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ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conv



There is a property which can contain more than 4000 characters of data. Report Definition on this table throwing error.

Error Messages

An error occurred on executing the query for the report definition - There was a problem getting a list: code: 22835 SQLState: 99999 Message: ORA-22835: Buffer too small for CLOB to CHAR or BLOB to RAW conversion (actual: 13146, maximum: 4000

Steps to Reproduce

1) Create a Report Definition
2) Refer property (column : CLOB)
3) Run the report

Root Cause

A defect or configuration issue in the operating environment. There is a database limitation of 4000 bytes in a varchar2 column. For > 4000 a CLOB column should be used but support for a CLOB was not available until Pega 7.2.2.


Support for CLOB in Obj-Save and to retrieve the entire CLOB content in a report definition was backported to 7.1.9.

1. Apply HFix-33613 to be able to use Obj-Save for a text property that maps to a CLOB column

2. Apply HFix-35993 and create the following dynamic system setting to be able to retrieve a CLOB column greater than 4000 characters in length.

"reporting/retrieveFullClobContent" on "Pega-RULES" and set the value to "true"

Published August 26, 2017 - Updated October 8, 2020

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