diff --git a/.travis.yml b/.travis.yml
index e152e13ee..5b82e811a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -80,9 +80,7 @@ install:
   - bash .travis/install_sqlcl.sh
   - sudo mkdir -p /dev/pdbs
   - sudo chmod -R 777 /dev/pdbs
-  - df -h
   - if [[ ! $TRAVIS_TAG ]]; then bash .travis/start_db.sh; fi
-  - df -h
 
 before_script:
   - if [[ ! $TRAVIS_TAG ]]; then bash .travis/install.sh; fi
diff --git a/.travis/install.sh b/.travis/install.sh
index bb99a0e2d..7b799eaa0 100644
--- a/.travis/install.sh
+++ b/.travis/install.sh
@@ -2,60 +2,66 @@
 
 cd source
 set -ev
+
 #install core of utplsql
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
+time "$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
 set feedback off
 set verify off
 
 alter session set plsql_warnings = 'ENABLE:ALL', 'DISABLE:(5004,5018,6000,6001,6003,6009,6010,7206)';
+alter session set plsql_optimize_level=0;
 @install_headless.sql $UT3_OWNER $UT3_OWNER_PASSWORD
 SQL
 
-#uninstall core of utplsql
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
-set feedback off
-set verify off
-
-@uninstall_all.sql $UT3_OWNER
-declare
-  v_leftover_objects_count integer;
-begin
-  select sum(cnt)
-    into v_leftover_objects_count
-    from (select count(1) cnt from dba_objects where owner = '$UT3_OWNER'
-    union all
-    select count(1) cnt from dba_synonyms where table_owner = '$UT3_OWNER'
-    );
-  if v_leftover_objects_count > 0 then
-    raise_application_error(-20000, 'Not all objects were successfully uninstalled - leftover objects count='||v_leftover_objects_count);
-  end if;
-end;
-/
+#Run this step only on first job slave (11.2 - at it's fastest)
+if [[ "${TRAVIS_JOB_NUMBER}" =~ \.1$ ]]; then
+
+    #check code-style for errors
+    time "$SQLCLI" $UT3_OWNER/$UT3_OWNER_PASSWORD@//$CONNECTION_STR @../development/utplsql_style_check.sql
+
+    #test install/uninstall process
+    time "$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
+    set feedback off
+    set verify off
+
+    @uninstall_all.sql $UT3_OWNER
+    declare
+      v_leftover_objects_count integer;
+    begin
+      select sum(cnt)
+        into v_leftover_objects_count
+        from (select count(1) cnt from dba_objects where owner = '$UT3_OWNER'
+        union all
+        select count(1) cnt from dba_synonyms where table_owner = '$UT3_OWNER'
+        );
+      if v_leftover_objects_count > 0 then
+        raise_application_error(-20000, 'Not all objects were successfully uninstalled - leftover objects count='||v_leftover_objects_count);
+      end if;
+    end;
+    /
 SQL
 
-#reinstall core of utplsql
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
-set feedback off
-set verify off
+    time "$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
+    set feedback off
+    set verify off
 
-alter session set plsql_warnings = 'ENABLE:ALL', 'DISABLE:(5004,5018,6000,6001,6003,6009,6010,7206)';
-@install.sql $UT3_OWNER
+    alter session set plsql_optimize_level=0;
+    @install.sql $UT3_OWNER
 SQL
 
+fi
+
 #additional privileges to run scripted tests
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
+time "$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
 set feedback on
 --needed for Mystats script to work
 grant select any dictionary to $UT3_OWNER;
 --Needed for testing a coverage outside ut3_owner.
 grant create any procedure, drop any procedure, execute any procedure to $UT3_OWNER;
-
-conn $UT3_OWNER/$UT3_OWNER_PASSWORD@//$CONNECTION_STR
-@../development/utplsql_style_check.sql
 SQL
 
-#Create additional users
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
+#Create user that will own the tests
+time "$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
 set feedback off
 @create_utplsql_owner.sql $UT3_TESTER $UT3_TESTER_PASSWORD $UT3_TABLESPACE
 
@@ -70,29 +76,11 @@ grant create job to $UT3_TESTER;
 exit
 SQL
 
-#additional privileges to run tests
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
-set feedback on
---needed for Mystats script to work
-grant select any dictionary to $UT3_OWNER;
---Needed for testing a coverage outside ut3_owner.
-grant create any procedure, drop any procedure, execute any procedure to $UT3_OWNER;
-
-exit
-SQL
-
-#Create additional users
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
+#Create additional UT3$USER# to test for special characters
+time "$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
 set feedback off
 @create_utplsql_owner.sql $UT3_USER $UT3_USER_PASSWORD $UT3_TABLESPACE
-
-exit
-SQL
-
-#Grant UT3 framework to UT3$USER#
-"$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<-SQL
-set feedback off
+--Grant UT3 framework to UT3$USER#
 @create_user_grants.sql $UT3_OWNER $UT3_USER
-
 exit
 SQL
diff --git a/.travis/install_utplsql_release.sh b/.travis/install_utplsql_release.sh
index f551ff9b5..889e098da 100644
--- a/.travis/install_utplsql_release.sh
+++ b/.travis/install_utplsql_release.sh
@@ -37,7 +37,7 @@ end;
 SQL
 
 "$SQLCLI" sys/$ORACLE_PWD@//$CONNECTION_STR AS SYSDBA <<SQL
-alter session set plsql_warnings = 'ENABLE:ALL', 'DISABLE:(5004,5018,6000,6001,6003,6009,6010,7206)';
+alter session set plsql_optimize_level=0;
 @install_headless.sql ${UT3_RELEASE_VERSION_SCHEMA}
 exit
 SQL
diff --git a/.travis/start_db.sh b/.travis/start_db.sh
index 2f71c07bd..e42656987 100644
--- a/.travis/start_db.sh
+++ b/.travis/start_db.sh
@@ -10,6 +10,9 @@ else
     mkdir -p $HOME/.docker && cp $CACHE_DIR/.docker/config.json $HOME/.docker/
 fi
 
-docker pull $DOCKHER_HUB_REPO:$ORACLE_VERSION
+df -h
+time docker pull $DOCKHER_HUB_REPO:$ORACLE_VERSION
+df -h
 docker run -d --name $ORACLE_VERSION $DOCKER_OPTIONS -p 1521:1521 $DOCKHER_HUB_REPO:$ORACLE_VERSION
-docker logs -f $ORACLE_VERSION | grep -m 1 "DATABASE IS READY TO USE!" --line-buffered
\ No newline at end of file
+time docker logs -f $ORACLE_VERSION | grep -m 1 "DATABASE IS READY TO USE!" --line-buffered
+df -h
diff --git a/test/install_and_run_tests.sh b/test/install_and_run_tests.sh
index 2c6f78ae1..a1e5e0849 100644
--- a/test/install_and_run_tests.sh
+++ b/test/install_and_run_tests.sh
@@ -8,11 +8,11 @@ git rev-parse && cd "$(git rev-parse --show-cdup)"
 
 cd test
 
-"$SQLCLI" ${UT3_TESTER}/${UT3_TESTER_PASSWORD}@//${CONNECTION_STR} @install_tests.sql
+time "$SQLCLI" ${UT3_TESTER}/${UT3_TESTER_PASSWORD}@//${CONNECTION_STR} @install_tests.sql
 
 cd ..
 
-utPLSQL-cli/bin/utplsql run ${UT3_TESTER}/${UT3_TESTER_PASSWORD}@${CONNECTION_STR} \
+time utPLSQL-cli/bin/utplsql run ${UT3_TESTER}/${UT3_TESTER_PASSWORD}@${CONNECTION_STR} \
 -source_path=source -owner=ut3 \
 -test_path=test -c \
 -f=ut_documentation_reporter  -o=test_results.log -s \
diff --git a/test/install_tests.sql b/test/install_tests.sql
index e0a5d6d9f..3e90b1590 100644
--- a/test/install_tests.sql
+++ b/test/install_tests.sql
@@ -2,6 +2,7 @@ set define off
 whenever sqlerror exit failure rollback
 whenever oserror exit failure rollback
 
+alter session set plsql_optimize_level=0;
 --Install helpers
 @@helpers/ut_test_table.sql
 @@helpers/ut_example_tests.pks