Skip to main content

This content has been archived and is no longer being updated. Links may not function; however, this content may be relevant to outdated versions of the product.

Support Article

UDF missing invalid identifier while querying optimized property



“Invalid Identifier” messages are generated in the log file when Pega is trying to query on optimized properties.

Several stream reader User-Defined Functions (UDFs) are missing including PR_READ_FROM_STREAM.

Error Messages

SQLSyntaxErrorException: ORA-00904: "MYSCHEMA"."PR_READ_FROM_STREAM": invalid identifier

Steps to Reproduce

Run a report definition that needs to read a stream.

Root Cause

The root cause of this problem is missing required User-Defined Functions.


This issue is resolved by regenerating the necessary UDFs using the following steps:
  1. On your database, drop the existing version of the UDF functions: pr_read_decimal_from_stream, pr_read_from_stream, pr_read_int_from_stream (since you appear to be missing these, you can probably forgoe this, but it's best to confirm that they're all dropped)
  2. Update to point to the database in question
  3. Run the generateudf.bat or script in the scripts directory, with the following parameters:
    generateudf --action install --dbType [db2zos|mssql|postgres|oracledate|udb]

Published January 31, 2016 - Updated October 8, 2020

Was this useful?

0% found this useful

Have a question? Get answers now.

Visit the Collaboration Center to ask questions, engage in discussions, share ideas, and help others.

Did you find this content helpful?

Want to help us improve this content?

We'd prefer it if you saw us at our best.

Pega Community has detected you are using a browser which may prevent you from experiencing the site as intended. To improve your experience, please update your browser.

Close Deprecation Notice
Contact us