The lease timeout between avaiability group and the Windows Server Failover Cluster has expired

Hi,
I am having some issues where I get a lease timeout from time to time. I have a Windows 2012 Failover Cluster with 2 nodes and 2 SQL 2012 Always-on Availability Groups. Both nodes
are a physical machines and each node is the primary for an AG.
From what I understand if
the HealhCheckTimeout
is exceeded without the signal exchange the lease is declared 'expired' and the SQL Server resource dll reports that the SQL Server availability group no longer 'looks alive' to the Windows cluster manager. Here are the properties I have setup
which are the default settings:
LeaseTimeout - 20000
HealthCheckTimeout - 30000
VerboseLoging - 0>
FailureConditionLevel – 3
Here are the events that occur in the Application Event Viewer:
Event ID 19407:
The lease between availability group 'AG_NAME' and the Windows Server Failover Cluster has expired. A connectivity issue occurred between the instance of SQL Server and the Windows Server Failover
Cluster. To determine whether the availability group is failing over correctly, check the corresponding availability group resource in the Windows Server Failover Cluster.
Event ID 35285:
The recovery LSN (120881:37533:1) was identified for the database with ID 32. This is an informational message only. No user action is required.
SQl server logs are too long to post in this box but I can send them if you request.
The AG is setup to failover automatically but it did not failover. I am trying to figure out why the lease timed out. Thanks.

From what I've been able to find out, this is due to an issue with the procedure sp_server_diagnostics. It sounds like the cluster is expecting this procedure to regularly log good status "Clean" in the log files, but the procedure is designed not
to flood the logs with "Clean" messages, so only reports changes, and does not make an entry when the last status was "Clean" and the current status is "Clean". The result is that the cluster looks to be unresponsive. However, once it initiates
the failover, the primary machine responds, since it was never really down, and the failover operation stops.
The end result is that there really never is a failover, but the database becomes unavailable for a few minutes while this is resolved.
I'm going to try setting the cluster's failure condition level to 2 (instead of 3) and see if that prevents the down time.
blogs.msdn.com/b/sql_pfe_blog/archive/2013/04/08/sql-2012-alwayson-availability-groups-automatic-failover-doesn-t-occur-or-does-it-a-look-at-the-logs.aspx

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please post you question on failover clusters in the cluster forum. THey will explain how this works and point you at scipts.
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¯\_(ツ)_/¯

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Hello
Following are the basic differences as far as MM Module is concerned;
Pickup list - Batch where-used list display in transaction MB56
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Requirement prioritizations in materials management
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Mass maintenance of outline agreements
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u2022 Mass maintenance for scheduling agreements: transaction code MEMASSSA
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Delivery proposal - Full confirmation
External services: putting service items in the purchase order on hold (changed)
User can put purchase orders with service items on hold if these items do not contain any errors. Purchase orders with service items can also be put on hold if errors occur only at header level or as a result of the availability check.
Customizing transactions OX18 replaced by view
The assigned customizing transactions have been replaced by the following view in the following implementation guide activity in customizing for the enterprise structure: Assign plant to company code: transaction OX18 replaced by view V_T001K_Assign. One will find this activity in the implementation guide under the menu path "Enterprise Structure -> Assignment -> Logistics General -> Assign Plant to Company Code."
Goods receipt: new movement types in inventory management
The following new movement types are available in inventory management:
107: Goods receipt to valuated goods receipt blocked stock
109: Goods receipt from valuated goods receipt blocked stock
Prepayment of invoices
This functionality is characterized as follows:
u2022 User can trigger prepayment of vendor invoices in logistics invoice verification.
u2022 User use the prepayment function for vendors with whom organisation has a good, long-standing relationship.
u2022 The function enables payment soon after issue of the invoice and full exploitation of the date of required payment and existing cash discounts, by posting the vendor liabilities, taxes, and cash discounts in financial accounting in advance.
u2022 The software executes the payment of the invoice regardless of the relevant goods receipt and the outcome of the invoice verification check.
u2022 Most logistics invoice verification standard functions are not affected by the prepayment function.
u2022 When the software posts invoices, it continues to execute the standard checks.
u2022 If the software has already posted the prepayment document, user can make only restricted changes to the header fields of the invoice.
u2022 To ensure adequate and orderly financial accounting postings, a prepayment clearing account has been added to SAP ERP Central Component.
u2022 Upon prepayment, the software debits this account and then settles the account again after executing the check.
Purchasing accounting information to the former SAP Business Information Warehouse
u2022 With the transfer of the purchasing account information to the former SAP Business Information Warehouse component (whose functionality is now part of SAP Net Weaver), it is now possible to maintain Info Cubes, reports, and queries that can determine how and where the costs from purchasing documents have been assigned and controlled.
u2022 As part of the software, a new data source (2LIS_02_ACC) has been created and the purchasing extraction process extended to cover the account information for purchasing orders, schedule agreements, and contracts.
Automatic settlement of planned delivery costs with evaluated receipt settlement (MRDC)
u2022 A new report (RMMR1MDC), available within the logistics invoice verification, can be used to automatically settle planned delivery costs.
u2022 To invoke the report, from the SAP easy access screen, choose the menu path "Logistics -> Materials Management -> Logistics Invoice Verification -> Automatic Settlement -> Automatic Delivery Cost Settlement" (transaction code MRDC).
u2022 Functionality for report RMMR1MRS is enhanced.
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u2022 To do so, set the relevant indicator on the initial screen of the report.
Parking service items
It is now possible to put service orders without errors or with commitment errors on hold.
Report MB5B : Stock on Posting Date
u2022 This Report is available with "Non-Hierarchy" display option which provides details of Opening, Receipt, Issue and Closing balances of Stock with quantity and value both for a given period.
u2022 This functionality is not available in Release 4.7.
Stock Transfer Between Storage Locations
u2022 Function of stock transport orders between storage locations is available from ECC 6.0 onwards.
u2022 As a result of which user can input issuing storage location with supplying plant.
u2022 Facility of using different delivery types for different issuing storage locations is available.
u2022 Shipping Point data can also be determined based on the issuing storage location.
If u want to know more go through the following links
http://solutionbrowser.erp.sap.fmpmedia.com/
http://help.sap.com/saphelperp2005vp/helpdata/en/43/6880cbb88f297ee10000000a422035/frameset.htm_
https://wiki.sdn.sap.com/wiki/display/ERP6/ERP2005+Upgrade
Regards
Gregory Mathews

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from the cluster tables assigned to a cluster are thus stored in a single common table in the database.A cluster contains a transparent cluster key which must be located at the start of the key of all logical cluster tables to be included in the cluster. As well, a cluster contains a long field (VARDATA), which contains the
data of the cluster tables for this key. If the data does not fit into a field, continuation records are created.
Field Type Description
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input field with the radio button selected next to Tables. Then, click on the Display button at the bottom of the screen, or press the F7 function key, or, alternatively,
select Dictionary object Display from the menu.
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¨ Name of the user who made the last change, and the date of the change.
¨ Master language.
¨ Table status. On the screen, you can see this table is saved and active.
¨ Development class. For information on development classes, refer to Chap. 6.
Delivery class, which sets the maintenance group for the table. It controls how tables will behave during client copy procedures, upgrades, and so forth.¨
Tab. Maint. Allowed flag, which indicates whether you can generate a screen for maintaining table entries.
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¨ Field name.
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¨ Basic data type.
¨ Length.
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¨ Short text, describing the field.
Additional information about the table can be displayed by selecting the corresponding functions from the menu or directly from the application toolbar, such as keys, indexes, or technical settings
Standard table:
The key access to a standard table uses a sequential search. The time required for an access is linearly dependent on the number of entries in the internal table.
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Sorted table:
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Hash table:
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Index table:
The table can be a standard table or a sorted table.
Index access is allowed to such an index table. Index tables can be used to define the type of generic parameters of a FORM (subroutine) or a function module.
Just have a look at these links:
http://help.sap.com/saphelp_nw04/helpdata/en/90/8d7304b1af11d194f600a0c929b3c3/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/74/83015785d811d295a800a0c929b3c3/frameset.htm
Regards
Sreeni

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