Is this information available in one of the DBA_HIST views? Shared pool follow up February 03, 2004 - 10:31 am UTC Reviewer: kom from USA you said : >>> 2) make your shared pool small to allow for aging to take I observed v$sql while the program was going on. Note the two bold pieces.
You would never consider doing that in your application you should never consider doing that to your database either. To describe: cursor_sharing is set to exact, query itself does not use function new_time (procedure does) and system crashes only when in query where clause we use one particular column (in Do not run them frequently (I have seen people scheduling them as part of Oracle Hourly jobs. This is a page which has all diagnostic tools link at one place for helping DBA's. http://www.dba-oracle.com/sf_ora_04031_unable_to_allocate_string_bytes_of_shared_memory.htm
Reply sai says: January 6, 2015 at 7:44 am shared pool (4): 738197504 704(MB) shared pool (4): free memory 335014984 319.5(MB) stating the figures correctly, to avoid confusion. :) Reply Leave SELECT substr(sql_text,1,90) "SQL",count(*) "SQL Copies", sum(executions) "TotExecs", sum(sharable_mem) "TotMemory" FROM v$sqlarea WHERE executions < 5 GROUP BY substr(sql_text,1,90) HAVING count(*) > 30 ORDER BY 2; I personally try to use script You can not post a blank message. There are few different ways for detecting how many subpools you have in use.
I started up this database with Automatic SGA memory management with 1.5GB of total SGA. ORACLE instance shut down. 6 SQL> startup ORACLE instance started. and what is difference between ORA-04031 and ORA-04030 ? Ora 04031 Unable To Allocate 4096 Bytes Of Shared Memory Java Pool Thx, KU Followup August 27, 2003 - 5:49 pm UTC smaller then 4k -- not just 4k, smaller then 4k Is 4k the minimum allocation in shared pool?
X$KSMSP has been improved lately (188.8.131.52+ I think) to use a kghdmp_new() routine that supposedly holds the shared pool latches for less time at a time, but I wouldn't still dare Ora-04031 Solution This case happens mainly for two reasons: 1) Shared pool free memory fragmentation There is no big enough free chunk available even after flushing out unpinned chunks from LRU list. Of course, I won't know if this has helped since I had to restart the database to change the setting :) I'm running Oracle XE 10.2.0.1.0 on a Oracle Enterprise Linux TIA.
Followup August 22, 2003 - 8:58 am UTC lets see, running a database on a machine with just about enough memory to run the operating system. Ora-04031 Oracle 12c PL/SQL procedure successfully completed. Thank you! command - > alter system set events ‘4031 trace name heapdump level 2’; init.ora - >events=’4031 trace name heapdump, level 2’ SQL>oradebug setmypid SQL>oradebug dump heapdump 2 SQL>oradebug tracefile_name Staring from
Also the solution for ora-04031 was excellent. check here Thanks. Ora-04031 Shared Pool 11g Oracle's advice was to reduce the pools to 3. Ora-04031 Oracle 11g The way the Oracle shared pool (a very important shared memory data structure) operates is predicated on developers using bind variables.
Use ADRCI or Support Workbench to package the incident. Note that this article doesn't aim to explain all the basics of ORA-4031 troubleshooting, I'll talk about the subpool utilization imbalance problem only. In this case check the request failure size ORA-4031: unable to allocate 16400 bytes of shared memory We see that failure size is 16K. Single Laptop Machine of 16GB RAM. Ora-04031 Unable To Allocate 4160 Bytes Of Shared Memory
Upload new files and re-run a troubleshooting report d. Could this be contributing to the problem? Shared pool allocation August 27, 2003 - 9:50 am UTC Reviewer: Krish Ullur from Nashville, TN I read (somewhere) that shared pool memory is allocated in chunks of contiguous 4K bytes. SQL> SELECT NAME, SUM(BYTES) FROM V$SGASTAT WHERE POOL='LARGE POOL' GROUP BY ROLLUP (NAME); SELECT NAME, SUM(BYTES) FROM V$SGASTAT WHERE POOL='LARGE POOL' GROUP BY ROLLUP (NAME) * ERROR at line 1: ORA-00604:
In 9.2 days it was actually quite common to set this back to 1 IF you had ORA-4031 errors AND the reason was diagnosed to be free space imbalance between subpools. Ora-04031: Unable To Allocate 65560 Bytes Of Shared Memory For the full article regarding ORA-04031 and large pool sizing, check out this link. if I check the free memory of shared pool (use sgastatx "free memory"), it show that node1 have much more free memory than node2, even the node 2 is idle.
Then why are we getting this ORA-04031 error? June 20, 2002 - 9:19 am UTC Reviewer: DBA from UK We have been hitting this error on one of our systems, our software developers have suggested everything under the sun The link to the Oracle White Paper might have changed. Alter System Flush Shared Pool Query V$SGA_DYNAMIC_COMPONENTS to see various pool sizes… Reply Mimins says: April 26, 2010 at 9:48 pm Hi Tanel, Not using SGA_TARGET, I set shared pool size 4G for each node and
But most common source of these errors is caused by enormous amount of hard parsing causing library cache growth. In dynamic sql, I have to follow up the open for statement such as: open l_cursor for 'select . . . You can also use Sharable_mem column in V$SQLAREA to find these queries. select server, count(*) from v$session group by server; Sort Area size July 11, 2003 - 12:59 pm UTC Reviewer: George Frederick from NYC I have been an Oracle DBA for many
Does the query have to have in where clause column on which this table is partitioned in order for this to happen or can be any column from this partitioned table? we could get close to 100% if we like. bummer that my CPU was pegged to do it, but my cache hit - perfection! Dedicated server. Why does Fleur say "zey, ze" instead of "they, the" in Harry Potter?
At this point we just decided to no use automatic memory management, set all the parameters manually and restarted all instances. If Yes, then are you using LARGE_POOL_SIZE? On the other hand, you can also utilize the dbms_shared_pool package to pin large memory packages, or increase the availability of shared memory completely. When the ORA-4031's persisted, the advice was then to set the pools = 1.
Followup May 30, 2003 - 7:25 am UTC because an execute immediate is open execute close <<<==== on your production system, people are actually still using the things see. The "0 - unused" is the not-yet-used-for-any-subheap part of the memory. SQL> @pd kghdsidx NAME VALUE DESCRIPTION --------------------------------------------- ------------------------------ ------------------ _kghdsidx_count 7 max kghdsidx count The script above queries few X$ tables to show the value of this hidden parameter. Let's understand what does this error statement means.
By issuing a summation select against the V$SGASTAT view a DBA can quickly determine the size of the large pool area currently being used. If you haven't read metalink note 396940.1 - "Troubleshooting and Diagnosing ORA-4031 Error" yet, I recommend to do this first and then read my comments here. So question remains as why ORACLE is not allowing flush shared pool when it is out of memory ? If ORA-04031 is thrown, consider using the following select: select name, SUM(bytes) from V$SGASTAT where pool='LARGE POOL' group by ROLLUP(name); Though the number of bytes may
look at the logic, creating/dropping 2000 tables just isn't "a very good idea".