Added note from v13 to v16

Author: nidhibhammar

product_docs/docs/epas/13/upgrading/04_upgrading_an_installation_with_pg_upgrade/03_upgrading_to_advanced_server.mdx

@@ -198,6 +198,10 @@ If `pg_upgrade` alerts you to a missing component, you can use StackBuilder Plus
 
 When `pg_upgrade` has confirmed that the clusters are compatible, you can perform a version upgrade.
 
+!!!note
+If you are using any extensions that maintain a constant connection to the database, such as `edb_wait_states`, please disable them before attempting the actual `pg_upgrade`. No connections should be established to the database during the upgrade.
+!!!
+
 **Step 7 - Run pg_upgrade**
 
 After confirming that the clusters are compatible, you can invoke `pg_upgrade` to upgrade the old cluster to the new version of Advanced Server.

product_docs/docs/epas/14/upgrading/04_upgrading_an_installation_with_pg_upgrade/03_upgrading_to_advanced_server.mdx

@@ -196,6 +196,10 @@ If `pg_upgrade` alerts you to a missing component, you can use StackBuilder Plus
 
 When `pg_upgrade` has confirmed that the clusters are compatible, you can perform a version upgrade.
 
+!!!note
+If you are using any extensions that maintain a constant connection to the database, such as `edb_wait_states`, please disable them before attempting the actual `pg_upgrade`. No connections should be established to the database during the upgrade.
+!!!
+
 **Step 7 - Run pg_upgrade**
 
 After confirming that the clusters are compatible, you can invoke `pg_upgrade` to upgrade the old cluster to the new version of EDB Postgres Advanced Server.

product_docs/docs/epas/15/upgrading/04_upgrading_an_installation_with_pg_upgrade/03_upgrading_to_advanced_server.mdx

@@ -186,6 +186,10 @@ If `pg_upgrade` alerts you to a missing component, you can use StackBuilder Plus
 
 After `pg_upgrade` confirms that the clusters are compatible, you can perform a version upgrade.
 
+!!!note
+If you are using any extensions that maintain a constant connection to the database, such as `edb_wait_states`, please disable them before attempting the actual `pg_upgrade`. No connections should be established to the database during the upgrade.
+!!!
+
 ## Step 7 - Run pg_upgrade
 
 After confirming that the clusters are compatible, you can invoke `pg_upgrade` to upgrade the old cluster to the new version of EDB Postgres Advanced Server.

product_docs/docs/epas/16/upgrading/major_upgrade/03_upgrading_to_advanced_server.mdx

@@ -186,6 +186,10 @@ If `pg_upgrade` alerts you to a missing component, you can use StackBuilder Plus
 
 After `pg_upgrade` confirms that the clusters are compatible, you can perform a version upgrade.
 
+!!!note
+If you are using any extensions that maintain a constant connection to the database, such as `edb_wait_states`, please disable them before attempting the actual `pg_upgrade`. No connections should be established to the database during the upgrade.
+!!!
+
 ## Step 7 - Run pg_upgrade
 
 After confirming that the clusters are compatible, you can invoke `pg_upgrade` to upgrade the old cluster to the new version of EDB Postgres Advanced Server.