I am not too familiar with how to audit sessions running my DB. Should I be concerned about OLD sessions? Or sessions that I do not know what they are doing? Any advice is appreciated. The following is an example. It's been running thru sqlplus on the server side since 11/03/2000 (sorry for how it looks on this forum):

SADDR SID SERIAL# AUDSID PADDR USER# USERNAME COMMAND OWNERID TADDR LOCKWAIT STATUS SERVER SCHEMA# SCHEMANAME OSUSER PROCESS MACHINE TERMINAL PROGRAM TYPE SQL_ADDR SQL_HASH_VALUE PREV_SQL PREV_HASH_VALUE MODULE MODULE_HASH ACTION ACTION_HASH CLIENT_INFO FIXED_TABLE_SEQUENCE ROW_WAIT_OBJ# ROW_WAIT_FILE# ROW_WAIT_BLOCK# ROW_WAIT_ROW# LOGON_TIM LAST_CALL_ET PDM FAILOVER_TYPE FAILOVER_M FAI
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82599C78 19 653 167668 8258284C 5 SYSTEM 0 2.147E+09 INACTIVE DEDICATED 5 SYSTEM oracle 10584 shamrock pts/15 sqlplus@shamrock (TNS V1-V3) USER 8348B404 3.760E+09 8348B404 3.760E+09 SQL*Plus 3.670E+09 4.030E+09 32295 -1 0 0 0 03-NOV-00 3704674 NO NONE NONE NO