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Home -> Community -> Mailing Lists -> Oracle-L -> RE: 4031 - errors
Well, according to oracle I might be running into a bug one of 4 they gave
me.
One relates to a function index - 2805335 or db link bug 2561115.
but how can I tell if there is a memory leak associated with a leak (I am suspecting the HS link we have to sql server since we continue to get core dumps) either of these.
I did provide ORacle support with a hanganalyze but I haven't had time to look into these.
I have also seen some of our .net process take alot of resources from shared_pool and x$bh and not release them right away. They seem to release resources in chunks. for example by being used count from x$bh goes from 4090 to over 3000 when one process is going them after it completes it takes almost 40 minutes before the buffers go back to 500 or so. We are using dispose in some code as we did have a problem with cursors in some of the code. I test this code and it grabs alot of resource and again takes a awhile to release them. So I am wondering about this as well.
I will fix the compatability parameter in the init.ora I didn't notice that.
I just wasn't sure why the cursor spaced for time was set in the first place. Was this way when I got here and I assumed it was set for a reason but who knows.
Up to my A** in alligators this week... duhvelopers thinking they are dbas and playing with tables then whining... why doesn't this stuff work?
Man if I change their code they would scream....
Thanks,
kathy
-----Original Message-----
From: Duret, Kathy [mailto:kduret_at_starkinvestments.com]
Sent: Wednesday, May 26, 2004 2:53 PM
To: oracle-l_at_freelists.org
Subject: 4031 - errors
Had a strange problems on Friday afternoon. We are on 8.1.7.4 Solaris
Had a ton of Bam - ora_04031 errors.
Tried to flush the shared pool and it would release some space but a large chuck was not being released and this was strange since we have only acouple of objects pinned.
When I tried to pin an object that was failing right after I would flush the shared_pool I couldn't get space.
Nothing new was put in that week as far as I know.
Put in a tar with Oracle and they suggested to bounce the database - which I did later, increased the shared_pool and session_cached_cursors We have pinned some more objects that are being loaded alot.
I looked at the sql area and nothing looked horrible, all the same normal stuff. In fact there was really no load on the database or machine, no swapping or paging.
It was very strange. It looked like "something" had memory and wasn't releasing it.
Oracle Supportless was of no help.... except to say bounce the database and told me to set a parameter that isn't available until 9i.
I tried running quite a few of Steve Adams scripts but really didn't enlighten me as to what was causing the problem.
I have since set the event in the init.ora for 4031. I know we don't use enough bind variable since the "java" structure with Jbosse doesn't work with bind variable ( this is what I am told anyway)
the cursor_spaced_for_time is set to true which I believe was done for the
Jbosse app we are running since they pool connections and can't/dont use
bind variables. I am wondering
if this should be set to false.
My questions are:
Any suggestions, welcome.
init.ora - I took out the nls and archive,etc info
_spin_count 5000
processes 700 sessions 775 timed_statistics TRUE timed_os_statistics 0 resource_limit FALSE license_max_sessions 0 license_sessions_warning 0 cpu_count 4instance_groups
shared_pool_size 500000000 shared_pool_reserved_size 25000000 large_pool_size 614400 java_pool_size 20971520 java_soft_sessionspace_limit 0 java_max_sessionspace_size 0 pre_page_sga FALSE shared_memory_address 0 hi_shared_memory_address 0 use_indirect_data_buffers FALSE lock_sga FALSE lock_name_space enqueue_resources 1000 disk_asynch_io TRUE tape_asynch_io TRUE dbwr_io_slaves 0 backup_tape_io_slaves FALSE ops_interconnects db_file_direct_io_count 64resource_manager_plan
lm_ress 6000 lm_locks 12000active_instance_count
log_file_name_convert db_block_buffers 25000 db_block_checksum FALSE db_block_size 8192 db_block_lru_latches 8 db_writer_processes 2 db_block_max_dirty_target 25000buffer_pool_keep
max_commit_propagation_delay 700 compatible 8.1.7 log_archive_trace 0 log_buffer 2097152 log_checkpoint_interval 999999999 log_checkpoint_timeout 900 db_files 200 db_file_multiblock_read_count 8 read_only_open_delayed FALSE parallel_server FALSE parallel_server_instances 1 gc_releasable_locks 0 gc_rollback_locks 0-1024=32!8REACH gc_files_to_locks gc_defer_time 10 thread 0 fast_start_io_target 25000 log_checkpoints_to_alert FALSE recovery_parallelism 0 control_file_record_keep_time 7 dml_locks 3408 row_locking always serializable FALSE replication_dependency_tracking TRUE instance_number 0 transactions 852 transactions_per_rollback_segment 5 max_rollback_segments 170 transaction_auditing FALSE fast_start_parallel_rollback LOW db_block_checking FALSEthanks,
_row_cache_instance_locks 1000
_row_cache_buffer_size 2000
_row_cache_cursors 100
os_roles FALSE rdbms_server_dn max_enabled_roles 30 remote_os_authent FALSE remote_os_roles FALSE O7_DICTIONARY_ACCESSIBILITY TRUE remote_login_passwordfile EXCLUSIVE dblink_encrypt_login FALSE license_max_users 0 db_domain global_names FALSE distributed_transactions 213 commit_point_strength 1 mts_dispatchers mts_servers 0 mts_max_servers 20 mts_max_dispatchers 5 mts_sessions 0 mts_circuits 0 mts_listener_address mts_multiple_listeners FALSE open_links 100 open_links_per_instance 4 optimizer_features_enable 8.1.7 fixed_date audit_trail DB sort_area_size 2097152 sort_area_retained_size 524288 sort_multiblock_read_count 8 open_cursors 1500 ifile sql_trace FALSE os_authent_prefix optimizer_mode CHOOSE sql92_security FALSE blank_trimming FALSE always_anti_join NESTED_LOOPS partition_view_enabled FALSE star_transformation_enabled FALSE parallel_broadcast_enabled FALSE parallel_adaptive_multi_user FALSE parallel_threads_per_cpu 2 parallel_automatic_tuning FALSE always_semi_join STANDARD optimizer_max_permutations 80000 optimizer_index_cost_adj 100 optimizer_index_caching 0 query_rewrite_enabled FALSE query_rewrite_integrity enforced sql_version NATIVE serial_reuse DISABLE cursor_space_for_time TRUE session_cached_cursors 400 text_enable FALSE remote_dependencies_mode TIMESTAMP utl_file_dir plsql_v2_compatibility FALSE job_queue_processes 1 job_queue_interval 60 optimizer_percent_parallel 0 parallel_min_percent 0 create_bitmap_area_size 8388608 bitmap_merge_area_size 1048576 cursor_sharing EXACT parallel_min_servers 0 parallel_max_servers 5 parallel_instance_group parallel_execution_message_size 2148 hash_join_enabled TRUE hash_area_size 2097152 hash_multiblock_io_count 8 oracle_trace_enable FALSE oracle_trace_facility_path ?/otrace/admin/fdf oracle_trace_collection_path ?/otrace/admin/cdf oracle_trace_facility_name oracled oracle_trace_collection_name oracle_trace_collection_size 5242880 object_cache_optimal_size 1048576 object_cache_max_size_percent 10 session_max_open_files 10 aq_tm_processes 0 hs_autoregister TRUE
Kathy
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