- Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers
- Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand
- OverflowAI GenAI features for Teams
- OverflowAPI Train & fine-tune LLMs
- Labs The future of collective knowledge sharing
- About the company Visit the blog
Collectives™ on Stack Overflow
Find centralized, trusted content and collaborate around the technologies you use most.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Get early access and see previews of new features.
Staging Ground badges
Earn badges by improving or asking questions in Staging Ground.
Using mapping variables in a post-session command
Workflow generates three files (header, detail, trailer) which I combine via post-session command. There are two variables which are set in my mapping, which I want to use in the post-session command like so:
But this doesn't work and the values are empty, so I get OUTPUT_20151117__.dat.
I've tried creating workflow variables and assigning them via pre-session variable assignment, but this doesn't work either.
What am I missing? Or was this never going to work?
- informatica
3 Answers 3
Can you see the values assigned to those variables on the session log or do they appear empty as well?
- The values do show up at the start of the run when the persistent values are retrieved from the repository, and again at the end when the new values are saved to the repository. – Toby Nieboer Commented Nov 17, 2015 at 22:10
- I assume your mapping variables are retrieved from the repository but are never transferred up to the workflow. – pgruetter Commented Nov 19, 2015 at 10:28
Creating workflow variables is what I'd try, but you need to assign the values with the post -session variable assignment.
- I tried that as well, but still no dice. I concluded that workflow and mapping variables couldn't be used in a post-session command, and found a workaround. – Toby Nieboer Commented Nov 19, 2015 at 3:46
Basically, you store values in a variable in your mapping and pass the values up to the workflow after the session succeeded. Here is how you can achieve that:
- Define a Workflow variables $$VAR1 and $$VAR2
- Define the variables in your mapping, but chose different names! So i.e. $$M_VAR1 and $$M_VAR2
- In your mapping, assign the values to your mapping variables through the functions SetVariable(var as char, value as data type)
- In your session, select Post-session on success variable assignment.
In step 4, the current value from $$M_VAR1 (mapping variable) is stored in your workflow variable $$VAR1 and can then be used in the workflow in command tasks like you asked.
A few notes:
- I'm not 100% sure if the variable assignment is exectured before the post-session command. If the command is executed first, you could execute your command tasks in an external command task after your session.
- Pre-Session variable assignment is used if you pass a value from a workflow variable down to a mapping variable. You can use this if your variables $$VAR1 or $$VAR2 are used inside another mapping and need to be initialized at the beginning.
Your Answer
Reminder: Answers generated by artificial intelligence tools are not allowed on Stack Overflow. Learn more
Sign up or log in
Post as a guest.
Required, but never shown
By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy .
Not the answer you're looking for? Browse other questions tagged informatica or ask your own question .
- The Overflow Blog
- Is this the real life? Training autonomous cars with simulations
- Featured on Meta
- Preventing unauthorized automated access to the network
- Upcoming initiatives on Stack Overflow and across the Stack Exchange network...
- Feedback Requested: How do you use the tagged questions page?
- Proposed designs to update the homepage for logged-in users
Hot Network Questions
- Can I vacuum seal my homemade bone broth in a Ball jar?
- A SF short story (probably by Asimov) about a neutron star with a pun : "star mangled spanner"
- Does "people who own cars" mean "people who own cars in general" (so 1+ cars) or "people who own 2+ cars"?
- Can I give access to my Xbox while prohibiting purchases?
- Does Wigner rotation mean that in special relativity it is possible to rotate an object without applying any torque to it?
- What was the poison gas created in "Armadale" by Wilkie Collins?
- Homeowners insurance requiring auto Insurance
- Counting with trees
- "I am nothing" is the epitome of humility. Why not "I am worse than nothing"?
- Did 60 Minutes edit one of Kamala Harris' interview answers?
- How many dots are there?
- Reality Check - How possible is it for a single human to reach "Space Engineers" level of technological prowess?
- Why do some nations hold close ties with their former colonies and are there those who don't?
- Can you espalier peach, plum and cherry trees?
- How would an ancient Chinese necromancer delay their zombies from rotting?
- Clock uncertainty / building a better clock
- Euclid’s “Elements” Redux Callahan's Problem 3
- ABRSM Grade 8 theory true or false question
- Would the Borg react to an escape pod?
- How to read inner-tube size ranges on Conti tubes?
- What rules TeX uses for space between symbols in equation?
- Offering shelter to homeless employees
- Need to figure out the resistor requirements in this parallel circuit
- What is the correct way to replace this switch?
- English English
- Español Spanish
- Deutsch German
- Français French
- 日本語 Japanese
- Português Portuguese
- PowerCenter
Advanced Workflow Guide
- Updated : August 2022
- PowerCenter 10.4.0
- All Products
Rename Saved Search
Confirm Deletion
Are you sure you want to delete the saved search?
Table of Contents
- Understanding Pipeline Partitioning Overview
- Partition Points
- Partitioning Multiple Input Group Transformations
- Partition Types
- Configuring Dynamic Partitioning
- Rules and Guidelines for Dynamic Partitioning
- Using Dynamic Partitioning with Partition Types
- Configuring Partition-Level Attributes
- Cache Partitioning
- Mapping Variables in Partitioned Pipelines
- Before You Create a Session
- After You Create a Session with Multiple Partitions
- Partition Restrictions for PowerExchange
- Adding Partition Points to a Pipeline
- Configuring a Partition Point
- Edit Partition Point
- Edit Partition Key
- Non-Partition Points Node
- Partition Points Overview
- Rules and Guidelines for Adding and Deleting Partition Points
- Entering an SQL Query
- Entering a Filter Condition
- Rules and Guidelines for Partitioning File Sources
- Using One Thread to Read a File Source
- Using Multiple Threads to Read a File Source
- Configuring Sessions to Use a Single Thread
- Configuring Sessions to Use Multiple Threads
- Configuring Concurrent Read Partitioning
- Database Compatibility
- Configuring Connection Settings
- Configuring Commands for Partitioned File Targets
- Configuring Merge Options
- Working with Multiple Partitions
- Creating Partition Points
- One Input Group
- Multiple Input Groups
- Partitioning Sorted Joiner Transformations
- Using 1:n Partitions
- Using n:n Partitions
- Using Sorter Transformations
- Add a Hash Auto-keys Partition Upstream of the Sort Origin
- Use n:n Partitions
- Sharing Partitioned Caches
- Partitioning Pipeline Lookup Transformation Cache
- Partitioning Sequence Generator Transformations
- Configuring Sorter Transformation Work Directories
- Partitioning XML Generator Transformations
- Restrictions for Numerical Functions
- Setting Partition Types in the Pipeline
- Setting Partition Types
- Database Partitioning with One Source
- Partitioning a Source Qualifier with Multiple Sources
- Integration Service Handling with Source Database Partitioning
- Rules and Guidelines for Source Database Partitioning
- Rules and Guidelines for Target Database Partitioning
- Hash Auto-Keys Partition Type
- Hash User Keys Partition Type
- Adding a Partition Key
- Adding Filter Conditions
- Rules and Guidelines for Creating Key Ranges
- Pass-Through Partition Type
- Round-Robin Partition Type
- Pushdown Optimization Overview
- Running Source-Side Pushdown Optimization Sessions
- Running Target-Side Pushdown Optimization Sessions
- Integration Service Behavior with Full Optimization
- Active and Idle Databases
- Pushdown Optimization to Databases Using the ODBC Connection
- Comparing the Output of the Integration Service and Databases
- Rules and Guidelines for IBM DB2
- Rules and Guidelines for Netezza
- Rules and Guidelines for Teradata
- Rules and Guidelines for Vertica
- Rules and Guidelines for Microsoft Azure SQL Data Warehouse
- Incompatible Users for Database Connections
- Qualifying Names of Tables in Idle Databases
- Date Compatibility
- Operator Compatibility
- Variable Compatibility
- Amazon Redshift Function Exceptions
- Snowflake Function Exceptions
- Greenplum Function Exceptions
- Netezza Function Exceptions
- PostgreSQL Function Exceptions
- Teradata Function Exceptions
- Vertica Function Exceptions
- Functions for Enterprise Applications
- Relational Database Function Exceptions
- Error Handling
- Working with Slowly Changing Dimensions
- Sequence Creation Example
- View Creation Example
- Identifying Orphaned Objects Using Session Logs
- Identifying Orphaned Objects Using an SQL Query
- Removing the Orphaned Objects
- Using the $$PushdownConfig Mapping Parameter
- Pushdown Options
- Pushdown Optimization for Pass-Through Partitioning
- Pushdown Optimization for Key-Range Partitioning
- Example of Pushdown Optimization for Session with Multiple Partitions
- Rules and Guidelines for Sessions with Multiple Partitions
- Target Load Rules
- Viewing Pushdown Groups
- General Pushdown Restrictions
- Aggregator Transformation
- Expression Transformation
- Filter Transformation
- Joiner Transformation
- Unconnected Lookup Transformation
- Lookup Transformation with an SQL Override
- Router Transformation
- Sequence Generator Transformation
- Sorter Transformation
- Source Qualifier Transformation with an SQL Override
- Union Transformation
- Update Strategy Transformation
- Real-time Processing Overview
- Messages and Message Queues
- Web Service Messages
- Change Data from PowerExchange CDC Sources
- Configuring Real-time Sessions
- Message Count
- Reader Time Limit
- Flush Latency
- Commit Type
- Prerequisites
- Steps to Enable Message Recovery
- Message Recovery for JMS and WebSphere MQ Sources
- Message Recovery for SAP IDoc, TIBCO, and webMethods Sources
- Message Recovery
- Session Recovery Data Flush
- PM_REC_STATE Table
- Message Processing
- Recovery Ignore List
- Stopping Real-time Sessions
- Restarting Real-time Sessions
- Recovering Real-time Sessions
- Restart and Recover Commands
- Rules and Guidelines for Real-time Sessions
- Rules and Guidelines for Message Recovery
- Real-time Processing Example
- PowerCenter Real-time Products
- Commit Points Overview
- Target-Based Commits
- Determining the Commit Source
- Connecting XML Sources in a Mapping
- Connecting Multiple Output Group Custom Transformations in a Mapping
- Rollback Evaluation
- Roll Back Open Transaction
- Roll Back on Error
- Roll Back on Failed Commit
- Transformation Scope
- Understanding Transaction Control Units
- Rules and Guidelines for Working with Transaction Control
- Creating Target Files by Transaction
- Setting Commit Properties
- Error Log Code Pages
- PMERR_TRANS
- Understanding the Error Log File
- Configuring Error Log Options
- Workflow Recovery Overview
- Workflow State of Operation
- Session State of Operation
- Creating Target Recovery Tables
- Recovery Options
- Configuring Suspension Email
- Recovering Stopped, Aborted, and Terminated Workflows
- Recovering Suspended Workflows
- Command Task Strategies
- Session Task Strategies
- Automatically Recovering Terminated Tasks
- Resuming Sessions
- Relational Source
- Flat File Source
- Output is Deterministic
- Output is Repeatable
- Configuring a Mapping for Recovery
- Recovering a Workflow Using the Workflow Monitor
- Recovering a Session
- Recovering a Workflow From a Session
- Configuring Recovery to Resume from the Last Checkpoint
- Unrecoverable Workflows or Tasks
- Stopping and Aborting Overview
- Threshold Errors
- Fatal Errors
- Integration Service Handling for Session Failure
- Stopping or Aborting a Session Task
- Steps to Stop or Abort
- Concurrent Workflows Overview
- Recovering Workflow Instances by Instance Name
- Rules and Guidelines for Running Concurrent Instances of the Same Instance Name
- Running Concurrent Web Service Workflows
- Configuring Workflow Instances of the Same Name
- Recovering Workflow Instances of the Same Name
- Accessing the Run Instance Name or Run ID
- Steps to Configure Concurrent Workflows
- Starting Workflow Instances from Workflow Designer
- Starting One Concurrent Workflow
- Creating Workflow Instances from the Command Line
- Stopping or Aborting Concurrent Workflows
- Monitoring Concurrent Workflows
- Log Files for Unique Workflow Instances
- Log Files for Workflow Instances of the Same Name
- Rules and Guidelines for Concurrent Workflows
- Grid Processing Overview
- Running Workflows on a Grid
- Running Sessions on a Grid
- Forming Partition Groups Without Resource Requirements
- Forming Partition Groups With Resource Requirements
- Rules and Guidelines for Creating Partition Groups
- Working with Caches
- Grid Connectivity and Recovery
- Rules and Guidelines for Configuring a Workflow or Session to Run on a Grid
- Load Balancer Overview
- Assigning Service Levels to Workflows
- Assigning Resources to Tasks
- Workflow Variables Overview
- Using Predefined Workflow Variables in Expressions
- Evaluating Condition in a Workflow
- Evaluating Task Status in a Workflow
- Evaluating Previous Task Status in a Workflow
- Workflow Variable Start and Current Values
- Datatype Default Values
- Creating User-Defined Workflow Variables
- Persistent Worklet Variables
- Overriding the Initial Value
- Rules and Guidelines for Using Worklet Variables
- Passing Variable Values between Worklets
- Configuring Variable Assignments
- Changing the Session Log Name
- Changing the Target File and Directory
- Changing Source Parameters in a File
- Changing Connection Parameters
- Getting Run-Time Information
- Rules and Guidelines for Creating File Parameters and Database Connection Parameters
- Mapping Parameters and Variables in Sessions
- Passing Parameter and Variable Values between Sessions
- Parameter Files Overview
- Parameter and Variable Types
- Where to Use Parameters and Variables
- Overriding Connection Attributes in the Parameter File
- Parameter File Sections
- Null Values
- Sample Parameter File
- Entering a Parameter File in the Workflow Properties
- Entering a Parameter File in the Session Properties
- Using Variables to Specify Session Parameter Files
- Using a Parameter File with pmcmd
- Parameter File Example
- Guidelines for Creating Parameter Files
- Troubleshooting Parameters and Parameter Files
- Tips for Parameters and Parameter Files
- Using FastExport Overview
- Verifying the Code Page Mapping File
- Step 2. Change the Reader
- Step 3. Change the Source Connection
- Step 4. Override the Control File (Optional)
- Rules and Guidelines for Using FastExport
- Before You Begin
- Loading Data to a Named Pipe
- Staging Data to a Flat File
- Partitioning Sessions with External Loaders
- Processing LOB Data
- IBM DB2 EEE External Loader
- Rules and Guidelines for IBM DB2 EEE External Loaders
- Setting Operation Modes
- Configuring Authorities, Privileges, and Permissions
- Loading Blank Spaces using the IBM DB2 EE External Loader
- IBM DB2 EE External Loader Return Codes
- Configuring IBM DB2 EEE External Loader Attributes
- Rules and Guidelines for Oracle External Loaders
- Loading Multibyte Data to Oracle
- Configuring Oracle External Loader Attributes
- Rules and Guidelines for Sybase IQ External Loaders
- Delimited Flat File Targets
- Fixed-Width Flat File Targets
- Configuring Sybase IQ External Loader Attributes
- Rules and Guidelines for Teradata External Loaders
- Overriding the Control File
- Configuring Teradata MultiLoad External Loader Attributes
- Configuring Teradata TPump External Loader Attributes
- Configuring Teradata FastLoad External Loader Attributes
- Configuring a Session to Write to a File
- Configuring File Properties
- Selecting an External Loader Connection
- Troubleshooting External Loading
- Rules and Guidelines for Using FTP
- Using FTP with Source Files
- Using FTP with Target Files
- Configuring SFTP in a Session
- Selecting an FTP Connection
- Configuring Source File Properties
- Partitioning FTP File Targets
- Session Caches Overview
- Cache Memory
- Naming Convention for Cache Files
- Cache File Directory
- Calculating the Cache Size
- Auto Cache Size
- Configuring a Numeric Cache Size
- Steps to Configure the Cache Size
- Configuring the Cache Size for Cache Partitioning
- Incremental Aggregation
- Configuring the Cache Sizes for an Aggregator Transformation
- Troubleshooting Aggregator Caches
- 1:n Partitioning
- n:n Partitioning
- Configuring the Cache Sizes for a Joiner Transformation
- Troubleshooting Joiner Caches
- Sharing Caches
- Configuring the Cache Sizes for a Lookup Transformation
- Configuring the Cache Sizes for a Rank Transformation
- Configuring the Cache Size for a Sorter Transformation
- Configuring the Cache Size for an XML Target
- Optimizing the Cache Size
- Incremental Aggregation Overview
- Integration Service Processing for Incremental Aggregation
- Reinitializing the Aggregate Files
- Finding Index and Data Files
- Partitioning Guidelines with Incremental Aggregation
- Configuring the Mapping
- Configuring the Session
- Session Log Interface Overview
- The Integration Service and the Session Log Interface
- Rules and Guidelines for Implementing the Session Log Interface
- INFA_InitSessionLog
- INFA_OutputSessionLogMsg
- INFA_OutputSessionLogFatalMsg
- INFA_EndSessionLog
- INFA_AbnormalSessionTermination
- Building the Library in UNIX
- Building the Library in Windows
- Using the External Session Log Library
- Understanding Buffer Memory Overview
- Using Session Configuration Objects for Memory Configuration
- Configuring Buffer Memory
- Session Cache Limits
- Configuring Automatic Memory Settings for Session Caches
- High Precision Data Overview
Assigning Variable Values in a Worklet
- Pre-worklet variable assignment. You can update user-defined worklet variables before a worklet runs. You can assign these variables the values of parent workflow or worklet variables or the values of mapping variables from other tasks in the workflow or parent worklet. You can update worklet variables with values from the parent of the worklet. Therefore, if a worklet is in another worklet within a workflow, you can assign values from the parent worklet variables, but not the workflow variables.
- Post-worklet variable assignment. You can update parent workflow or worklet variables after the worklet completes. You can assign these variables the values of user-defined worklet variables.
Are you sure you want to delete the comment?
Confirm Rejection
Enter the reason for rejecting the comment.
Are you sure to delete your comment?
IMAGES
VIDEO
COMMENTS
Sudi.S asked a question. March 3, 2013 at 3:53 PM. pre session variable assignment. Hi All, When I am changing a session to re useable , the. pre session variable assignment option is automatically getting disabled. However for non reusable session it is enabled.
There is also another reusable session, which is the first one in workflow can edit ". Pre-session variable assignment". But once I click the edit button, there is an "Unexpected Condition Detected" warning pop-up with following msg: Warning: Unexpected condition DSessVarAssgmtGrid.cpp. Contact Informatica Technical Support for assistance.
You can assign these parameters and variables the values of workflow or worklet variables in the parent workflow or worklet. Therefore, if a session is in a worklet within a workflow, you can assign values from the worklet variables, but not the workflow variables. You cannot update mapplet variables in the pre-session variable assignment.
Save the session. Hence, everytime the session starts, the value for workflow variable will be assigned to the mapping variable. This can also be achieved by using parameter files by setting the value of the mapping variable in the parameter file. If value for the mapping variable is set at both parameter file and presession variable assignment ...
This issue occurs because pre-session variable assignment, post-session on success variable assignment, and post-session on failure variable assignment cannot be used in a reusable session. Solution. 1) For Solution, enter CR with a Workaround if a direct Solution is not available. 2) For HOW TO, enter the procedure in steps.
Solution. The Workflow Administration Guide states that you cannot update mapplet variables in the pre-session variable assignment. However, in the the GUI window for pre-session variable assignment, if the mapplet variable name is given in the following format, the variable will be recognized as a mapplet variable and the assignment will work ...
Are we able to assign any values in the presession and post session variable assignment other than mapping variables and workflow\workletvaraibles To make it more clear,i have defined a mapping variable and workflow variable
In this video, you will learn about how to assign values ina. Presessionb. Post sessionc. How to run commands in pre and post sessiond. How to send email on ...
All parameter and variable types can be used in a pre- or post-session command tasks: Service variables; Service process variables; Workflow variables (user-defined workflow variables only. Built-in workflow variables cannot be used). Worklet variables; Session parameters; Mapping parameters; Mapping variables
In Session1 --> under post session assignment assign the mapping variable value to worlkflow variable 1. In session 2 --> under pre session assignment .Assign the workflow variable value 1 to mapping variable 2. In this way the mapping 1 value is assigned to mapping variable 2 and use that value in the session2.
In the pre- or post-worklet variable assignment area, click the add button to add a variable assignment statement. Click the open button in the User-Defined Worklet Variables and Parent Workflow/Worklet Variables fields to select the variables whose values you wish to read or assign. For pre-worklet variable assignment, you may enter parameter ...
Using Parameters and Variables. You can use parameters and variables in pre- and post-session commands. Use any parameter or variable type that you can define in the parameter file. You can enter a parameter or variable within the command, or you can use a parameter or variable as the command. For example, you can include service process ...
I'm not 100% sure if the variable assignment is exectured before the post-session command. If the command is executed first, you could execute your command tasks in an external command task after your session. Pre-Session variable assignment is used if you pass a value from a workflow variable down to a mapping variable.
If you are registered with any of the following Informatica applications, you can log in using the same credentials: If you are an Informatica Partner, do not create an account here. Please contact your Partner Portal Admin, your Informatica Partner Sales Manager, or contact Partner Support. Sign In.
Informatica Support Guide and Statements, Quick Start Guides, and Cloud Product Description Schedule. Product Availability Matrix. ... variable, a value assigned in the pre-session variable assignment, a value saved in the repository from the previous run of the session, a user-defined .
Customer-organized groups that meet online and in-person. Join today to network, share ideas, and get tips on how to get the most out of Informatica
To pass a mapping variable or parameter value from one session to another in a workflow, do the following: Create two consecutive sessions (session1 and session2) in a Workflow. Create Workflow variable (s) in the Workflow. In Session1, go to Edit >Components > Post-Session On Success Variable Assignment, assign values from mapping variables ...
Informatica Support Guide and Statements, Quick Start Guides, and Cloud Product Description Schedule Product Lifecycle. End of Life statements of Informatica products ... Pre-session variable assignment. Assign values to mapping parameters, mapping variables, and session parameters before a session runs. Read-only for reusable sessions.
You can assign parameter and variable values in a session to pass values from one session to any subsequent session in the same workflow or worklet. For example, a workflow contains two sessions s_NewCustomers and s_MergeCustomers. Session s_MergeCustomers needs to use the value of a mapping variable updated in s_NewCustomers.
Informatica Support Guide and Statements, Quick Start Guides, and Cloud Product Description Schedule. ... To override the saved value, define the start value of the variable in a parameter file or assign a value in the pre-session variable assignment in the session properties. Or, When you do not want to use any of the variable values saved for ...
The Integration Service runs pre-session SQL commands before it reads the source. It runs post-session SQL commands after it writes to the target. You can use parameters and variables in SQL executed against the source and target. Use any parameter or variable type that you can define in the parameter file. You can enter a parameter or variable ...
Customer-organized groups that meet online and in-person. Join today to network, share ideas, and get tips on how to get the most out of Informatica
Pre-worklet variable assignment. You can update user-defined worklet variables before a worklet runs. You can assign these variables the values of parent workflow or worklet variables or the values of mapping variables from other tasks in the workflow or parent worklet. You can update worklet variables with values from the parent of the worklet.