Question Re: range error invalid string length at json.stringify in Technology Q&A

range error invalid string length at json.stringify

former_member665201 — Sat, 18 Jul 2020 15:59:56 GMT

Hi ,

I am facing issue at this line in my xsjs file

$.response.setBody(JSON.stringify(result));

ERROR MSG:range error invalid string length at json.stringify

Re: range error invalid string length at json.stringify

pfefferf — Sat, 18 Jul 2020 18:09:39 GMT

Can you show what value your result variable contains.

Re: range error invalid string length at json.stringify

former_member665201 — Sat, 18 Jul 2020 20:23:07 GMT

Its a array of object . . Multiple rows will be return from the data base query. . I am juz trying to pass it to front end . .

Re: range error invalid string length at json.stringify

pfefferf — Sun, 19 Jul 2020 05:19:38 GMT

Again, please show the content/structure of the result variable.

Re: range error invalid string length at json.stringify

former_member667818 — Fri, 13 Nov 2020 06:23:39 GMT

Hi Florian,

Same error for me also.
Attached screenshot.

Thanks & Regards,
Yaswanth

invalid-string-length.png

Re: range error invalid string length at json.stringify

former_member667818 — Fri, 13 Nov 2020 06:46:33 GMT

This happens only when we have huge data in the array.

Re: range error invalid string length at json.stringify

pfefferf — Fri, 13 Nov 2020 07:41:15 GMT

Seems that your node process runs out of memory during serialization of the "huge array" data. You can try to do the serialization in chunks or increase the memory for the node process.

Re: range error invalid string length at json.stringify

former_member667818 — Tue, 17 Nov 2020 04:41:56 GMT

How can it could be done ?
can you please elaborate a little bit
Any reference code will be helpful

Re: range error invalid string length at json.stringify

pfefferf — Tue, 17 Nov 2020 05:41:09 GMT

As mentioned in the comments above, the error ususally appears because runnining into a memory issue.

You can try

to process the serialization of your large array in chunks (e.g. if you have 1000 entries in your array, to a stepwise serialization per 100 entries for instance and concatenate the result).
increase the memory of your node process aka application (assuming you are using an XSA node module). You can do that via the deployment descriptor or manually (for test reasons) via the SAP HANA XSA Cockpit or the XS CLI (check the scaling options for memory here)