Release Bulletin for PowerBuilder 2017 R3
Known Issues in 2017 R3 1858

Considering that the computer memory is limited, ImportJSON and ExportJSON functions may have a limit on the amount of data it can handle. Our tests show that the maximum data volume is 110,000 rows x 16 columns when importing/exporting the standard-format JSON, or 160,000 rows x 16 columns when importing/exporting the simple-format JSON. When there are more columns, there are less rows the function can handle.