Use options obs=max. The actual value will vary depending on the version of SAS and your hardware.
xx options obs=100;
xx %put %sysfunc(getoption(obs));
100
xx options obs=max;
xx %put %sysfunc(getoption(obs));
9223372036854775807
2025 SAS Hackathon: There is still time!
Good news: We've extended SAS Hackathon registration until Sept. 12, so you still have time to be part of our biggest event yet – our five-year anniversary!