
+    {
+        "model": "website.KnobCatalog",
+        "fields": {
+            "name": "global.iotfrspeed",
+            "scope": "global",
+            "dbms": 19,
+            "category": "",
+            "enumvals": null,
+            "context": "",
+            "unit": 3,
+            "tunable": false,
+            "description": "",
+            "summary": "",
+            "vartype": 2,
+            "minval": 4096,
+            "maxval": 190000,
+            "default": 4096
+        }
+    },
     {
         "model": "website.KnobCatalog",
         "fields": {
@@ -5967,12 +6043,12 @@
             "enumvals": null,
             "context": "",
             "unit": 3,
-            "tunable": false,
+            "tunable": true,
             "description": "",
             "minval": null,
             "maxval": null,
             "vartype": 4,
-            "default": "FALSE",
+            "default": true,
             "summary": "controls all types of adaptive statistics"
         }
     },
@@ -6007,8 +6083,8 @@
             "unit": 3,
             "tunable": true,
             "description": "",
-            "minval": 0,
-            "maxval": 11,
+            "minval": 2,
+            "maxval": 10,
             "vartype": 2,
             "default": 2,
             "summary": "optimizer dynamic sampling"