My understanding of the connection to a dedicated server is the problem?

Version: 11.2.0.4 on Oracle Linux 6.5

Under Linux, Ps-U < username > lists all processes spawned by a user.

Shown below is a server busy DB, I see 74 OS process generated by the Oracle user.

Oracle - U [root] # ps | WC-l

74

This server has only 1 DB running in there. Although only 74 process OS are laid by oracle user, I see related 1295 application sessions outside of the DB server. Total number of session, including the sessions of the background process is 1329

In the JDBC URL (and tnsnames.ora to SQL * more) we use = DEDICATED SERVER in the connection string to use the dedicated server of the process characteristic. This means that the auditor must spawn 1 process of operating system dedicated for each session. Right? Then we see how is it that 74 process being begotten by the user oracle but 1329 sessions in v$ session. Are essentially in these sessions of 1329 begotten son by 74 processes?

[oracle] $ ps - ef | grep LOCAL = NO | WC-l

1287

-Connect to sqlplus

SQL > select count (*) in the session $ v where type = 'USER ';

COUNT (*)

----------

1295

SQL > select count (*) in the session of v$.

COUNT (*)

----------

1329

SQL > select separate server in the session of v$.

SERVER

---------

DEDICATED

-Also added output of process for the $ v is no help

SQL > select count (*) in process of v$.

COUNT (*)

----------

1529

SQL > select count (distinct spid) of process of v$.

COUNT (DISTINCTSPID)

-------------------

1622

SQL > select count (distinct pid) process of v$.

COUNT (DISTINCTPID)

------------------

1508

filters 'ps - U' by the real user ID (REAL).  It is distinguished by the effective user ID (EUID).

This is important if you use the separation of privileges - the real user ID would be inherited from the listener as a "grid", even if the effective UID is 'oracle' with the SETUID permission on the binary file $ORACLE_HOME/bin/oracle.

The process with "LOCAL = NO" are your dedicated server processes - they have simply not be counted by 'ps - U' for some reason any. You might want to try

$ ps - eo uid, euid, tweak, euser, command

to get a list of processes, including the real and effective UID for all your processes to see if it is the case.

Tags: Database

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    Hello

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    TABLE_NAME, NUM_ROWS LAST_ANALYZED

    ---------- ---------- ---------------------

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    VR,

    Sudhakar

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