浏览器出现You have reached the maximum number of permitted Internet sessions....解决方案

本文介绍了解决已达到最大数量的允许因特网会议错误的方法,包括清除cookies和临时文件、取消自动登录及使用杀毒软件进行全盘扫描等步骤。

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其中文意思为:您已达到最大数量的允许因特网会议

解决方案:

1、试着把cookies和Internet临时文件清楚;再把网络账号的自动登录取消

2、可能是中毒了,最好全盘扫描下,推荐:金山毒霸、卡巴斯基

3、可能是一个网内的用户在使用BT下载才导致这样

# Other default tuning values # MySQL Server Instance Configuration File # ---------------------------------------------------------------------- # Generated by the MySQL Server Instance Configuration Wizard # # # Installation Instructions # ---------------------------------------------------------------------- # # On Linux you can copy this file to /etc/my.cnf to set global options, # mysql-data-dir/my.cnf to set server-specific options # (@localstatedir@ for this installation) or to # ~/.my.cnf to set user-specific options. # # On Windows, when MySQL has been installed using MySQL Installer you # should keep this file in the ProgramData directory of your server # (e.g. C:\ProgramData\MySQL\MySQL Server X.Y). To make sure the server # reads the config file, use the startup option "--defaults-file". # # To run the server from the command line, execute this in a # command line shell, e.g. # mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini" # # To install the server as a Windows service manually, execute this in a # command line shell, e.g. # mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini" # # And then execute this in a command line shell to start the server, e.g. # net start MySQLXY # # # Guidelines for editing this file # ---------------------------------------------------------------------- # # In this file, you can use all long options that the program supports. # If you want to know the options a program supports, start the program # with the "--help" option. # # More detailed information about the individual options can also be # found in the manual. # # For advice on how to change settings please see # https://dev.mysql.com/doc/refman/8.0/en/server-configuration-defaults.html # # # CLIENT SECTION # ---------------------------------------------------------------------- # # The following options will be read by MySQL client applications. # Note that only client applications shipped by MySQL are guaranteed # to read this section. If you want your own MySQL client program to # honor these values, you need to specify it as an option during the # MySQL client library initialization. # [client] # pipe= # socket=MYSQL port=3306 [mysql] no-beep # default-character-set= # SERVER SECTION # ---------------------------------------------------------------------- # # The following options will be read by the MySQL Server. Make sure that # you have installed the server correctly (see above) so it reads this # file. # [mysqld] port = 3306 bind-address = 0.0.0.0 # The next three options are mutually exclusive to SERVER_PORT below. # skip-networking # enable-named-pipe # shared-memory # shared-memory-base-name=MYSQL # The Pipe the MySQL Server will use. # socket=MYSQL # The access control granted to clients on the named pipe created by the MySQL Server. # named-pipe-full-access-group= # The TCP/IP Port the MySQL Server will listen on port=3306 # Path to installation directory. All paths are usually resolved relative to this. # basedir="D:/mysql" # Path to the database root datadir=D:/mysql\Data # The default character set that will be used when a new schema or table is # created and no character set is defined # character-set-server= # The default storage engine that will be used when create new tables when default-storage-engine=INNODB # The current server SQL mode, which can be set dynamically. # Modes affect the SQL syntax MySQL supports and the data validation checks it performs. This # makes it easier to use MySQL in different environments and to use MySQL together with other # database servers. sql-mode="ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION" # General and Slow logging. log-output=FILE general-log=0 general_log_file="WIN-20240617SLP.log" slow-query-log=1 slow_query_log_file="WIN-20240617SLP-slow.log" long_query_time=10 # Error Logging. log-error="WIN-20240617SLP.err" # ***** Group Replication Related ***** # Specifies the base name to use for binary log files. With binary logging # enabled, the server logs all statements that change data to the binary # log, which is used for backup and replication. log-bin="WIN-20240617SLP-bin" # ***** Group Replication Related ***** # Specifies the server ID. For servers that are used in a replication topology, # you must specify a unique server ID for each replication server, in the # range from 1 to 2^32 − 1. "Unique" means that each ID must be different # from every other ID in use by any other source or replica. server-id=1 # Indicates how table and database names are stored on disk and used in MySQL. # Value 0 = Table and database names are stored on disk using the lettercase specified in the CREATE # TABLE or CREATE DATABASE statement. Name comparisons are case-sensitive. You should not # set this variable to 0 if you are running MySQL on a system that has case-insensitive file # names (such as Windows or macOS). If you force this variable to 0 with # --lower-case-table-names=0 on a case-insensitive file system and access MyISAM tablenames # using different lettercases, index corruption may result. # Value 1 = Table names are stored in lowercase on disk and name comparisons are not case-sensitive. # MySQL converts all table names to lowercase on storage and lookup. This behavior also applies # to database names and table aliases. # Value 2 = Table and database names are stored on disk using the lettercase specified in the CREATE TABLE # or CREATE DATABASE statement, but MySQL converts them to lowercase on lookup. Name comparisons # are not case-sensitive. This works only on file systems that are not case-sensitive! InnoDB # table names and view names are stored in lowercase, as for lower_case_table_names=1. lower_case_table_names=1 # This variable is used to limit the effect of data import and export operations, such as # those performed by the LOAD DATA and SELECT ... INTO OUTFILE statements and the # LOAD_FILE() function. These operations are permitted only to users who have the FILE privilege. secure-file-priv="D:/mysql/Uploads" # The maximum amount of concurrent sessions the MySQL server will # allow. One of these connections will be reserved for a user with # SUPER privileges to allow the administrator to login even if the # connection limit has been reached. max_connections=151 # The number of open tables for all threads. Increasing this value increases the number # of file descriptors that mysqld requires. table_open_cache=4000 # Defines the maximum amount of memory that can be occupied by the TempTable # storage engine before it starts storing data on disk. temptable_max_ram=1G # Defines the maximum size of internal in-memory temporary tables created # by the MEMORY storage engine and, as of MySQL 8.0.28, the TempTable storage # engine. If an internal in-memory temporary table exceeds this size, it is # automatically converted to an on-disk internal temporary table. tmp_table_size=128M # The storage engine for in-memory internal temporary tables (see Section 8.4.4, "Internal # Temporary Table Use in MySQL"). Permitted values are TempTable (the default) and MEMORY. internal_tmp_mem_storage_engine=TempTable #*** MyISAM Specific options # The maximum size of the temporary file that MySQL is permitted to use while re-creating a # MyISAM index (during REPAIR TABLE, ALTER TABLE, or LOAD DATA). If the file size would be # larger than this value, the index is created using the key cache instead, which is slower. # The value is given in bytes. myisam_max_sort_file_size=2146435072 # The size of the buffer that is allocated when sorting MyISAM indexes during a REPAIR TABLE # or when creating indexes with CREATE INDEX or ALTER TABLE. myisam_sort_buffer_size=245M # Size of the Key Buffer, used to cache index blocks for MyISAM tables. # Do not set it larger than 30% of your available memory, as some memory # is also required by the OS to cache rows. Even if you're not using # MyISAM tables, you should still set it to 8-64M as it will also be # used for internal temporary disk tables. key_buffer_size=8M # Each thread that does a sequential scan for a MyISAM table allocates a buffer # of this size (in bytes) for each table it scans. If you do many sequential # scans, you might want to increase this value, which defaults to 131072. The # value of this variable should be a multiple of 4KB. If it is set to a value # that is not a multiple of 4KB, its value is rounded down to the nearest multiple # of 4KB. read_buffer_size=128K # This variable is used for reads from MyISAM tables, and, for any storage engine, # for Multi-Range Read optimization. read_rnd_buffer_size=256K #*** INNODB Specific options *** # innodb_data_home_dir= # Use this option if you have a MySQL server with InnoDB support enabled # but you do not plan to use it. This will save memory and disk space # and speed up some things. # skip-innodb # If set to 1, InnoDB will flush (fsync) the transaction logs to the # disk at each commit, which offers full ACID behavior. If you are # willing to compromise this safety, and you are running small # transactions, you may set this to 0 or 2 to reduce disk I/O to the # logs. Value 0 means that the log is only written to the log file and # the log file flushed to disk approximately once per second. Value 2 # means the log is written to the log file at each commit, but the log # file is only flushed to disk approximately once per second. innodb_flush_log_at_trx_commit=1 # The size in bytes of the buffer that InnoDB uses to write to the log files on # disk. The default value changed from 8MB to 16MB with the introduction of 32KB # and 64KB innodb_page_size values. A large log buffer enables large transactions # to run without the need to write the log to disk before the transactions commit. # Thus, if you have transactions that update, insert, or delete many rows, making # the log buffer larger saves disk I/O. innodb_log_buffer_size=16M # The size in bytes of the buffer pool, the memory area where InnoDB caches table # and index data. The default value is 134217728 bytes (128MB). The maximum value # depends on the CPU architecture; the maximum is 4294967295 (232-1) on 32-bit systems # and 18446744073709551615 (264-1) on 64-bit systems. On 32-bit systems, the CPU # architecture and operating system may impose a lower practical maximum size than the # stated maximum. When the size of the buffer pool is greater than 1GB, setting # innodb_buffer_pool_instances to a value greater than 1 can improve the scalability on # a busy server. innodb_buffer_pool_size=128M # Defines the amount of disk space occupied by redo log files. This variable supersedes the # innodb_log_files_in_group and innodb_log_file_size variables. innodb_redo_log_capacity=100M # Defines the maximum number of threads permitted inside of InnoDB. A value # of 0 (the default) is interpreted as infinite concurrency (no limit). This # variable is intended for performance tuning on high concurrency systems. # InnoDB tries to keep the number of threads inside InnoDB less than or equal to # the innodb_thread_concurrency limit. Once the limit is reached, additional threads # are placed into a "First In, First Out" (FIFO) queue for waiting threads. Threads # waiting for locks are not counted in the number of concurrently executing threads. innodb_thread_concurrency=25 # The increment size (in MB) for extending the size of an auto-extend InnoDB system tablespace file when it becomes full. innodb_autoextend_increment=64 # The number of regions that the InnoDB buffer pool is divided into. # For systems with buffer pools in the multi-gigabyte range, dividing the buffer pool into separate instances can improve concurrency, # by reducing contention as different threads read and write to cached pages. innodb_buffer_pool_instances=8 # Determines the number of threads that can enter InnoDB concurrently. innodb_concurrency_tickets=5000 # Specifies how long in milliseconds (ms) a block inserted into the old sublist must stay there after its first access before # it can be moved to the new sublist. innodb_old_blocks_time=1000 # When this variable is enabled, InnoDB updates statistics during metadata statements. innodb_stats_on_metadata=0 # When innodb_file_per_table is enabled (the default in 5.6.6 and higher), InnoDB stores the data and indexes for each newly created table # in a separate .ibd file, rather than in the system tablespace. innodb_file_per_table=1 # Use the following list of values: 0 for crc32, 1 for strict_crc32, 2 for innodb, 3 for strict_innodb, 4 for none, 5 for strict_none. innodb_checksum_algorithm=0 # If this is set to a nonzero value, all tables are closed every flush_time seconds to free up resources and # synchronize unflushed data to disk. # This option is best used only on systems with minimal resources. flush_time=0 # The minimum size of the buffer that is used for plain index scans, range index scans, and joins that do not use # indexes and thus perform full table scans. join_buffer_size=256K # The maximum size of one packet or any generated or intermediate string, or any parameter sent by the # mysql_stmt_send_long_data() C API function. max_allowed_packet=64M # If more than this many successive connection requests from a host are interrupted without a successful connection, # the server blocks that host from performing further connections. max_connect_errors=100 # The number of file descriptors available to mysqld from the operating system # Try increasing the value of this option if mysqld gives the error "Too many open files". open_files_limit=8161 # If you see many sort_merge_passes per second in SHOW GLOBAL STATUS output, you can consider increasing the # sort_buffer_size value to speed up ORDER BY or GROUP BY operations that cannot be improved with query optimization # or improved indexing. sort_buffer_size=256K # Specify the maximum size of a row-based binary log event, in bytes. # Rows are grouped into events smaller than this size if possible. The value should be a multiple of 256. binlog_row_event_max_size=8K # If the value of this variable is greater than 0, a replica synchronizes its master.info file to disk. # (using fdatasync()) after every sync_source_info events. sync_source_info=10000 # If the value of this variable is greater than 0, the MySQL server synchronizes its relay log to disk. # (using fdatasync()) after every sync_relay_log writes to the relay log. sync_relay_log=10000 # Load mysql plugins at start."plugin_x ; plugin_y". # plugin_load # The TCP/IP Port the MySQL Server X Protocol will listen on. 这就是配置文件内容
最新发布
10-03
<think>好的,用户遇到了Stata中迭代次数达到最大限制的报错问题,需要解决方案。首先,我需要回想一下Stata中这类错误的常见原因和处理方法。根据经验,这种情况通常出现在进行数值优化时,比如最大似然估计或非线性回归,算法在默认的迭代次数内未能收敛。 首先,用户可能需要调整迭代次数。Stata的多数命令有`iterate()`选项,允许增加最大迭代次数。例如,在`ml model`或`nl`命令中加入`iterate(1000)`,将次数提高到1000次。但要注意,单纯增加次数不一定能解决问题,可能算法本身存在问题。 其次,检查模型设定是否正确。错误的模型公式或变量选择会导致无法收敛。需要确认因变量和自变量的关系是否合理,是否存在共线性问题。使用`collin`命令检查方差膨胀因子(VIF),若VIF过高,说明存在多重共线性,需处理变量。 然后,考虑初始值的问题。有些复杂模型对初始值敏感,默认初始值可能不合适。用户可以尝试手动设置合理的初始值,比如使用`initial()`选项,或先用简单模型估计结果作为初始值。 算法选择也可能影响收敛。Stata中的`ml`命令支持不同的算法,如牛顿-拉夫森(NR)、BHHH等。切换算法有时能改善收敛性,比如在`ml model`后添加`technique(nr)`或`technique(bhhh)`。 数据问题也不容忽视。异常值或极端值可能导致优化困难。检查数据分布,使用`summarize`和`scatter`等命令识别异常值,必要时进行缩尾处理。此外,数据标准化可能帮助算法收敛,尤其是变量量纲差异大时。 如果以上方法无效,可能需要简化模型,比如减少参数数量,或改用更稳健的估计方法。例如,从非线性模型转为线性模型,或使用两步估计。 最后,查阅官方文档和用户论坛,如Statalist,寻找类似问题的解决方案。如果问题依旧无法解决,可能需要寻求专家帮助。 在回答时,需按照用户要求的结构,分步骤说明解决方案,确保LaTeX格式正确,生成相关问题,并适当引用提供的资料。例如,引用[2]中提到的Java环境问题虽然不相关,但其他引用如[4]比较了Stata和SPSS,可能对用户理解Stata的特性有帮助,但当前问题更关注技术解决,因此引用可能较少,但需确保引用标识正确。</think>### Stata迭代次数达到最大限制的解决方案 当Stata提示“maximum iterations reached”时,通常表示数值优化算法(如最大似然估计、非线性回归等)未能在默认迭代次数内收敛。以下是系统级解决方案: --- #### 1. **调整迭代次数上限** - 在命令中直接指定更大的迭代次数,例如: ```stata ml model lf myprobit (y = x1 x2), technique(nr) iterate(1000) ``` 通过`iterate(1000)`将最大迭代次数提升至1000次[^1]。 --- #### 2. **优化模型设定** - **检查模型合理性**:确认因变量与自变量的数学关系正确,例如逻辑回归中是否误用线性模型公式。错误设定会导致目标函数无法收敛。 - **处理多重共线性**:使用`collin`命令计算方差膨胀因子(VIF),若$VIF > 10$,需删除高相关变量或使用主成分分析(PCA)[^4]。 --- #### 3. **调整初始值(Starting Values)** - 复杂模型对初始值敏感,可手动指定初始值: ```stata nl (y = {b0=1} + {b1=0.5}*x), initial(b0 1 b1 0.5) ``` - 或先用简化模型(如线性回归)估计参数,将其结果作为初始值。 --- #### 4. **切换优化算法** - Stata支持多种优化算法(如`nr`牛顿法、`bhhh`等),切换算法可能改善收敛性: ```stata ml model lf myprobit (y = x1 x2), technique(bhhh) ``` --- #### 5. **检查数据质量** - **异常值处理**:使用`summarize x, detail`和`scatter y x`识别异常值,用`winsor2`进行缩尾处理。 - **数据标准化**:对量纲差异大的变量使用`egen std_x = std(x)`标准化,避免数值计算不稳定。 --- #### 6. **简化模型结构** - 若模型参数过多,尝试减少变量或使用正则化方法(如Lasso): ```stata lasso linear y x1 x2 x3..., selection(cv) ``` --- #### 7. **验证收敛标准** - 放宽收敛阈值(如从$1e-6$调整为$1e-5$),但需谨慎避免降低精度: ```stata ml model lf myprobit (y = x1 x2), gtolerance(1e-5) ``` --- ### 示例代码 ```stata * 调整迭代次数与算法示例 probit y x1 x2 x3, iter(500) tech(nr) ``` ---
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