How do I know which process is causing high on DB memory use?

Hi DBAs,

I have an alert message Onesight indicating below:

Brief Description: Onesight alert: ZEUS DB Monitor (zeus04)

Description:

Solaris 5.8: vmstat (free) - free memory memory for zeus04 2065112 08:06:02 IST 2 min

Free memory below 4 GB: stood at 3 965 488, threshold is 4194304.0 - 12:36:02 AM IST

After issuance of OS level commands below I Gets the following interpretation:

prstat

This command returns me the process ID key (3578) that uses more CPU. then,

prstat - p Lm - 3578

This command gave me the following output:

USER NAME PID USR SYS TRP TFL DFL LCK SLP LAT VCX ICX SCL GIS PROCESS/LWPID

3578 oracle 0.7 2.3 1.6 0.0 0.0 90 4.4 1.5 K 483 235 1 0 java/838694

3578 oracle 0.3 0.0 0.0 0.2 0.0 95 1.5 0.1 52 8 41 0 java/839336

I thought that some Java process to implement asked the support of Apps team and says:

We believe that this process is related to the Oracle OEM Java process agent

Now how can I dig the question and resolve as free memory is less than 2 GB of almost every day.

DB environment details:

OS: Solaris 5.8 (Unix)

DB version: 10.2.0.5

Memory size: 64 GB

Kind regards

Ritu

Hi all

I gave the following query, which resulted in the sessions that are inactive for several months and had more memory, so after consulting with team Apps I killed them to release about 21 GB of 64 GB memory.

SELECT

s.SID, s.Serial #, s.UserName

s.status

substr(s.machine,1,10)

s.osuser, s.module

, to_char (logon_time, "mm/dd/yy hh24:mi:ss'") logon_time

-idle time

-days separately

, substr ("0" | trunc(last_call_et/86400),-2, 2) | ':' ||

-hours

substr ("0" | trunc (mod(last_call_et,86400)/3600), 2, -2). ':' ||

-minutes

substr ("0" | trunc (mod (mod(last_call_et,86400), 3600) / 60), 2, 2) | ':' ||

-seconds

substr ("0" | mod (mod (mod(last_call_et,86400), 3600), 60), 2, 2) idle

V $ session s, v$ process p

WHERE the s.username IS NOT NULL

-use outer join to view the sessions notched in

-session $ v that isn't an operating system process

AND p.addr (+) = s.paddr

and s.sid = 2398

ORDER BY

Idle desc;

Tags: Database

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