diff --git a/configs/fb30_sc.conf b/configs/fb30_sc.conf
index c2820837..73e7de61 100644
--- a/configs/fb30_sc.conf
+++ b/configs/fb30_sc.conf
@@ -6,7 +6,7 @@ DefaultDBCachePages = 2048
 
 # Common for all connections in SC:
 #
-TempCacheLimit = 512K
+TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
 # connection protocols (rather than INET one):
diff --git a/configs/fb30_ss.conf b/configs/fb30_ss.conf
index 15a72de7..737def67 100644
--- a/configs/fb30_ss.conf
+++ b/configs/fb30_ss.conf
@@ -3,14 +3,23 @@
 
 ServerMode = Super
 
+# Increased 11.04.2021 after discuss with dimitr
+# See mailbox pz@ibase.ru, 11-apr-2021.
+# DefaultDBCachePages = 100K
+
+# Reduced 06.12.2022 otherwise dumps will have
+# too big size and will be rotated too frequent.
+# Discussed with Alex
+# See mailbox p519446@yandex.ru, 16-nov-2022
+#
+DefaultDBCachePages = 10K
+
+
 # Common for all connections in SS:
 #
 # Increased 11.04.2021 after discuss with dimitr
 # See e-mail pz@ibase.ru, 11-apr-2021.
-DefaultDBCachePages = 100K
-
-# Increased 11.04.2021 after discuss with dimitr
-# See e-mail pz@ibase.ru, 11-apr-2021.
+#
 TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
diff --git a/configs/fb40_sc.conf b/configs/fb40_sc.conf
index 3cb373f1..da2aa3e6 100644
--- a/configs/fb40_sc.conf
+++ b/configs/fb40_sc.conf
@@ -6,7 +6,7 @@ DefaultDBCachePages = 2048
 
 # Common for all connections in SC:
 #
-TempCacheLimit = 512K
+TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
 # connection protocols (rather than INET one):
diff --git a/configs/fb40_ss.conf b/configs/fb40_ss.conf
index 880d1cf4..41b8c422 100644
--- a/configs/fb40_ss.conf
+++ b/configs/fb40_ss.conf
@@ -3,14 +3,23 @@
 
 ServerMode = Super
 
+# Increased 11.04.2021 after discuss with dimitr
+# See mailbox pz@ibase.ru, 11-apr-2021.
+# DefaultDBCachePages = 100K
+
+# Reduced 06.12.2022 otherwise dumps will have
+# too big size and will be rotated too frequent.
+# Discussed with Alex
+# See mailbox p519446@yandex.ru, 16-nov-2022
+#
+DefaultDBCachePages = 10K
+
+
 # Common for all connections in SS:
 #
 # Increased 11.04.2021 after discuss with dimitr
 # See e-mail pz@ibase.ru, 11-apr-2021.
-DefaultDBCachePages = 100K
-
-# Increased 11.04.2021 after discuss with dimitr
-# See e-mail pz@ibase.ru, 11-apr-2021.
+#
 TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
diff --git a/configs/fb50_sc.conf b/configs/fb50_sc.conf
index 3c166a91..3805b507 100644
--- a/configs/fb50_sc.conf
+++ b/configs/fb50_sc.conf
@@ -6,7 +6,7 @@ DefaultDBCachePages = 2048
 
 # Common for all connections in SC:
 #
-TempCacheLimit = 512K
+TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
 # connection protocols (rather than INET one):
diff --git a/configs/fb50_ss.conf b/configs/fb50_ss.conf
index 374beaf1..6de87b16 100644
--- a/configs/fb50_ss.conf
+++ b/configs/fb50_ss.conf
@@ -3,14 +3,23 @@
 
 ServerMode = Super
 
+# Increased 11.04.2021 after discuss with dimitr
+# See mailbox pz@ibase.ru, 11-apr-2021.
+# DefaultDBCachePages = 100K
+
+# Reduced 06.12.2022 otherwise dumps will have
+# too big size and will be rotated too frequent.
+# Discussed with Alex
+# See mailbox p519446@yandex.ru, 16-nov-2022
+#
+DefaultDBCachePages = 10K
+
+
 # Common for all connections in SS:
 #
 # Increased 11.04.2021 after discuss with dimitr
 # See e-mail pz@ibase.ru, 11-apr-2021.
-DefaultDBCachePages = 100K
-
-# Increased 11.04.2021 after discuss with dimitr
-# See e-mail pz@ibase.ru, 11-apr-2021.
+#
 TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
diff --git a/configs/hq30_all.conf b/configs/hq30_all.conf
index 384dc6a0..340f21ce 100644
--- a/configs/hq30_all.conf
+++ b/configs/hq30_all.conf
@@ -25,7 +25,6 @@ FileSystemCacheThreshold = 99999K
 # Encryption demo plugin was supplied by IBSurgeon, see !ENCRYPTION_PLUGIN_FOLDER!
 #
 WireCrypt = Enabled
-KeyHolderPlugin = KeyHolder
 
 MaxUnflushedWrites = -1
 MaxUnflushedWriteTime = -1
@@ -52,15 +51,25 @@ AuthClient = Srp, Srp256, Win_Sspi, Legacy_Auth
 AuthServer = Srp, Srp256, Win_Sspi, Legacy_Auth
 UserManager = Srp, Legacy_UserManager
 
-SortDataStorageThreshold = -1
+SortDataStorageThreshold = 4096
 TempSpaceLogThreshold = 0
 
 ExtConnPoolLifeTime = 10
 ExtConnPoolSize = 10
 
 HQbirdVersionString = 1
-DSQLCacheSize = 0
+
 LegacyDatabaseFileId = true
-ParallelWorkers = 1
-MaxParallelWorkers = 1
 ClearGTTAtRetaining = 1
+
+ParallelWorkers = 1
+MaxParallelWorkers = 2
+
+DSQLCacheSize = 0
+MaxTempBlobs = 1000
+BlobTempSpace = 0
+
+# NB: this parameter had default value = TRUE
+# before feb-2022 (builds 33560 earlier).
+#
+LeftJoinConversion = false
diff --git a/configs/hq30_sc.conf b/configs/hq30_sc.conf
index f20f6e8e..d73265bc 100644
--- a/configs/hq30_sc.conf
+++ b/configs/hq30_sc.conf
@@ -6,7 +6,7 @@ DefaultDBCachePages = 2048
 
 # Common for all connections in SC:
 #
-TempCacheLimit = 512K
+TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
 # connection protocols (rather than INET one):
diff --git a/configs/hq30_ss.conf b/configs/hq30_ss.conf
index 90d4986b..67196735 100644
--- a/configs/hq30_ss.conf
+++ b/configs/hq30_ss.conf
@@ -2,11 +2,25 @@
 ################################################
 
 ServerMode = Super
-DefaultDBCachePages = 50000
+
+# Increased 11.04.2021 after discuss with dimitr
+# See mailbox pz@ibase.ru, 11-apr-2021.
+# DefaultDBCachePages = 100K
+
+# Reduced 06.12.2022 otherwise dumps will have
+# too big size and will be rotated too frequent.
+# Discussed with Alex
+# See mailbox p519446@yandex.ru, 16-nov-2022
+#
+DefaultDBCachePages = 10K
+
 
 # Common for all connections in SS:
 #
-TempCacheLimit = 512K
+# Increased 11.04.2021 after discuss with dimitr
+# See e-mail pz@ibase.ru, 11-apr-2021.
+#
+TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
 # connection protocols (rather than INET one):
diff --git a/configs/hq40_all.conf b/configs/hq40_all.conf
index 384dc6a0..7d530e0d 100644
--- a/configs/hq40_all.conf
+++ b/configs/hq40_all.conf
@@ -1,4 +1,4 @@
-# Common parameters for all HQbird 3.x ServerMode.
+# Common parameters for all HQbird 4.x ServerMode.
 #
 ##################################################
 
@@ -25,7 +25,6 @@ FileSystemCacheThreshold = 99999K
 # Encryption demo plugin was supplied by IBSurgeon, see !ENCRYPTION_PLUGIN_FOLDER!
 #
 WireCrypt = Enabled
-KeyHolderPlugin = KeyHolder
 
 MaxUnflushedWrites = -1
 MaxUnflushedWriteTime = -1
@@ -52,15 +51,21 @@ AuthClient = Srp, Srp256, Win_Sspi, Legacy_Auth
 AuthServer = Srp, Srp256, Win_Sspi, Legacy_Auth
 UserManager = Srp, Legacy_UserManager
 
-SortDataStorageThreshold = -1
+SortDataStorageThreshold = 4096
 TempSpaceLogThreshold = 0
 
 ExtConnPoolLifeTime = 10
 ExtConnPoolSize = 10
 
 HQbirdVersionString = 1
-DSQLCacheSize = 0
+
 LegacyDatabaseFileId = true
-ParallelWorkers = 1
-MaxParallelWorkers = 1
 ClearGTTAtRetaining = 1
+
+ParallelWorkers = 1
+MaxParallelWorkers = 2
+
+DSQLCacheSize = 0
+MaxTempBlobs = 1000
+BlobTempSpace = 1
+LeftJoinConversion = false
diff --git a/configs/hq40_cs.conf b/configs/hq40_cs.conf
index 1599eeec..7b1356bc 100644
--- a/configs/hq40_cs.conf
+++ b/configs/hq40_cs.conf
@@ -1,4 +1,4 @@
-# Parameters specific to HQbird 3.x Classic
+# Parameters specific to HQbird 4.x Classic
 ###########################################
 
 ServerMode = Classic
diff --git a/configs/hq40_sc.conf b/configs/hq40_sc.conf
index 345c4bd9..ca7847b5 100644
--- a/configs/hq40_sc.conf
+++ b/configs/hq40_sc.conf
@@ -1,4 +1,4 @@
-# Parameters specific to HQbird 3.x SuperClassic:
+# Parameters specific to HQbird 4.x SuperClassic:
 #################################################
 
 ServerMode = SuperClassic
@@ -6,7 +6,7 @@ DefaultDBCachePages = 2048
 
 # Common for all connections in SC:
 #
-TempCacheLimit = 512K
+TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
 # connection protocols (rather than INET one):
diff --git a/configs/hq40_ss.conf b/configs/hq40_ss.conf
index 36bf6ebe..a5f8355f 100644
--- a/configs/hq40_ss.conf
+++ b/configs/hq40_ss.conf
@@ -1,12 +1,26 @@
-# Parameters specific to HQbird 3.x SuperServer:
+# Parameters specific to HQbird 4.x SuperServer:
 ################################################
 
 ServerMode = Super
-DefaultDBCachePages = 10000
+
+# Increased 11.04.2021 after discuss with dimitr
+# See mailbox pz@ibase.ru, 11-apr-2021.
+# DefaultDBCachePages = 100K
+
+# Reduced 06.12.2022 otherwise dumps will have
+# too big size and will be rotated too frequent.
+# Discussed with Alex
+# See mailbox p519446@yandex.ru, 16-nov-2022
+#
+DefaultDBCachePages = 10K
+
 
 # Common for all connections in SS:
 #
-TempCacheLimit = 512K
+# Increased 11.04.2021 after discuss with dimitr
+# See e-mail pz@ibase.ru, 11-apr-2021.
+#
+TempCacheLimit = 1G
 
 # Parameters for tests which must use XNET/WNET
 # connection protocols (rather than INET one):