diff --git a/oam/install_scripts/mariadb-columnstore-start.sh.in b/oam/install_scripts/mariadb-columnstore-start.sh.in
index f79307538..2adf25434 100644
--- a/oam/install_scripts/mariadb-columnstore-start.sh.in
+++ b/oam/install_scripts/mariadb-columnstore-start.sh.in
@@ -15,7 +15,6 @@ flock -n "$fd_lock" || exit 0
 /bin/systemctl start mcs-exemgr
 /bin/systemctl start mcs-dmlproc
 /bin/systemctl start mcs-ddlproc
-sleep 2
 su -s /bin/sh -c '@ENGINE_BINDIR@/dbbuilder 7' @DEFAULT_USER@ 1> /tmp/columnstore_tmp_files/dbbuilder.log
 
 flock -u "$fd_lock"
diff --git a/oam/install_scripts/mcs-ddlproc.service.in b/oam/install_scripts/mcs-ddlproc.service.in
index d5e3aa220..241c78b5b 100644
--- a/oam/install_scripts/mcs-ddlproc.service.in
+++ b/oam/install_scripts/mcs-ddlproc.service.in
@@ -13,7 +13,7 @@ Group=@DEFAULT_GROUP@
 LimitNOFILE=65536
 LimitNPROC=65536
 
-ExecStart=/usr/bin/env bash -c "/bin/sleep 2 && @ENGINE_BINDIR@/DDLProc"
+ExecStart=@ENGINE_BINDIR@/DDLProc
 
 Restart=on-failure
 TimeoutStopSec=2
diff --git a/oam/install_scripts/mcs-dmlproc.service.in b/oam/install_scripts/mcs-dmlproc.service.in
index 2ccaf29af..b8c5e5e7e 100644
--- a/oam/install_scripts/mcs-dmlproc.service.in
+++ b/oam/install_scripts/mcs-dmlproc.service.in
@@ -13,7 +13,7 @@ Group=@DEFAULT_GROUP@
 LimitNOFILE=65536
 LimitNPROC=65536
 
-ExecStart=/usr/bin/env bash -c "/bin/sleep 2 && @ENGINE_BINDIR@/DMLProc"
+ExecStart=@ENGINE_BINDIR@/DMLProc
 
 Restart=on-failure
 TimeoutStopSec=2
diff --git a/oam/install_scripts/mcs-loadbrm.service.in b/oam/install_scripts/mcs-loadbrm.service.in
index 1aeeca8db..6c3e98516 100644
--- a/oam/install_scripts/mcs-loadbrm.service.in
+++ b/oam/install_scripts/mcs-loadbrm.service.in
@@ -5,7 +5,7 @@ After=network.target mcs-storagemanager.service
 
 [Service]
 Type=oneshot
-ExecStart=/usr/bin/env bash -c "@ENGINE_BINDIR@/mcs-loadbrm.py && sleep 2" 
+ExecStart=@ENGINE_BINDIR@/mcs-loadbrm.py
 EnvironmentFile=-/etc/columnstore/systemd.env
 
 [Install]
diff --git a/oam/install_scripts/mcs-primproc.service.in b/oam/install_scripts/mcs-primproc.service.in
index d963e3e69..11da04490 100644
--- a/oam/install_scripts/mcs-primproc.service.in
+++ b/oam/install_scripts/mcs-primproc.service.in
@@ -16,7 +16,6 @@ LimitNPROC=65536
 
 ExecStartPre=/usr/bin/env bash -c "[ -f '@ENGINE_DATADIR@/libjemalloc.so.2' ] || ldconfig -p | grep -m1 libjemalloc > /dev/null || echo 'Please install jemalloc to avoid ColumnStore performance degradation and unexpected service interruptions.'"
 ExecStart=/usr/bin/env bash -c "ldconfig -p | grep -m1 libjemalloc > /dev/null && LD_PRELOAD=$(ldconfig -p | grep -m1 libjemalloc | awk '{print $1}') exec @ENGINE_BINDIR@/PrimProc || [ -f '@ENGINE_DATADIR@/libjemalloc.so.2' ] && LD_PRELOAD=@ENGINE_DATADIR@/libjemalloc.so.2 exec @ENGINE_BINDIR@/PrimProc || exec @ENGINE_BINDIR@/PrimProc"
-ExecStartPost=/bin/sleep 2
 
 Restart=on-failure
 TimeoutStopSec=2