Table of Contents

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  1. Preface
  2. Introduction to Informatica Edge Data Streaming
  3. Licenses
  4. Using Informatica Administrator
  5. Creating and Managing the Edge Data Streaming Service
  6. Edge Data Streaming Entity Types
  7. Edge Data Streaming Nodes
  8. Data Connections
  9. Working With Data Flows
  10. Managing the Edge Data Streaming Components
  11. Security
  12. High Availability
  13. Disaster Recovery
  14. Monitoring Edge Data Streaming Entities
  15. Troubleshooting
  16. Frequently Asked Questions
  17. Regular Expressions
  18. Command Line Program
  19. Configuring Edge Data Streaming to Work With a ZooKeeper Observer
  20. Glossary

User Guide

User Guide

OPC DA Source Service Properties

To add an OPC DA source service, use the OPC DA source service type.
You can configure the following properties for the File source service type:
Entity Name
Name of the OPC DA source service. Maximum length is 32 characters.
Description
Description of the OPC DA source service. Maximum length is 256 characters.
Host Name
Host name of the machine where OPC server is installed or configured.
Domain
Domain name of the machine where OPC server is installed or configured.
User Name
User name to connect to the machine where the OPC server is installed or configured.
Password
Password to connect to the machine where the OPC server is installed or configured.
OPC Server
You can specify one of the following identifiers for the OPC DA server:
  • Programmatic Identifier (ProgID).
  • Class Identifier (CLSID).
Programmatic Identifier (ProgID)
The ProgID of the OPC DA server. Specify this ID if you select Programmatic Identifier (ProgID) in OPC Server Details.
Class Identifier (CLSID)
The CLSID of the COM class object of the OPC DA server. Specify this ID if you select Class Identifier (CLSID) in OPC Server Details.
Tag List Specified As
Format in which the list of tags is specified. Select one of the following formats:
  • Text
  • File
List of Tags
List of tags to be read by the OPC client, specified as a JSON array.
Path for Tags File
File containing list of tags to be read by the OPC client, specified as JSON array.
Polling Interval (milliseconds)
Interval at which the source service reads tags from the OPC DA server. Specify a value that is less than the rate at which the OPC DA server publishes data. Though this avoids data loss, it could result it in data duplication.
Maximum Event Size
Maximum length of data that the source service can read at a time, in bytes. Default is 8192. Minimum value is 1. Maximum value is 51200.
Retry on Failure
Indicates that the source service should try to open or read from the source if the operation fails the first time.
Number of Retries
Time in milliseconds between successive retries. Specify a value of more than 200 milliseconds.
Delay between Retries
Time in milliseconds between successive retries.
Persist Data
Persist the data from the source locally so that the source service can continue to process data even if the target is not available.
Persistence Options
You can configure the following persistence options:
  • batchSizeInBytes. The batch size of the events in bytes after which the data is written to the persistent store. Specify a value of 0 if you want to write the data to the persistent store immediately. Default is 262144 bytes.
  • flushInterval. The interval in milliseconds after which the source services writes data to the persistent store. Default is 5000 milliseconds.
  • maxDataFiles. The maximum number of data files that the source service can keep in the persistent store. After the number of files exceed this number, a rollover occurs. Default is 10.
  • maxDataFileSize. The maximum size of each data file in bytes. When the file reaches the specified size, a file rollover occurs. Default is 1073741824.
  • maxQueueSizeInBytes. The maximum size of data that is unsent or has not received acknowledgment in bytes that can be stored in the persistent store. If the specified size is exceeded, the source service does not read data from the source. If you specify a value of 0, the unsent data can be as much as the value of maxDataFiles times maxDataFileSize. Default is unlimited size.
Statistics
You can monitor the following statistics:
  • Bytes Sent. The number of bytes sent by the source service.
  • Events Sent. The number of events sent by the source service.
  • Events to be Sent. The number of events that the source service is yet to send.
  • Events not Delivered. Number of events that the source service did not deliver.
  • Send Rate (Per Sec.). The number of bytes sent every second.
  • OPC DA Events Read. The number of events read by the source service


Updated March 19, 2019


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