diff --git a/.github/workflows/build-cloudberry.yml b/.github/workflows/build-cloudberry.yml
index a0ee80ea46d..ecb19067d06 100644
--- a/.github/workflows/build-cloudberry.yml
+++ b/.github/workflows/build-cloudberry.yml
@@ -643,6 +643,7 @@ jobs:
       options: >-
         --user root
         -h cdw
+        --shm-size=2gb
 
     steps:
 
diff --git a/src/test/regress/greenplum_schedule b/src/test/regress/greenplum_schedule
index e86eaab07d6..dbc67d4944d 100755
--- a/src/test/regress/greenplum_schedule
+++ b/src/test/regress/greenplum_schedule
@@ -258,7 +258,7 @@ test: ao_locks
 test: freeze_aux_tables
 
 # cbdb parallel test
-ignore: cbdb_parallel
+test: cbdb_parallel
 
 # These cannot run in parallel, because they check that VACUUM FULL shrinks table size.
 # A concurrent session could hold back the xid horizon and prevent old tuples from being
@@ -269,7 +269,7 @@ test: vacuum_full_heap
 test: vacuum_full_heap_bitmapindex
 test: vacuum_ao_aux_only
 # Check for shmem leak for instrumentation slots
-ignore: instr_in_shmem_verify
+test: instr_in_shmem_verify
 # check autostats
 test: autostats
 test: enable_autovacuum