Error Ora-04031 Unable To Allocate 3896 Bytes Of Shared Memory
Contents |
SQL TuningSecurityOracle UNIXOracle LinuxMonitoringRemote supportRemote plansRemote servicesApplication Server ApplicationsOracle FormsOracle PortalApp UpgradesSQL ServerOracle ConceptsSoftware SupportRemote Support Development Implementation Consulting StaffConsulting PricesHelp Wanted! Oracle PostersOracle Books Oracle Scripts Ion Excel-DB Don Burleson Blog
ora 04031 unable to allocate 4096 bytes of shared memory ORA-04031 solution Oracle Error Tips by ora 04031 unable to allocate 32 bytes of shared memory Burleson Consulting Updated February 24, 2016 Oracle docs note this about ORA-04031: ORA-04031: unable to allocate string bytes of shared ora 04031 unable to allocate 32 bytes of shared memory shared pool unknown object memory Cause: More shared memory is needed than was allocated in the shared pool. Action: If the shared pool is out of memory, either use the dbms_shared_pool package to pin large packages, reduce yourOra-04031 Solution
use of shared memory, or increase the amount of available shared memory by increasing the value of the INIT.ORA parameters "shared_pool_reserved_size" and "shared_pool_size". If the large pool is out of memory, increase the INIT.ORA parameter "large_pool_size". There are many valuable resources regarding shared pool sizing, and ORA-04031 is very commonly encountered in situations involving the sizing of large pools. Below is an excerpt from an the article, Oracle Concepts ora-04031 unable to allocate 4160 bytes of shared memory - Shared Pool and Multi-Threaded Server (MTS) in which ORA-04031 is addressed and offered a resolution. If ORA-04031 is thrown, consider using the following select: select name, SUM(bytes) from V$SGASTAT where pool='LARGE POOL' group by ROLLUP(name); Though the number of bytes may vary, ORA-04031 is commonly thrown in operations with configured large pools. The exampled select above offers a summary of the number of bytes which will reveal the current pool size and you proximity to the maximum pool size which is specified within the LARGE_POOL_SIZE parameter. You will find that when the LARGE_POOL is increased up to 100%, ORA-04031 will typically be eliminated. To help you to understand more clearly the impact that large pool sizing can have in resolving ORA-04031, you may be interested in the statement below: Sizing the large pool can be complex. The large pool, if configured must be at least 600 kilobytes in size. Usually for most MTS applications 600k is enough. However, if PQO is also used in your Oracle8 environment then the size of the large pool will increase dramatically. The V$SGASTAT dynamic performance view has a new column in Oracle8, POOL. The POOL column in the V$SGASTAT view is u
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn alter system flush shared pool more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users
Ora-04031: Unable To Allocate 65560 Bytes Of Shared Memory
Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping
Ora-04031 Oracle 11g
each other. Join them; it only takes a minute: Sign up Resolving ORA-4031 “unable to allocate x bytes of shared memory” up vote 16 down vote favorite 2 I need some pointers on how to diagnose and fix http://www.dba-oracle.com/sf_ora_04031_unable_to_allocate_string_bytes_of_shared_memory.htm this problem. I don't know if this is a simple server setup problem or an application design problem (or both). Once or twice every few months this Oracle XE database reports ORA-4031 errors. It doesn't point to any particular part of the sga consistently. A recent example is: ORA-04031: unable to allocate 8208 bytes of shared memory ("large pool","unknown object","sort subheap","sort key") When this error comes up, if the user keeps refreshing, clicking on different links, http://stackoverflow.com/questions/994182/resolving-ora-4031-unable-to-allocate-x-bytes-of-shared-memory they'll generally get more of these kinds of errors at different times, then soon they'll get "404 not found" page errors. Restarting the database usually resolves the problem for a while, then a month or so later it comes up again, but rarely at the same location in the program (i.e. it doesn't seem linked to any particular portion of code) (the above example error was raised from an Apex page which was sorting 5000+ rows from a table). I've tried increasing sga_max_size from 140M to 256M and hope this will help things. 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 5 box with 512MB of RAM. The server only runs the database, Oracle Apex (v3.1.2) and Apache web server. I installed it with pretty much all default parameters and it's been running quite well for a year or so. Most issues I've been able to resolve myself by tuning the application code; it's not intensively used and isn't a business critical system. These are some current settings I think may be relevant: pga_aggregate_target 41,943,040 sga_max_size 268,435,456 sga_target 146,800,640 shared_pool_reserved_size 5,452,595 shared_pool_size 104,857,600 If it's any help here's the current SGA sizes: Total System Global Area 268435456 bytes Fixed Size 1258392 bytes Variable Size 251661
Tom Kyte – Last updated: January 14, 2013 - 11:36 am UTC Category: Database – Version: 8.1.5 Latest Followup You Asked Tom: My Development Environment: I have a NT https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::p11_question_id:528893984337 development box with 256MB on it. There are two oracle databases on it. At least 2 identical schema owners on each of them. Each scema has on an average about 10 pl/sql packages of about 1000 lines each. I have separated two databases as D (Development) and Q (For our own internal testing). Also there is a JRUN server, and unable to a Netscape Enterprise Server running on the same box. My SGA: Total System Global Area 24899532 bytes Fixed Size 65484 bytes Variable Size 7983104 bytes Database Buffers 16777216 bytes Redo Buffers 73728 bytes Some of the pfile Parameters: db_block_size integer 8192 db_block_buffers integer 2048 shared_pool_size string 5000000 shared_pool_reserved_size string 250000 shared_pool_size string 5000000 Problems Encountered: Our developers are using servlet applications, unable to allocate and our testers are banging against the database pretty hard. I have to restart the server at least once or twice every day due to shared memory errors such as the one below. Our QC and Production environments will be dedicated Oracle servers running on Solaris boxes with much better resource allocations. Any help on how to eliminate/mitigate this problem will be greatly appreciated. Thanks, Khalid Sample Errors: *********************************************** Error: SQLException java.sql.SQLException: ORA-04031: unable to allocate 4096 bytes of shared memory ("shared pool","GF","PL/SQL MPCODE","BAMIMA: Bam Buffer") ORA-06508: PL/SQL: could not find program unit being called ORA-06512: at line 1 begin :1 := gfx.insrt_coach('Ron Jennings',5,'04172001','','','',''); end; Error: SQLException java.sql.SQLException: ORA-00604: error occurred at recursive SQL level 1 ORA-04031: unable to allocate 4216 bytes of shared memory ("shared pool","select con#,obj#,rcon#,enabl...","sga heap","library cache") INSERT INTO gfx_suggestion (suggestion, suggestion_id, timestamp, suggestion_type_fl, name, email, business_unit_key) select 'test suggestion. RJ 04/19/01', max(suggestion_id)+1, sysdate, 'T', 'Ron Jennings' , 'rj@rwd.com', '5' from gf_suggestion ******************************************************* and we said... #1 -- you are NOT USING BIND VARIABLES, for example I clearly see: INSERT INTO gfx_suggestion (suggestion, suggestion_id, timestamp, suggestion_type_fl, na