diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..982eb95
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<constraints>
+  <hardware>
+    <memory>
+      <size unit="G">4</size>
+    </memory>
+  </hardware>
+  <overwrite>
+    <conditions>
+      <arch>s390x</arch>
+    </conditions>   
+  <hardware>
+    <memory>
+      <size unit="G">8</size>
+    </memory>
+   </hardware>
+ </overwrite>
+</constraints>
+
diff --git a/postgresql12.changes b/postgresql12.changes
index 23e1d8b..d9d512d 100644
--- a/postgresql12.changes
+++ b/postgresql12.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Oct 21 13:24:26 UTC 2021 - Sarah Kriesch <sarah.kriesch@opensuse.org>
+
+- boo#1190740: Add constraints file with 8GB memory for s390x as 
+  a workaround for a memory issue with LLVM
+
 -------------------------------------------------------------------
 Mon Sep 27 14:15:20 UTC 2021 - Reinhard Max <max@suse.com>
 
diff --git a/postgresql12.spec b/postgresql12.spec
index 4a44b1d..874cad4 100644
--- a/postgresql12.spec
+++ b/postgresql12.spec
@@ -1,5 +1,5 @@
 #
-# spec file for package postgresql12
+# spec file
 #
 # Copyright (c) 2021 SUSE LLC
 #
@@ -154,7 +154,7 @@ Provides:       postgresql = %version-%release
 Provides:       postgresql-implementation = %version-%release
 Requires:       %libpq >= %version
 Requires(post): postgresql-noarch >= %pgmajor
-Requires(postun): postgresql-noarch >= %pgmajor
+Requires(postun):postgresql-noarch >= %pgmajor
 # At this point we changed the package layout on SLE and conflict with
 # older releases to get a clean cut.
 Conflicts:      postgresql-noarch < 12.0.1
@@ -243,7 +243,7 @@ Provides:       %pgname-server-devel = %version-%release
 Provides:       postgresql-server-devel = %version-%release
 Provides:       postgresql-server-devel-implementation = %version-%release
 Requires(post): postgresql-server-noarch >= %pgmajor
-Requires(postun): postgresql-server-noarch >= %pgmajor
+Requires(postun):postgresql-server-noarch >= %pgmajor
 Requires:       %pgname-devel = %version
 Requires:       %pgname-server = %version-%release
 # Installation of postgresql??-devel is exclusive
@@ -302,10 +302,10 @@ Recommends:     %{name}-llvmjit
 Provides:       postgresql-server-implementation = %version-%release
 Requires:       %libpq >= %version
 Requires(pre):  postgresql-server-noarch >= %pgmajor
-Requires(preun): postgresql-server-noarch >= %pgmajor
-Requires(postun): postgresql-server-noarch >= %pgmajor
+Requires(preun):postgresql-server-noarch >= %pgmajor
+Requires(postun):postgresql-server-noarch >= %pgmajor
 Requires(post): postgresql-noarch >= %pgmajor
-Requires(postun): postgresql-noarch >= %pgmajor
+Requires(postun):postgresql-noarch >= %pgmajor
 
 %description server
 PostgreSQL is an advanced object-relational database management system