Hello Akriti,
bgRFC allows you to do everything that you could do with "Classic tRFC and qRFC".
But it does it faaar better.
It is far more scalable and has far better performance.
All these benefits are due to the way the bgRFC schedulers could be configured.
With "Classic tRFC and qRFC" - there is only one scheduler (one each for outbound and inbound) for the entire client. All the tRFC, qRFC entries for a given client are processed by only one scheduler and there is no way to increase the number of schedulers.
With bgRFC - you can have multiple schedulers in the system (in fact, multiple schedulers per application server is also possible).
The configurations could be controlled with SBGRFCCONF.
Remember though that simply increasing the number of schedulers does not increase the performance directly. I would suggest to keep the default settings there in SBGRFCCONF (by default, there will be one scheduler per application server in the system) and consider increasing the number only if this is not helping your performance.
I highly recommend bgRFC.
Thank you,
Best Regards,
JothiSubaramaniam P
SAP IMS CST