diff --git a/ci/scripts/e2e-source-test.sh b/ci/scripts/e2e-source-test.sh
index adb4c01187c6b..84fff651b547c 100755
--- a/ci/scripts/e2e-source-test.sh
+++ b/ci/scripts/e2e-source-test.sh
@@ -36,9 +36,6 @@ python3 -m pip install --break-system-packages requests protobuf fastavro conflu
 
 echo "--- e2e, inline test"
 RUST_LOG="debug,risingwave_stream=info,risingwave_batch=info,risingwave_storage=info" \
-export PGHOST=db PGPORT=5432 PGUSER=postgres PGPASSWORD=postgres PGDATABASE=cdc_test
-export MYSQL_HOST=mysql MYSQL_TCP_PORT=3306 MYSQL_PWD=123456
-createdb
 risedev ci-start ci-inline-source-test
 risedev slt './e2e_test/source_inline/**/*.slt'
 echo "--- Kill cluster"
@@ -57,6 +54,8 @@ echo "--- e2e, ci-1cn-1fe, mysql & postgres cdc"
 mysql --host=mysql --port=3306 -u root -p123456 < ./e2e_test/source/cdc/mysql_cdc.sql
 
 # import data to postgres
+export PGHOST=db PGPORT=5432 PGUSER=postgres PGPASSWORD=postgres PGDATABASE=cdc_test
+createdb
 psql < ./e2e_test/source/cdc/postgres_cdc.sql
 
 echo "--- starting risingwave cluster"
diff --git a/e2e_test/source_inline/cdc/alter/cdc_table_alter.slt b/e2e_test/source/cdc_inline/alter/cdc_table_alter.slt
similarity index 97%
rename from e2e_test/source_inline/cdc/alter/cdc_table_alter.slt
rename to e2e_test/source/cdc_inline/alter/cdc_table_alter.slt
index 931756cf8860b..d2a0abaeb4b70 100644
--- a/e2e_test/source_inline/cdc/alter/cdc_table_alter.slt
+++ b/e2e_test/source/cdc_inline/alter/cdc_table_alter.slt
@@ -212,3 +212,13 @@ select order_id, product_id, shipment_id from enriched_orders order by order_id;
 10001  102   1001
 10002  105   1002
 10003  106   1003
+
+statement ok
+drop materialized view enriched_orders;
+
+statement ok
+drop source mysql_source cascade;
+
+statement ok
+drop source pg_source cascade;
+
diff --git a/e2e_test/source/cdc_inline/alter/postgres_alter.slt b/e2e_test/source/cdc_inline/alter/postgres_alter.slt
index 883dc669b03ca..807b6a152af54 100644
--- a/e2e_test/source/cdc_inline/alter/postgres_alter.slt
+++ b/e2e_test/source/cdc_inline/alter/postgres_alter.slt
@@ -37,7 +37,7 @@ INSERT INTO alter_test VALUES (3, 'c');
 "
 
 # FIXME: after schema change in RisingWave, why does it take so long to get the new data?
-sleep 5s
+sleep 20s
 
 query ITT
 SELECT * FROM alter_test ORDER BY k
@@ -72,7 +72,7 @@ INSERT INTO alter_test VALUES (5, 'ee');
 "
 
 # FIXME: after schema change in RisingWave, why does it take so long to get the new data?
-sleep 5s
+sleep 20s
 
 query IT
 SELECT * FROM alter_test ORDER BY k