diff --git a/inventory/host_vars/db-koji01.iad2.fedoraproject.org b/inventory/host_vars/db-koji01.iad2.fedoraproject.org
index 999430df93..a326200e48 100644
--- a/inventory/host_vars/db-koji01.iad2.fedoraproject.org
+++ b/inventory/host_vars/db-koji01.iad2.fedoraproject.org
@@ -46,4 +46,5 @@ nrpe_procs_crit: 700
 # we backup the backup on db-koji01 until we can replace now
 db_backup_dir: ['/backups']
 shared_buffers: "15GB"
-effective_cache_size: "45GB"
+effective_cache_size: "4GB"
+max_stack_depth: "6MB"
diff --git a/roles/postgresql_server/templates/postgresql.conf-12 b/roles/postgresql_server/templates/postgresql.conf-12
index 114773ed1d..8bfe6dc5f0 100644
--- a/roles/postgresql_server/templates/postgresql.conf-12
+++ b/roles/postgresql_server/templates/postgresql.conf-12
@@ -412,7 +412,11 @@ min_wal_size = 80MB
 
 #min_parallel_table_scan_size = 8MB
 #min_parallel_index_scan_size = 512kB
+{% if effective_cache_size is defined %}
+effective_cache_size = {{ effective_cache_size }}
+{% else %}
 #effective_cache_size = 4GB
+{% endif %}
 
 # - Genetic Query Optimizer -