然后介绍安全模式修改密码和mysql的全文本搜索功能,需要你指定金沙js娱乐场官方网站-s参数的SQL Server服务名称

具体的错误信息为,LogBackups事务日志备份会追加到同一个备份文件),错误日志里面有下面一些错误信息,如下所示,CHECKDB 遭遇Operating system error 112(failed to retrieve text for this,昨天遇到一个案例,有时候在一些特殊情况下需要在单用户模式下启动SQL Server实例,需要你指定-s参数的SQL Server服务名称,最后记录了个人使用mysql中遇到的问题集,然后介绍安全模式修改密码和mysql的全文本搜索功能

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DESCRIPTION:
BackupDiskFile::CreateMedia: Backup device
‘M:\DB_BACKUP\LOG_BACKUP\xxxx_[2018-07-30_06h03m10_Mon]_logs.TRN’
failed to create. Operating system error 32(failed to retrieve text for
this error. Reason: 15105).

2:SSQL_DBCC10: Operating system error 112(failed to retrieve text for
this error. Reason: 15105) encountered

<err>Error 3202, Severity 16, level 2 : Write on
“M:\DB_BACKUP\LOG_BACKUP\xxxx_[2016-11-22_01h11m05_Tue]_logs.TRN”
failed: 112(error not found)

2:命令模式(net star)启动

可能出现的问题集:

  • 描述

    2017-05-04T01:21:32.004560Z mysqld_safe Logging to ‘/var/log/mysql/error.log’.
    2017-05-04T01:21:32.023009Z mysqld_safe A mysqld process already exists

解决方法:

$ sudo killall mysqld
  • 描述

    2017-05-04T01:22:26.486677Z mysqld_safe Logging to ‘/var/log/mysql/error.log’.
    2017-05-04T01:22:26.488204Z mysqld_safe Directory ‘/var/run/mysqld’ for UNIX socket file don’t exists.

解决方法:

sudo mkdir -p /var/run/mysqld
sudo chown -R mysql:mysql /var/run/mysqld
  • 描述

    $ sudo /etc/init.d/mysql start
    ies: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    [….] Starting mysql (via systemctl): mysql.servicejob-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    Job for mysql.service failed because the control process exited with error code. See “systemctl status mysql.service” and “journalctl -xe” for details.

解决方法:

当前文件夹不是实际目录导致
cd到一个实际目录位置即可
  • 描述

    sudo /etc/init.d/mysql start
    shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    job-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    [….] Starting mysql (via systemctl): mysql.servicejob-working-directory: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
    Job for mysql.service failed because the control process exited with error code. See “systemctl status mysql.service” and “journalctl -xe” for details.

    按照提示:See “systemctl status mysql.service” and “journalctl -xe” for details.
    但是并么有什么卵用,直接看mysql的log:/var/log/mysql/error.log
    2017-05-04T01:37:56.583745Z 0 [Note] InnoDB: Check that you do not already have another mysqld process using the same InnoDB data or log files.

解决方法:

杀掉所有mysqld进程:killall mysqld 
再次sudo /etc/init.d/mysql start 成功
  • 描述

    dpkg被锁定

解决方法

sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock

 

我们一个SQL
Server服务器在执行YourSQLDBa的作业YourSQLDba_FullBackups_And_Maintenance时遇到了错误:

 

 

数据库自动备份

新建备份脚本xxx.sh,输入以下内容

#!/bin/bash

# 要备份的数据库名,多个数据库用空格分开
databases=("db1", "db2") 

# 备份文件要保存的目录,注意当前用户必须用户保存目录的读写权限
basepath='/root/backup/mysql/'

if [ ! -d "$basepath" ]; then
  mkdir -p "$basepath"
fi

# 循环databases数组
for db in ${databases[*]}
  do
    # 备份数据库生成SQL文件
    nice -n 19 /usr/bin/mysqldump -uroot -pcd32d5e86e --database $db > $basepath$db-$(date +%Y%m%d).sql

    # 将生成的SQL文件压缩
    nice -n 19 tar zPcf $basepath$db-$(date +%Y%m%d).sql.tar.gz -C $basepath $db-$(date +%Y%m%d).sql

    # 删除7天之前的备份数据
    find $basepath -mtime +7 -name "*.sql.tar.gz" -exec rm -rf {} \;
  done

  # 删除生成的SQL文件
  rm -rf $basepath/*.sql

使用crontab设置定时任务,在终端输入crontab
-e,加入以下内容,此任务为每天3点自动执行。

0 3 * * * bash xxx.sh(此处填写脚本绝对地址)

一台数据库服务器的事务日志备份作业偶尔会出现几次备份失败的情况,具体的错误信息为:

 

 

 

首先介绍mysql的安装和基本使用、进阶操作、讲解mysql的导入导出和自动备份,然后介绍安全模式修改密码和mysql的全文本搜索功能,最后记录了个人使用mysql中遇到的问题集,闲暇时我也会多看几次,巩固下基础吧。

     The
process cannot access the file because it is being used by another
process.

 

</Exec>

2018-04-06
11:41:59.01 Server      initerrlog:
Could not open error log file ‘C:

安全模式操作

进入安全模式修改密码

mysqld_safe --skip-grant-tables &

select user,host,password from user where user="root"

不同版本的mysql修改用户密码方式不一样,需要查看mysql->user中的密码字段,如果不是password的话就是authentication_string。

authentication_string的修改方式不太一样:

use mysql;
update user set authentication_string=PASSWORD("") where User='root';
update user set plugin="mysql_native_password";
flush privileges;
quit;
sudo /etc/init.d/mysql stop
sudo /etc/init.d/mysql start

如果不是authentication_string,则可用以下方法。

update user set password=PASSWORD("your_password") where user="root" and host=“localhost"

 

 

金沙js娱乐场官方网站 1

 

新操作

Mysql全文本搜索

Mysql5.6之后支持InnoDB,中文的全文本搜索,内置使用n-gram为分词处理器,还支持中文~。

创建索引

create fulltext index ngram_idx on tag(Title) with parser ngram;
或
alter table tag add fulltext index ngram_idx(Title) with parser ngram;

获取支持的最小分词长度

SHOW VARIABLES LIKE 'ft_min_word_len';
//unix系统可在/etc/my.cnf中修改
[mysqld]
ft_min_word_len = 1

开始使用

select Title,match(Title) against('清水') from tag ;

 

 

后面检查发现这个数据库的日志文件暴增,已经超过数据文件的大小。如下截图所示,所以即使磁盘空间还有不少(19G),部署的磁盘空间告警作业亦正常,没有出现告警,但是已经不能足够支撑事务日志备份完成。所以出现了这个问题,问题有点隐蔽,不过只要细心,问题真相就能水落石出。剔除几个老旧备份以及已经上带的备份,腾出了一些磁盘空间,重新运行作业,作业执行成功!

The
SQL Server Agent (MSSQLSERVER) service was stopped successfully.

导入导出

导出数据和表结构:

mysqldump -uroot -p abc(数据库名) > abc.sql
敲回车后输入密码

只导出表结构

mysqldump -uroot -p -d abc > abc.sql

导入数据库
1、首先建空数据库

mysql> create database abc;

2、导入数据库

mysql -u root -p abc(数据库名) < abc.sql

 

其实在白天的时候,该服务器就已经有磁盘空间告警邮件发出,由于系统管理员想在周末做存储扩容。所以在晚上数据库做DBCC
CHECKDB时,就由于磁盘空间不足,遭遇了这个错误。DBCC
CHECKDB时会生成数据库快照,而数据库的快照文件是基于稀疏文件(Sparse
File),而当快照创建后,随着对源数据库的改变逐渐增多,稀疏文件也会慢慢增长。所以,当磁盘空间不足时,就会遇到下面错误信息:

<Exec>

The
SQL Server (MSSQLSERVER) service was stopped successfully.

开启日志记录

[mysqld]
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
max_binlog_size = 1000M
binlog-format = row

COMMENT:  (None)

Source spid13s

这个“failed
:112”信息一出现,意味着肯定是磁盘空间不够,昨天总结的那篇博客DBCC
CHECKDB 遭遇Operating system error 112(failed to retrieve text for this
error. Reason: 15105)
encountered其实遇到的问题也是类似的,Operating
System error 112 meaning There is not enough space on the disk.

 

基础使用

sudo apt-get install mysql-common mysql-server

简单使用:建库

CREATE DATABASE IF NOT EXISTS yourdbname DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

建表

create table MyClass(id int(4) not null primary key auto_increment,name char(20) not null,sex int(4) not null default '0',degree double(16,2));

增加

insert into MyClass values(1,'Tom',96.45),(2,'Joan',82.99), (2,'Wang', 96.59);

删除

delete from MyClass where id=1;

修改

update MyClass set name='Mary' where id=1;

查询

select * from MyClass;

显示所有视图

select * from information_schema.TABLES where table_type='view' AND table_schema = '数据库名';

创建用户

create user xxx identified by 'password';

重命名

rename user aaa to bbb;

删除用户

drop user aaa;

显示权限

show grants for aaa(用户);

授予权限

grant select on xxx(数据库).* to aaa(用户);

授予某个数据库的全部权限

grant all on  xxx(数据库).* to aaa(用户);
grant all on  xxx(数据库).* to aaa(用户)@localhost;

取消授权

revoke all on *.* from aaa(用户)@localhost;

修改权限

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%’   WITH GRANT OPTION;

以上操作完成之后记得刷新权限:

flush privileges;

      关于Operating
system error 32,这个错误代码对应的错误信息为:

 

 

 

   其实以前刚好遇到过这样的案例,使用AplexSQL
Log去分析事务日志的备份文件,YourSQLDba的事务日志备份的时候,就会遇到上面错误(YourSQLDba_LogBackups事务日志备份会追加到同一个备份文件),但是这个怎么定位这个错误呢?其实出现这个错误,一定有相关进程在访问事务日志备份文件,那么只要排查这些应用或程序即可。刚好最近配置了AWS的DMS的(DMS简单介绍如下,具体参考官方文档

</row>

<Sql>

C:\Users>net
stop mssqlserver

 

 

<ctx>yMaint.backups</ctx>

The
SQL Server Agent (MSSQLSERVER) service is stopping.

 

 

 

 

Date 2016/11/17 0:53:21

</Sql>

在SQL
Server的数据库维护过程中,有时候在一些特殊情况下需要在单用户模式下启动SQL Server实例。
下面总结一下单用户模式启动SQL Server的几种方式:

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Source spid67

with noInit, checksum, name = ‘YourSQLDba:16h16:
M:\DB_BACKUP\LOG_BACKUP\xxxx_[2016-11-22_01h11m05_Tue]_logs.TRN’

 

 

D:\xxx\xxxx\xxxxx.ndf:MSSQL_DBCC10:
Operating system error 112(failed to retrieve text for this error.
Reason: 15105) encountered.

昨天遇到一个案例,YourSQLDba做事务日志备份时失败,检查YourSQLDba输出的错误信息如下:

 

 

CHECKDB From Every Angle: Why would CHECKDB run out of
space?

to disk =
‘M:\DB_BACKUP\LOG_BACKUP\xxxx_[2016-11-22_01h11m05_Tue]_logs.TRN’

C:\Windows\system32>net
start mssqlserver /m”Microsoft SQL Server Management Studio –
Query”

 

1:Write to sparse file ‘xxxxxxx.ndf:MSSQL_DBCC10’ failed due to lack
of disk

backup log [gewem]

 

JOB
RUN: 
(None)

此时由于磁盘空间不足,就会导致DBCC CHECKDB停止。关于DBCC
CHECKDB耗用大量额外磁盘空间,可以参考下面这篇博客。

</err>

 

 

 SELECT /* top 50000 */

        [Current LSN] ,

        [Operation] ,

        [Context] ,

        [Transaction ID] ,

        [Transaction Name] ,

        [Begin Time] ,

        [End Time] ,

        [Flag Bits] ,

        [PartitionId] ,

        [Page ID] ,

        [Slot ID] ,

        [RowLog Contents 0] ,

        [Log Record] ,

        [RowLog Contents 1]

 FROM   sys.fn_dump_dblog(@P1, NULL, NULL, 11,

                          'M:\DB_BACKUP\LOG_BACKUP\xxxx_[2018-08-01_06h06m19_Wed]_logs.TRN',

                          NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

                          NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

                          NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

                          NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

                          NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

                          NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

                          NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL)

 WHERE  [Current LSN] COLLATE SQL_Latin1_General_CP1_CI_AS >= @P2 COLLATE SQL_Latin1_General_CP1_CI_AS

        AND ( ( [Operation] IN ( 'LOP_COMMIT_XACT', 'LOP_ABORT_XACT' )

                OR ( [Operation] = 'LOP_BEGIN_XACT' /* and [Transaction SID]=SUSER_SID('') */ )

              )

              OR ( ( ( [Operation] IN ( 'LOP_INSERT_ROWS', 'LOP_DELETE_ROWS' )

                       AND [Context] IN ( 'LCX_HEAP', 'LCX_CLUSTERED',

                                          'LCX_MARK_AS_GHOST' )

                     )

                     OR ( [Operation] IN ( 'LOP_INSERT_ROWS', 'LOP_MODIFY_ROW' )

                          AND [Context] = 'LCX_TEXT_MIX'

                          AND DATALENGTH([RowLog Contents 0]) IN ( 0, 14, 28 )

                        )

                   )

                   AND [PartitionId] IN ( 72057596166537216, 72057596166471680,

                                          72057596166406144, 72057596327559168,

                                          72057596160180224, 72057596361506816,

                                          72057596119613440, 72057596119744512,

                                          72057596119678976, 72057596120006656,

                                          72057596119941120, 72057596120137728,

                                          72057596545859584, 72057596119810048,

                                          72057596231417856, 72057596418523136,

                                          72057596441067520, 72057596381364224,

                                          72057594562543616, 72057596104671232,

                                          72057594585808896, 72057594585874432,

                                          72057596242952192, 72057596168962048,

                                          72057596054994944, 72057596055453696,

                                          72057596035072000, 72057596055126016,

                                          72057596091039744, 72057596381495296,

                                          72057596381560832, 72057596524298240,

                                          72057595958067200, 72057596469116928,

                                          72057596462628864, 72057596454699008,

                                          72057596241641472, 72057595958853632,

                                          72057594563526656, 72057594563657728,

                                          72057594563723264, 72057596502802432,

                                          72057596484845568, 72057596484911104,

                                          72057596575285248, 72057596554575872,

                                          72057596485107712, 72057596485238784,

                                          72057596485304320, 72057596485369856,

                                          72057596551430144, 72057596485500928,

                                          72057594601275392, 72057594621394944,

                                          72057596548677632, 72057596561719296,

                                          72057596218638336, 72057596376842240,

                                          72057596357443584, 72057596357509120,

                                          72057596358164480, 72057596112207872,

                                          72057596023865344, 72057595959902208,

                                          72057595961081856, 72057594588889088,

                                          72057596112142336, 72057596410003456,

                                          72057595938275328, 72057596192096256,

                                          72057596192161792, 72057596367208448,

                                          72057595961868288, 72057596245508096,

                                          72057596250554368, 72057594565689344,

                                          72057596192227328, 72057596192292864,

                                          72057596248326144, 72057596248391680,

                                          72057594565754880, 2465937948672,

                                          72057596374810624, 72057594565885952,

                                          72057596133113856, 72057596563357696,

                                          48281791823872, 116258596192256,

                                          72057596132851712, 72057595963179008,

                                          72057596541861888, 72057594599047168,

                                          53296886710272, 72057595944894464,

                                          72057594566934528, 72057594567000064,

                                          72057596526395392, 72057596526592000,

                                          72057595964030976, 72057595965079552,

                                          72057594582859776, 72057594567917568,

                                          72057596525936640, 72057595908128768,

                                          72057594568048640, 119223456956416,

                                          72057594896711680, 72057594588758016,

                                          72057596133179392, 72057596132786176,

                                          72057595965931520, 72057595966455808,

                                          72057596450177024, 72057595966849024,

                                          112563398705152, 72057596184363008,

                                          72057596184428544, 72057594681425920,

                                          72057596309733376, 72057596205334528,

                                          72057596184231936, 72057595458355200,

                                          107370836852736, 72057595852423168,

                                          72057595708702720, 72057596357312512,

                                          72057596357378048, 72057596550119424,

                                          72057596301279232, 72057596357050368,

                                          72057596356984832, 72057596362293248,

                                          72057596357574656, 72057596357246976,

                                          72057596357181440, 72057596301344768,

                                          72057595809890304, 72057595873591296,

                                          72057595969011712, 72057595969536000,

                                          72057596348858368, 72057595970191360,

                                          72057596217917440, 72057596217982976,

                                          72057596526329856, 72057596332212224,

                                          114660558176256, 72057596526460928,

                                          72057596331687936, 72057596331622400,

                                          72057595970781184, 72057596574826496,

                                          72057596317859840, 72057594572242944,

                                          72057594592952320, 72057595971502080,

                                          72057595991228416, 72057596324282368,

                                          72057596220538880, 72057595972943872,

                                          72057596512370688, 72057594640334848,

                                          72057595973730304, 72057596132655104,

                                          72057594573684736, 72057594574012416,

                                          72057594776649728, 72057595974320128,

                                          72057594574798848, 45591660199936,

                                          72057594590920704, 72057595974778880,

                                          72057594593738752, 72057595975106560,

                                          72057595975696384, 72057595937882112,

                                          140014173224960, 72057594576240640,

                                          72057594576502784, 72057596501819392,

                                          72057596188360704, 72057596526264320,

                                          61775963815936, 56442625916928,

                                          72057596350365696, 14271632703488,

                                          72057596268838912, 72057596575744000,

                                          72057596442836992, 72057596459089920,

                                          72057596440281088, 72057596469444608,

                                          72057596413935616, 72057596414001152,

                                          72057596532293632, 72057596413739008,

                                          72057596414066688, 72057596548743168,

                                          72057596548612096, 72057596195110912,

                                          72057596448014336, 72057594576961536,

                                          72057594581614592, 72057594577354752,

                                          72057596310061056, 72057596488384512,

                                          72057594577813504, 72057596309995520,

                                          72057596181151744, 72057594577551360 )

                 )

              OR ( [Operation] = 'LOP_HOBT_DDL' )

            ); 

Exec YourSQLDba.Maint.ShowHistoryErrors @JobNo = 1227

金沙js娱乐场官方网站 3

 

DATE/TIME:    2018/7/30
12:10:52

<err>In case of non-completion of this command check SQLServer
Error Log at 2016-11-17 00:00:03.327 for Spid 67</err>

Error 3013, Severity 16, level 1 : BACKUP LOG is terminating abnormally.

 

 

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金沙js娱乐场官方网站 5

The
SQL Server (MSSQLSERVER) service is stopping.

在最基本级别上,AWS DMS 是 AWS
云中运行复制软件的服务器。您创建源和目标连接以告知 AWS DMS
要进行提取和加载的位置。然后,计划在此服务器上运行以迁移数据的任务。AWS DMS
会创建表和关联的主键 (如果它们在目标上不存在)。如果您愿意,则可以预先手动创建目标表。或者,也可以使用 AWS SCT
创建部分或全部目标表、索引、视图、触发器等。

 

 

 

 

Date 2016/11/17 0:53:21

当时检查时,发现磁盘空间还剩下十多G,然后自己手工又将代码取出,手工执行测试,依然报这个错误:

2018-04-06
11:40:54.15 Server      Multiple
instances of SQL server are installe

 

 

backup log [xxxx] 

to disk = 'M:\DB_BACKUP\LOG_BACKUP\xxxx_[2016-11-22_01h11m05_Tue]_logs.TRN' 

with noInit, checksum, 

NAME = 'YourSQLDba:00h10: M:\DB_BACKUP\LOG_BACKUP\xxxx_[2016-11-22_01h11m05_Tue]_logs.TRN'

sqlservr.ex启动时,如果SQL
Server服务本身还在运行,就会报“Operating
system error = 32(The process cannot access the file because it is being
used by another process.).

 

Message

 

 

 

 

在单用户模式下启动SQL Server实例时,SQL Server Management Studio
可以连接到 SQL
Server。 但是Management
Studio中的对象资源管理器可能会失败,因为在某些操作中它需要使用多个连接。 若要在单用户模式下管理 SQL
Server,可以执行
Transact-SQL 语句(仅通过 Management Studio
中的查询编辑器连接)或者使用 sqlcmd
实用工具。

 

 

在单用户模式下,
只有一个用户可以连接到服务器,那么这样问题就来了,很有可能当你需要登录的时候,这个唯一的的用户已经被其它用户捷足先登了。此时你却被拒之门外,是否相当抓狂。此时你可能遇到下面错误

 

错误日志里面有下面一些错误信息,如下所示:

 

 

Write to sparse file
‘xxxxxxx.ndf:MSSQL_DBCC10’ failed due to lack of disk space.

2018-04-06
11:41:59.32 Server      Error: 17058,
Severity: 16, State: 1.

因为DMS有时候会读取事务日志备份文件中的内容,通过DPA监控,刚好找的了这个DMS的账号,在事务日志备份的时间点在执行下面SQL语句(如下所示)。那么就是因为这个进程在读取事务日志备份中内容(跟普通的Replication有点不同),导致事务日志备份出现Operating
system error 32错误(The
process cannot access the file because it is being used by another
process)

<row>

C:\Windows\system32>net
stop mssqlserver

Date 2016/11/17 0:53:21

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Log SQL Server (Archive #8 – 2016/11/18
0:00:00)

 

 

xxx’.
Reason: Server is in single user mode. Only one administrator c