Disable Oracle Trace.

Question

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How To Disable OracleTrace
Since Oracle 7.3.2, the default behaviour has been to have OracleTrace enabled automatically. This feature is generally overlooked by DBAs; partly through ignorance but mostly because up until release 8i, OracleTrace wasn't really all that useful. That's all changed since 8i and 9i but the default behaviour has still been to have tracing enabled This causes a number of files to build up under $ORACLE_HOME/otrace/admin. If these files are not regularly cleared out, the first you'll hear about it is when the file system fills up or you notice that performance becomes mysteriously sluggish, especially when connecting. In fact I have seen database connect times rise up to about 5 minutes because of this.
If you are not interested in collecting this data, then simply turn it off. You can do this for individual users/clients or for all SQL*Net / Net8 / OracleNet connections as follows:
UNIX - bequeath or server-side connections
Set environment variable EPC_DISABLED=TRUE
NT or Windows2000 clients
In regedt32, go to
HKEY_LOCAL_MACHINE
-> SOFTWARE
-> ORACLE
Create a new registry value called EPC_DISABLED of type REG_SZ and set it to TRUE
For all OracleNet connections
Add ENVS="EPC_DISABLED=TRUE" to the server's $TNS_ADMIN/tnsnames.ora file. For example:
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(SID_NAME=GROB)
(ORACLE_HOME=/u01/app/oracle/product/8.1.7)
(ENVS="EPC_DISABLED=TRUE")
Next time the database is down, delete the .dat files from $ORACLE_HOME/otrace/admin: process.dat, collect.dat and regid.dat. If you need to create them again (you might want to turn OracleTrace back on) you can create them with the $ORACLE_HOME/bin/otrccref command.
Oracle9i improvements
Oracle9i has introduced a wealth of new capability for OracleTrace. It now has it's own command line interface (otrccol) and you can fine-tune the information you collect into event sets which are defined in product definition (.fdf) files. A whole new set of init.ora parameters have been introduced to tell Oracle where the .fdf files live and to restrict the size of the .dat files generated. The parameter ORACLE_TRACE_ENABLE is used to turn tracing on or off. The default is FALSE.
References
Oracle Note 45482.1
Oracle9i Database Performance Guide and Reference (9.0) Chapter 12

Answer 1

IF you have to give any advice than give it in a proper way I am feeling offended by what you said.Why are you offended? I asked nicely, said "please" and everything.
Please bear in mind that most of the people who post here (like 99.99%) do so for complicated reasons but one of the primary aims is to help others. That is especially true (if I may say so) for those of us who have been awarded ACE status.
So if you think you have been offended please stop and consider whether you really have been insulted. The chances are you are imagining a slight where none was intended. Believe you me, we are aware that this is a multi-cultural environment and that English is not everybody's first language. If we want to be insulting we tend to be very obvious about it.
Cheers, APC