We have some ORACLE PGA problem and ORACLE document say we can serup lockmem(Max lock memory) to higher value. $ulimit -a time(cpu-seconds) unlimited file(blocks) unlimited coredump(blocks) 0 data(kbytes) unlimited stack(kbytes) 10240 lockedmem(kbytes) 3145728 memory(kbytes) unlimited nofiles(descriptors) 65536 processes 2047 Can anyone tell me how to set lockedmem to higher value on CENTOS 5.4? Thanks.