diff --git a/api/src/main/java/org/apache/cloudstack/api/command/admin/config/UpdateCfgCmd.java b/api/src/main/java/org/apache/cloudstack/api/command/admin/config/UpdateCfgCmd.java
index acc0d79baae..0770f3c5a54 100644
--- a/api/src/main/java/org/apache/cloudstack/api/command/admin/config/UpdateCfgCmd.java
+++ b/api/src/main/java/org/apache/cloudstack/api/command/admin/config/UpdateCfgCmd.java
@@ -50,7 +50,7 @@ public class UpdateCfgCmd extends BaseCmd {
     @Parameter(name = ApiConstants.NAME, type = CommandType.STRING, required = true, description = "the name of the configuration")
     private String cfgName;
 
-    @Parameter(name = ApiConstants.VALUE, type = CommandType.STRING, description = "the value of the configuration", length = 4095)
+    @Parameter(name = ApiConstants.VALUE, type = CommandType.STRING, description = "the value of the configuration", length = 4096)
     private String value;
 
     @Parameter(name = ApiConstants.ZONE_ID,
diff --git a/engine/schema/src/main/java/com/cloud/user/AccountDetailVO.java b/engine/schema/src/main/java/com/cloud/user/AccountDetailVO.java
index f4b356730ec..71ad765e618 100644
--- a/engine/schema/src/main/java/com/cloud/user/AccountDetailVO.java
+++ b/engine/schema/src/main/java/com/cloud/user/AccountDetailVO.java
@@ -42,7 +42,7 @@ public class AccountDetailVO implements InternalIdentity {
     private String name;
 
     @Encrypt
-    @Column(name = "value")
+    @Column(name = "value", length=4096)
     private String value;
 
     protected AccountDetailVO() {
diff --git a/engine/schema/src/main/resources/META-INF/db/schema-41700to41710.sql b/engine/schema/src/main/resources/META-INF/db/schema-41700to41710.sql
index abbc99a53bc..7b8ed8f6848 100644
--- a/engine/schema/src/main/resources/META-INF/db/schema-41700to41710.sql
+++ b/engine/schema/src/main/resources/META-INF/db/schema-41700to41710.sql
@@ -126,3 +126,6 @@ CREATE VIEW `cloud`.`domain_router_view` AS
         `cloud`.`async_job` ON async_job.instance_id = vm_instance.id
             and async_job.instance_type = 'DomainRouter'
             and async_job.job_status = 0;
+
+-- PR #6080 Change column `value` size from 255 to 4096 characters, matching the API "updateConfiguration" "value" size
+ALTER TABLE `cloud`.`account_details` MODIFY `value` VARCHAR(4096) NOT NULL;
\ No newline at end of file
diff --git a/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java b/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
index e59ddaeac9a..d75d03d85a4 100644
--- a/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
+++ b/plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
@@ -536,6 +536,7 @@ public class LibvirtComputingResource extends ServerResourceBase implements Serv
     }
 
     public MemStat getMemStat() {
+        _memStat.refresh();
         return _memStat;
     }