all, i have 10.2.0.1 on HP-UX, and DSS type application sga = 10g pga = 12g real memory = 32g i found on AWR: session pga memory 1,847,738,288 64,196.78 485,991.13 session pga memory max 13,043,813,104 453,186.90 3,430,776.72 session uga memory ############### 70,139,299.76 530,978,001.94 session uga memory max 10,566,090,216 367,102.29 2,779,087.38 it seems that session uga memory is strange.... why so huge... also sysadmin reported that OS memory was exhausted (only give some MB free)... thanks for the sharing.... -- regards ujang -- //www.freelists.org/webpage/oracle-l