Geodatabase Replication for Utilities Tom DeWitte Solution Architect ESRI Utilities Team

Transcription

1 Geodatabase Replication for Utilities Tom DeWitte Solution Architect ESRI Utilities Team 1

2 Common Data Management Issues for Utilities Utilities are a distributed organization with the need to maintain data at multiple locations Outsourcing of Engineering Services Sharing Data with Remote Facilities Updating the Outage Mgmt Server Engineering Dept Central Office GIS Data Server LAN Outage Mgmt Data Server Outage Mgmt Data Server Utility Facility Utility Facility Service Area Office Service Area Office 2

3 Outsourcing of Engineering Services Data Management Issues Updates to Asset information are performed at the offsite Engineering facility. Outsourcing of Engineering Services Utility staff require current information to safely and accurately perform their jobs. Engineering Dept How to get data updates from the Engineering facility to local facility?? Utility Facility Utility Facility 3

4 Sharing Data with Remote Facilities Data Management Issues Updates to Asset information are received/performed at Central Facility. Utility staff require current information to safely and accurately perform their jobs. Sharing Data with Remote Facilities Central Office Network Bandwidth between Central Office and remote facility is insufficient to support live access to GIS data server at Central office. How to get data to remote offices when bandwidth is limited?? Example: A T-1 line max capacity = 1.54Mb/sec. Service Area Office Service Area Office 1 GIS desktop user requires = 0.8 Mb/sec 4

5 Updating the Outage Management Server Data Management Issues A utilitie s response to a outage event requires current information about field assets. Updating the Outage Mgmt Server An outage Management System requires a redundant data source to ensure data availabilty during an outage event. GIS Data Server LAN Data editors maintain data on a separate server then the Outage Management server. How to automatically push updates from GIS Data server to Outage Mgmt servers??? Outage Mgmt Data Server Outage Mgmt Data Server 5

6 How Does Geodatabase Replication Solve these Data Management Issues? GDB Replication provides the ability to automatically transmit data changes between the multiple data servers. GDB Replication GDB Replication GDB Replication GDB Replication 6

7 GDB Replication and Outsourcing of Engineering Services GDB Replication provides the ability to: Transmit only the data changes from the Engineering data server to the Utility data server. Outsourcing of Engineering Services Editors LAN LAN Engineering GIS Database Server Provides tools to transmit changes across either connected or disconnected networks. Editors Internet/ WAN GDB Replication management tools are provided with ArcEditor 9.2. Viewers Viewers LAN LAN Utility GIS Database Server 7

8 GDB Replication and Sharing with Remote Facilities GDB Replication provides the ability to: Allow all or part of the geodatabase to be replicated Replicate only a subset of the featureclasses or featuredatasets. Replicate only the data changes within a specified geography (i.e. service area). Data Sharing with Remote Facilities Central Office GIS Database Server WAN LAN LAN WAN Transmit data changes between all three levels of ArcSDE servers Enterprise SDE Workgroup SDE Personal SDE File Geodatabase (9.3)* *For one-way replication only Remote Facility GIS Database Viewers Viewers Remote Facility GIS Database Viewers Viewers 8

9 GDB Replication and Updating the Outage Mgmt Server GDB Replication provides the ability to: Have a single geodatabase participate in multiple replicas. Allow users to edit the geodatabases independently and synchronize them as needed. Updating the Outage Mgmt Server GIS Data Server LAN Synchronization process can be easily automated with Geoprocessing tools. Outage Mgmt Data Server Outage Mgmt Data Server 9

10 What is Geodatabase Replication? A set of data management tools bundled into ArcEditor 9.2 and ArcInfo 9.2 applications. Built on-top of SDE versioning environment. A database (Oracle, SQL Server, DB2) independent form of replication. Example: Allows data changes on an Oracle server to be sent to a SQL Server Express database. A single geodatabase can participate in multiple replicas. 10

11 Geodatabase Replication - Concepts Basic replication relationship is between two replicas : A Child Replica is created from a Parent Replica. Parent Replica_A Child Replica_A You can replicate : A specific version Specific datasets A subset of features in the chosen datasets 11

12 Geodatabase Replication Types Check out / Check in Parent ArcSDE Once Only Child ArcSDE, Personal, File GDB Two Way Parent ArcSDE Multiple Times Child ArcSDE One Way Parent ArcSDE Multiple Times Child ArcSDE (File GDB in 9.3) 12

13 Distributing Data Geodatabase Replication can be used in conjunction with other data distribution techniques Example: Use geodatabase replication to synchronize changes between offices Use mobile ADF for field workers with light weight mobile devices Use geodatabase replication for field workers who need ArcGIS desktop or engine in the field Main Office Replication Field Office Web Services Mobile ADF Replication Mobile ADF 13

14 Geodatabase Replication All geodatabase replication workflows are supported on a LAN or a WAN LAN - Use connections to your local geodatabases WAN - Use ArcGIS Server and geodata web services to access remote geodatabases Supports connected and disconnected environments Connected The geodatabases are on the same network (LAN or WAN) Need to access both geodatabases to create and synchronize replicas Disconnected Geodatabases are not on the same network Replicas are created and synchronize through file exchange (i.e. delta files are used to synchronize changes) 14

15 Demo 1 way replication between 2 ArcSDE Databases 15

16 Geodatabase Replication Getting Started Use models or scripts for replicas you plan to create on a regular basis You can use the create replica tool from geoprocessing tools to build models Consider using the following replica creation options Re-use schema (check-out replicas) uses existing schema Register only replicates pre-copied data Relationship classes processing is optional Schedule Synchronizations You can use geoprocessing models exported to python and the windows scheduler Consider synchronization order 16

17 Geodatabase Replication Getting Started Integrate synchronization with version management strategy Synchronize before running reconcile and compress services Network speed Use geodatabases directly over fast networks (LAN) Use ArcGIS server and geodata services on slower networks (WAN i.e. DSL) Use disconnected synchronization techniques over very slow networks (slow dial-up modem) or where there is no network connectivity 17

18 Geodatabase Replication - Summary Allows data to be automatically maintained in multiple locations. A set of data management tools you likely already have (ArcEditor 9.2). Personal SDE is also included with ArcEditor 9.2 Designed to work within, LAN and WAN and disconnected network environments. Works on-top of versioned SDE environment 18

19 Questions 19