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Re: dbms_stats on BIG Table giving error out of process memory when trying to allocate 1049100 bytes

Paul Drake

2005-08-19

Replies:

On 8/19/05, VIVEK_SHARMA <VIVEK_SHARMA@infosys.com> wrote:

 

SQL> alter session set sort_area_size=500000000

SQL> exec dbms_stats.gather_table_stats('TBAADM','HIST_TRAN_DTL_TABLE',degree=>4,estimate_percent=>30);

 

 ERROR at line 1:

ORA-12801: error signaled in parallel query server P000

ORA-04030: out of process memory when trying to allocate 1049100 bytes

(callheap,kllcqas:kllsltba)

ORA-06512: at "SYS.DBMS_STATS", line 9375

ORA-06512: at "SYS.DBMS_STATS", line 9389

ORA-06512: at line 1


<borrowed>
Patient: "Doctor, It hurts when I do this (makes motion)".
Doctor: "Don't do that."

parallel query slaves are each going to allocate private areas in memory.
this system configuration does not have enough memory for what you are attempting to do.

Q1: workarea_size_policy [AUTO | MANUAL]  for the instance, session?
If the workarea_size_policy=AUTO, it doesn't matter what you set the sort_area_size to, as its not being used.

Q2: what are the existing settings for the following parameters:
pga_aggregate_target
workarea_size_policy
shared_pool_size
large_pool_size
java_pool_size
db_cache_size
sga_max_size

Q3: if in fact, at least for the session, the workarea_size_policy=MANUAL, if 4 parallel query slaves each threw 512 MB of memory, you'd be well over the process limit. Have you attempted this with smaller values for the sort_area_size, say 64 MB and had it complete?

Q4: is this a 32 bit of 64 bit version of solaris, oracle?
(not that you'd want to run 64 bit with only 2 GB of physical memory - I don't see the point there)

Q5: did you examine v$sgastat at the time to see how the memory in the sga was allocated?

that's a start.

Paul

Existing Pointers :-

Sometimes decreasing the size of your sort_area_size will remedy this problem.

Another thought is that if you are using parallel query on this view, perhaps the amount of memory required for the number of slaves handling the query is growing too big.

 

Qs ANY OTHER POINTERS PLEASE?

 

Server info:-

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

Server 2 GB memory

2 CPUs

Solaris 9

Oracle 9i

 

THANKS INDEED

 

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