In oracle there is something called online redefenition.
I am new to sybase and I am searching for something similar in sybase.
the job of online redefenition is to re-orgnize the space of a table but online, it means it doesnt lock the table.
I read about re-org in sybase
Starting with SAP ASE 15.7 ESD#2, an online reorg option was added.
reorg rebuild <table_name> with online
It's documented in the New Features Guide for that version.
Be careful, as there is a known bug affecting ASE 15.7 SP 133 & SP 134 that can cause issues with this command.