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resource busy and acquire with NOWAIT specified
error occurred at recursive SQL level string
ORACLE initialization or shutdown in progress
archiver error. Connect internal only, until freed
snapshot too old
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Credential retrieval failed
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invalid username/password; logon denied
unable to create INITIAL extent for segment
out of process memory when trying to allocate string bytes
shared memory realm does not exist
cannot insert NULL
TNS:unable to connect to destination
remote database not found ora-02019
exception encountered: core dump
inconsistent datatypes
no data found
TNS:operation timed out
PL/SQL: could not find program
existing state of packages has been discarded
maximum number of processes exceeded
error signaled in parallel query server
ORACLE instance terminated. Disconnection forced
TNS:packet writer failure
see ORA-12699
missing right parenthesis
name is already used by an existing object
cannot identify/lock data file
invalid file operation
quoted string not properly terminated

RE: relation shared pool elements phys mem

J Velikanovs

2004-08-06

Replies:
>The large pool is an optional memory structure used for Shared Server
(MTS),
>RMAN and PQ operations. It has to be big enough to hold everything it may
>need as it has no LRU list.
>
>You should try to discover what sessions are running out of memory and
why.
>(Metalink ID:1070975.6 may help).
Hi,

I have related question to the list,
.
Possible we have detected the session.
Question is: How to detect what is the reason of leaking memory?
.
I have some indirect ideas, may be some of you better to offer:
1. Check session for opened cursors:
select
    n.name,
    s.value
from
    v$sesstat s,
    v$statname n
where s.statistic#=n.statistic#
and n.name = 'opened cursors current'
and s.sid=<SID number>;

select HASH_VALUE, count(*) from V$OPEN_CURSOR
where sid=<SID number>
group by HASH_VALUE;
.
2. Check UGA/PGA sizes for particular session
select
    n.name,
    s.value
from
    v$sesstat s,
    v$statname n
where s.statistic#=n.statistic#
and n.name in (
'session pga memory',
'session pga memory max' ,
'session uga memory'    ,
'session uga memory max'
)
and s.sid = <SID number>
/

3. ????

But still not enough for telling that is the root cause of leaking.
Can any body add some hints to the list?


Thanks in advance,
Jurijs
+371 9268222 (+2 GMT)
============================================
Thank you for teaching me.
http://otn.oracle.com/ocm/jvelikanovs.html




On 06.08.2004 12:54:59 oracle-l-bounce wrote:

>Jeroen
>
>The large pool is an optional memory structure used for Shared Server
(MTS),
>RMAN and PQ operations. It has to be big enough to hold everything it may
>need as it has no LRU list.
>
>You should try to discover what sessions are running out of memory and
why.
>(Metalink ID:1070975.6 may help).
>
>Your SGA should definitely fit into your physical RAM, although Oracle
will
>still run (slowly) even if it doesn't.
>
>You could also post: Version, platform, Physical RAM, SGA size and
whether
>you use MTS.
>
>Ray


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