现在有一个实时监视系统,将工业上硬件各种数据通过DCS采集至Oralce中,然后通过Web形式发布软件 Win2000 AD Server, Oralce 8.1.7
硬件 Hp 服务器, 1G ,XEON 2 X 2.8G常用的数据库操作是:
每五秒向数据库写入数据,其实有个多个表是包含600个字段,每个字段代表一个工业点实时数据客户端(多个)也是每五秒向数据库Select数据,每次Select都是重新连接数据库,完后再断开系统有一Job,用来检查历史表是否超过三个月的数据量,多则删除数据,每天一次曾用处理方法:
已经缓冲区增至很大,占用内存也调至很大症状:
数据库运行几天后便出现客户端无法正常显示数据,重启服务器即可解决请各位医生开处方
硬件 Hp 服务器, 1G ,XEON 2 X 2.8G常用的数据库操作是:
每五秒向数据库写入数据,其实有个多个表是包含600个字段,每个字段代表一个工业点实时数据客户端(多个)也是每五秒向数据库Select数据,每次Select都是重新连接数据库,完后再断开系统有一Job,用来检查历史表是否超过三个月的数据量,多则删除数据,每天一次曾用处理方法:
已经缓冲区增至很大,占用内存也调至很大症状:
数据库运行几天后便出现客户端无法正常显示数据,重启服务器即可解决请各位医生开处方
2.数据库的告警日志
3.检查应用程序,优化SQL
我用PLSQL和DBA Studio都无法连接数据，出现以下提示：
ORA-00604: error occurred at recursive SQL level2
ORA-04031: unable to allocate 4200 bytes of shared memory("shared pool","TRIGGGGR$","sgaheap","state objects")
ORA-00604: error occurred at recursive SQL level1
ORA-04031: unable to allocate 4300 bytes of shared memory("shared pool","unknown object","sgaheap","state objects")拷图可看:
http://www.zhouhuan.net/photo/error1.jpg
http://www.zhouhuan.net/photo/error2.jpg可位高手请指点一下
#
# Copyright (c) 1991, 2000 by Oracle Corporation
#
##############################################################################
# Example INIT.ORA file
#
# This file is provided by Oracle Corporation to help you customize
# your RDBMS installation for your site. Important system parameters
# are discussed, and example settings given.
#
# Some parameter settings are generic to any size installation.
# For parameters that require different values in different size
# installations, three scenarios have been provided: SMALL, MEDIUM
# and LARGE. Any parameter that needs to be tuned according to
# installation size will have three settings, each one commented
# according to installation size.
#
# Use the following table to approximate the SGA size needed for the
# three scenarious provided in this file:
#
# -------Installation/Database Size------
# SMALL MEDIUM LARGE
# Block 2K 4500K 6800K 17000K
# Size 4K 5500K 8800K 21000K
#
# To set up a database that multiple instances will be using, place
# all instance-specific parameters in one file, and then have all
# of these files point to a master file using the IFILE command.
# This way, when you change a public
# parameter, it will automatically change on all instances. This is
# necessary, since all instances must run with the same value for many
# parameters. For example, if you choose to use private rollback segments,
# these must be specified in different files, but since all gc_*
# parameters must be the same on all instances, they should be in one file.
#
# INSTRUCTIONS: Edit this file and the other INIT files it calls for
# your site, either by using the values provided here or by providing
# your own. Then place an IFILE= line into each instance-specific
# INIT file that points at this file.
#
# NOTE: Parameter values suggested in this file are based on conservative
# estimates for computer memory availability. You should adjust values upward
# for modern machines.
#
###############################################################################db_name = "realdata"instance_name = realdataservice_names = realdatadb_files = 1024 # INITIAL
# db_files = 80 # SMALL
# db_files = 400 # MEDIUM
# db_files = 1500 # LARGEcontrol_files = ("C:\oracle\oradata\realdata\control01.ctl", "C:\oracle\oradata\realdata\control02.ctl", "C:\oracle\oradata\realdata\control03.ctl")open_cursors = 300
max_enabled_roles = 30
db_file_multiblock_read_count = 8 # INITIAL
# db_file_multiblock_read_count = 8 # SMALL
# db_file_multiblock_read_count = 16 # MEDIUM
# db_file_multiblock_read_count = 32 # LARGEdb_block_buffers = 19200 # INITIAL
# db_block_buffers = 100 # SMALL
# db_block_buffers = 550 # MEDIUM
# db_block_buffers = 3200 # LARGEshared_pool_size = 104857600 # INITIAL
# shared_pool_size = 3500000 # SMALL
# shared_pool_size = 5000000 # MEDIUM
# shared_pool_size = 90000000 # LARGElarge_pool_size = 614400
java_pool_size = 20971520log_checkpoint_interval = 10000
log_checkpoint_timeout = 1800processes = 150 # INITIAL
# processes = 50 # SMALL
# processes = 100 # MEDIUM
# processes = 200 # LARGEparallel_max_servers = 5 # SMALL
# parallel_max_servers = 4 x (number of CPUs) # MEDIUM
# parallel_max_servers = 4 x (number of CPUs) # LARGElog_buffer = 32768 # INITIAL
# log_buffer = 32768 # SMALL
# log_buffer = 32768 # MEDIUM
# log_buffer = 163840 # LARGE#audit_trail = true # if you want auditing
#timed_statistics = true # if you want timed statistics
max_dump_file_size = 10240 # limit trace file size to 5M each# Uncommenting the line below will cause automatic archiving if archiving has
# been enabled using ALTER DATABASE ARCHIVELOG.
# log_archive_start = true
# log_archive_dest_1 = "location=C:\oracle\oradata\realdata\archive"
# log_archive_format = %%ORACLE_SID%%T%TS%S.ARC# If using private rollback segments, place lines of the following
# form in each of your instance-specific init.ora files:
#rollback_segments = ( RBS0, RBS1, RBS2, RBS3, RBS4, RBS5, RBS6 )# If using public rollback segments, define how many
# rollback segments each instance will pick up, using the formula
# # of rollback segments = transactions / transactions_per_rollback_segment
# In this example each instance will grab 40/5 = 8
# transactions = 40
# transactions_per_rollback_segment = 5# Global Naming -- enforce that a dblink has same name as the db it connects to
global_names = true# Edit and uncomment the following line to provide the suffix that will be
# appended to the db_name parameter (separated with a dot) and stored as the
# global database name when a database is created. If your site uses
# Internet Domain names for e-mail, then the part of your e-mail address after
# the '@' is a good candidate for this parameter value.
# db_domain = us.acme.com # global database name is db_name.db_domain# Uncomment the following line if you wish to enable the Oracle Trace product
# to trace server activity. This enables scheduling of server collections
# from the Oracle Enterprise Manager Console.
# Also, if the oracle_trace_collection_name parameter is non-null,
# every session will write to the named collection, as well as enabling you
# to schedule future collections from the console.
# oracle_trace_enable = trueoracle_trace_collection_name = ""
# define directories to store trace and alert files
background_dump_dest = C:\oracle\admin\realdata\bdump
#Uncomment this parameter to enable resource management for your database.
#The SYSTEM_PLAN is provided by default with the database.
#Change the plan name if you have created your own resource plan.# resource_manager_plan = system_plan
user_dump_dest = C:\oracle\admin\realdata\udumpdb_block_size = 8192remote_login_passwordfile = exclusiveos_authent_prefix = ""# The following parameters are needed for the Advanced Replication Option
job_queue_processes = 4
job_queue_interval = 10
open_links = 4distributed_transactions = 500
mts_dispatchers = "(PROTOCOL=TCP)(PRE=oracle.aurora.server.SGiopServer)"
# Uncomment the following line when your listener is configured for SSL
# (listener.ora and sqlnet.ora)
# mts_dispatchers = "(PROTOCOL=TCPS)(PRE=oracle.aurora.server.SGiopServer)"compatible = 8.1.0
sort_area_size = 65536
sort_area_retained_size = 65536
另外，加大sql缓冲区的大小。