Unable to see Trace file

Question

well, recently i installed the oracle 9.2.0.6 in hpux IA64.. well i used this command to generate the trace file;
alter session set sql_trace=true;
select *****;
alter session set sql_trace=false;
i check in udump directory, there is no trace generated?
and parameter are timed_statistics=true and utl_file_dir=*
and whats problem?

Answer 1

As described in the installation guide [url=http://download-
west.oracle.com/docs/html/A96167_01/pre.htm#i1000708
]here
"For HP users, the OSDBA group must be granted the HP system privileges RTSCHED, RTPRIO and MLOCK.
For more information, refer to the Oracle9i Administrator's Reference Release 2 (9.2.0.1.0) for UNIX Systems."
Your problem can be fixed as described in MetaLink Note 283579.1
Assign MLOCK privilege to groups "dba" and "oper".
As root,
setprivgrp dba MLOCK
setprivgrp oper MLOCK
To retain the MLOCK privilege after rebooting, create the file /etc/privgroup with the two lines,
dba MLOCK
oper MLOCK