同构异机迁移方案2_目标服务器仅安装数据库软件scp物理文件

本文主要是介绍同构异机迁移方案2_目标服务器仅安装数据库软件scp物理文件,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!

源端和目标端的数据库版本需要保持一致,补丁版本可以不一致,目标端磁盘空间不能小于源端空间,目标端只需要安装 Oracle 软件即可。

特别说明:本文档案例Oracle的安装路径不同,数据目录一致,采用scp的方式实现同构异机迁移。

迁移背景

ip

os version

os user/password

db version

db user/password

数据量

源库

192.168.40.52

centos7.9 x86_64

root/dhh

11.2.0.4

sys/oracle

87G

目标库

192.168.40.152

centos7.9 x86_64

root/dhh

11.2.0.4

sys/oracle

由于源库服务器剩余的磁盘空间不是很多,采用scp的方式实现同构异机迁移,本文档案例Oracle的安装路径不同,数据目录一致。迁移步骤如下:

迁移前准备

源库

源库数据模拟

该步骤生产环境省略,纯属个人实验环境构建测试数据

--通过数据库主机连接
su - oracle
sqlplus / as sysdba
select sysdate from dual;--操作系统上创建新的数据文件存放目录
[root@11g-db ~]# mkdir -p /data
[root@11g-db ~]# chown -R oracle:oinstall /data/--创建表空间
--创建表空间,大小5m,开启自动扩展
create tablespace test datafile '/data/test01.dbf' size 5M autoextend on NEXT 1M MAXSIZE UNLIMITED LOGGING EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO;--创建临时表空间
create temporary tablespace testtemp tempfile '/data/testtemp01.dbf'
size 50m autoextend on next 1m maxsize unlimited extent management local uniform size 4m;##创建数据库用户
--创建用户,指定默认表空间和临时表空间
create user test identified by test default tablespace test temporary tablespace testtemp account unlock;
--赋予权限  最后的with admin option表示权限转授,可以把本身获得的权限再授权给其他用户
grant dba,connect,resource to test with admin option;
注意:密码最长30位
--切换用户
conn test/test##创建表create table test (id number primary key not null,name varchar2(100));
insert into test values (1,'hm');
insert into test values (2,'xk');
insert into test values (3,'whm');
commit;create table t1 (id  int not null);
beginfor i in 1..10000 loopinsert into t1 values(dbms_random.value()*10000);--如果列是主键--insert into t1 values(i);end loop;
end;
/

确认源库信息服务器信息和物理文件位置

源库内存cpu磁盘信息
--内存
[oracle@shipin04 admin]$ free -gtotal        used        free      shared  buff/cache   available
Mem:            125          10           7          74         107          38
Swap:             0           0           0--cpu
[oracle@shipin04 admin]$ lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                64
On-line CPU(s) list:   0-63
Thread(s) per core:    2
Core(s) per socket:    32
Socket(s):             1
NUMA node(s):          16
...--磁盘
[oracle@shipin04 admin]$ df -Th
Filesystem                  Type      Size  Used Avail Use% Mounted on
/dev/vda3                   xfs       200G   71G  129G  36% /
devtmpfs                    devtmpfs   63G     0   63G   0% /dev
tmpfs                       tmpfs      63G     0   63G   0% /dev/shm
tmpfs                       tmpfs      63G  1.2G   62G   2% /run
tmpfs                       tmpfs      63G     0   63G   0% /sys/fs/cgroup
/dev/vda1                   xfs       197M  114M   84M  58% /boot
tmpfs                       tmpfs      13G     0   13G   0% /run/user/0
/dev/mapper/vg_vdb1-lv_vdb1 ext4      493G  413G   55G  89% /data
由于剩余的磁盘空间不是很多,采用scp的方式实现同构异机迁移
源库oracle软件目录位置
--查$ORACLE_BASE
[oracle@shipin04 ~]$ echo $ORACLE_BASE
/oracle/app--查$ORACLE_HOME
[oracle@shipin04 ~]$ echo $ORACLE_HOME
/oracle/app/product/11.2.0/db_1
源库物理文件位置
su - oracle
export ORACLE_SID=shipin04
sqlplus / as sysdba--查看表空间和数据文件位置
SQL> col tablespace_name for a50
SQL> col file_name for a70
SQL> set linesize 9999
SQL> select tablespace_name,file_name from dba_data_files order by 1;
TABLESPACE_NAME 				   FILE_NAME
-------------------------------------------------- --------------------------------------------------------
SYSAUX						   /oracle/app/oradata/shipin04/sysaux01.dbf
SYSTEM						   /oracle/app/oradata/shipin04/system01.dbf
SYXT						   /data/oracledbf/syxt01.dbf
SYXT						   /data/oracledbf/syxt03.dbf
SYXT						   /data/oracledbf/syxt02.dbf
TOPSP						   /data/oracledbf/topsp01.dbf
TOPSP						   /data/oracledbf/topsp02.dbf
UNDOTBS1					   /oracle/app/oradata/shipin04/undotbs01.dbf
USERS						   /data/oracledbf/users02.dbf
USERS						   /oracle/app/oradata/shipin04/users01.dbf10 rows selected.--查看控制文件:
SQL> select name from v$controlfile;
NAME
--------------------------------------------------------------------------------
/oracle/app/oradata/shipin04/control01.ctl
/oracle/app/fast_recovery_area/shipin04/control02.ctl--查看日志文件:
SQL> col member for a60
SQL> select group#,member,status from v$logfile order by 1;GROUP# MEMBER							STATUS
---------- ------------------------------------------------------------ -------1 /oracle/app/oradata/shipin04/redo01.log2 /oracle/app/oradata/shipin04/redo02.log3 /oracle/app/oradata/shipin04/redo03.log4 /oracle/app/oradata/shipin04/redo04.log5 /oracle/app/oradata/shipin04/redo05.log6 /oracle/app/oradata/shipin04/redo06.log6 rows selected.--参数文件
SQL> show parameter spfile;NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
spfile				     string	 /oracle/app/product/11.2.0/db_1/dbs/spfileshipin04.ora--密码文件
$ORACLE_HOME/dbs 目录下
[oracle@shipin04 dbs]$ ls -l ora*
-rw-r----- 1 oracle oinstall 1536 Jul  8  2023 orapwshipin04--监听文件
$ORACLE_HOME/network/admin
[oracle@shipin04 dbs]$ cd $ORACLE_HOME/network/admin
[oracle@shipin04 admin]$ ls -l
total 16
-rw-r--r-- 1 oracle oinstall 361 Apr 26  2023 listener.ora
drwxr-xr-x 2 oracle oinstall  64 Apr 26  2023 samples
-rw-r--r-- 1 oracle oinstall 381 Dec 17  2012 shrept.lst
-rw-r--r-- 1 oracle oinstall 211 Apr 26  2023 sqlnet.ora
-rw-r----- 1 oracle oinstall 327 Apr 26  2023 tnsnames.ora[oracle@shipin04 ~]$ ls -lh /oracle/app/oradata/shipin04/
total 45G
-rw-r----- 1 oracle oinstall  13M Jan 31 10:11 control01.ctl
-rw-r----- 1 oracle oinstall 501M Jan 31 10:10 redo01.log
-rw-r----- 1 oracle oinstall 501M Jan 31 10:00 redo02.log
-rw-r----- 1 oracle oinstall 501M Jan 31 10:10 redo03.log
-rw-r----- 1 oracle oinstall 501M Jan 31 10:11 redo04.log
-rw-r----- 1 oracle oinstall 501M Jan 31 10:00 redo05.log
-rw-r----- 1 oracle oinstall 501M Jan 31 10:00 redo06.log
-rw-r----- 1 oracle oinstall 2.9G Jan 31 10:10 sysaux01.dbf
-rw-r----- 1 oracle oinstall 791M Jan 31 10:10 system01.dbf
-rw-r----- 1 oracle oinstall  42M Jan 30 22:00 temp01.dbf
-rw-r----- 1 oracle oinstall 6.2G Jan 31 10:10 undotbs01.dbf
-rw-r----- 1 oracle oinstall  32G Jan 31 10:11 users01.dbf[oracle@shipin04 ~]$ ls -lh /data/oracledbf/
total 45G
-rwxrwxr-x 1 oracle oinstall 4.9G Jan 31 10:05 syxt01.dbf
-rwxrwxr-x 1 oracle oinstall 5.0G Jan 31 10:05 syxt02.dbf
-rwxrwxr-x 1 oracle oinstall 4.7G Jan 31 10:05 syxt03.dbf
-rwxrwxr-x 1 oracle oinstall  79M Jan 31 10:05 topsp01.dbf
-rwxrwxr-x 1 oracle oinstall 141M Jan 31 10:05 topsp02.dbf
-rw-r----- 1 oracle oinstall  30G Jan 31 10:08 users02.dbf--查看归档模式
su - oracle
export ORACLE_SID=shipin04
sqlplus / as sysdba
SQL> archive log list;
Database log mode	       Archive Mode
Automatic archival	       Enabled
Archive destination	       /data/archivelogs
Oldest online log sequence     18130
Next log sequence to archive   18135
Current log sequence	       18135

冷备份是最简单的备份方式,但是也是恢复最快的方式。在工作中,冷备份也是会遇到的,这里简单的测试一下。

源库数据量统计
--查看数据量
select sum(bytes)/1024/1024/1024 as "size(G)" from dba_data_files;size(G)
----------
86.2625732select tablespace_name,sum(bytes)/1024/1024/1024 GB from dba_data_files group by tablespace_name;
TABLESPACE_NAME 		       GB
------------------------------ ----------
UNDOTBS1		       6.10351563
SYSAUX			       2.87109375
USERS			       61.8518066
SYXT			       14.4514771
SYSTEM			       .771484375
TOPSP			       .2131958016 rows selected.select round(sum(bytes) / 1024 / 1024 / 1024, 2) || 'G'from dba_segmentswhere owner not in ('MDSYS', 'OUTLN', 'CTXSYS', 'OLAPSYS', 'HR', 'SYSTEM','EXFSYS', 'SCOTT', 'DBSNMP', 'ORDSYS', 'SYSMAN', 'OE', 'PM', 'SH','XDB', 'ORDDATA', 'IX', 'SYS', 'WMSYS') ;
ROUND(SUM(BYTES)/1024/1024/1024,2)||'G'
-----------------------------------------
67.33G--查看用户
set lin1000 pagesize 999
select username,default_tablespace,temporary_tablespace from dba_users where username not in ('SYS','SYSTEM','HR','OUTLN','MGMT_VIEW','FLOWS_FILES','MDSYS','ORDSYS','EXFSYS','DBSNMP','WMSYS','APPQOSSYS','APEX_030200','OWBSYS_AUDIT','ORDDATA','CTXSYS','ANONYMOUS','SYSMAN','XDB','ORDPLUGINS','OWBSYS','SI_INFORMTN_SCHEMA','OLAPSYS','SCOTT','ORACLE_OCM','XS$NULL','BI','PM','MDDATA','IX','SH','DIP','OE','APEX_PUBLIC_USER','SPATIAL_CSW_ADMIN_USR','SPATIAL_WFS_ADMIN_USR');USERNAME		       DEFAULT_TABLESPACE	      TEMPORARY_TABLESPACE
------------------------------ ------------------------------ ------------------------------
XZZSK1			       USERS			      TEMP
XZZSK			       USERS			      TEMP
WANGBIN 		       USERS			      TEMP
SYXK			       USERS			      TEMP--每个业务用户下的总对象数量校验
SELECT D.OWNER,COUNT(1)FROM dba_objects dWHERE d.OWNER   in ('XZZSK1','XZZSK','WANGBIN','SYXK')AND NOT EXISTS (SELECT 1 FROM DBA_RECYCLEBIN B WHERE B.object_name=D.OBJECT_NAME AND D.OWNER=B.owner) GROUP BY D.OWNERORDER BY D.OWNER ;
OWNER				 COUNT(1)
------------------------------ ----------
SYXK				     1770
XZZSK				      467--每个业务用户下的各个对象类别的数量校验
SQL> select OWNER,OBJECT_TYPE,status,count(OBJECT_NAME) from dba_objects  where owner in ('SYXK','XZZSK')  group by OBJECT_TYPE,owner,status order by 1,3,2;OWNER			       OBJECT_TYPE	   STATUS  COUNT(OBJECT_NAME)
------------------------------ ------------------- ------- ------------------
SYXK			       PROCEDURE	     INVALID		  1
SYXK			       VIEW		         INVALID		  1
SYXK			       DATABASE LINK   VALID		    3
SYXK			       INDEX		       VALID		  915
SYXK			       LOB		         VALID		   53
SYXK			       PROCEDURE	     VALID		    1
SYXK			       SEQUENCE 	     VALID		   12
SYXK			       TABLE		       VALID		  769
SYXK			       TRIGGER		     VALID		    2
SYXK			       VIEW		         VALID		   18
XZZSK			       DATABASE LINK   VALID		    5
XZZSK			       FUNCTION 	     VALID		    1
XZZSK			       INDEX		       VALID		   92
XZZSK			       LOB		         VALID		    5
XZZSK			       SEQUENCE 	     VALID		   18
XZZSK			       TABLE		       VALID		  34616 rows selected.--查询回收站lob对象数量(可选),lob数量不一致排查
select owner,type,count(*) from dba_recyclebin group by owner,type order by owner;
OWNER			       TYPE			   COUNT(*)
------------------------------ ------------------------- ----------
SYXK			       INDEX				  1
SYXK			       LOB			  	  5
SYXK			       LOB INDEX		  5
SYXK			       TABLE				 10--数据量统计
----新增count_rows 函数
CREATE OR REPLACE FUNCTION count_rows (table_name IN varchar2, owner IN varchar2 := NULL
)
RETURN number AUTHID current_user
AS
num_rows number;stmt varchar2(2000);
BEGINIF owner IS NULL THENstmt := 'select count(*) from "' || table_name || '"';ELSEstmt := 'select count(*) from "' || owner || '"."' || table_name || '"';END IF;EXECUTE IMMEDIATE stmt INTO num_rows;RETURN num_rows;
END;
/
---调用count_rows 函数,统计各种表的记录数
select table_name, count_rows(table_name) nrows from user_tables  where tablespace_name='ENTSERVICE'
order by nrows desc;        

源库生成参数文件

由于源库和目标库的安装目录不一致,所以需生成源库的参数文件传输到目标库进行更改。

su - oracle
export ORACLE_SID=shipin04
sqlplus / as sysdba--查看数据库实例名
SQL> show parameter name NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
cell_offloadgroup_name		     string
db_file_name_convert		     string
db_name 			     string	 shipin04
db_unique_name			     string	 shipin04
global_names			     boolean	 FALSE
instance_name			     string	 shipin04
lock_name_space 		     string
log_file_name_convert		     string
processor_group_name		     string
service_names			     string	 shipin04--生成pfile参数文件
SQL> create pfile='/home/oracle/pfile_shipin04_bak_20240131.ora' from spfile;
File created.

源库expdp全库备份(可选)

如果时间和磁盘空间允许,可先对源库进行expdp全库备份。本文档案例由于时间和磁盘空间紧张未做该步骤。

sqlplus / as sysdba
SQL>create directory dump_dir as '/oraDB/tmp_backup'
SQL>grant read,write on directory dump_dir to system;
expdp system/oracle directory=dump_dir dumpfile=backup.dmp full=y;

源库关库

--源库停止监听
su - oracle
[oracle@top130 ~]$ lsnrctl status
[oracle@top130 ~]$ lsnrctl stop
[oracle@top130 ~]$ lsnrctl stop--源库杀用户连接 不建议 该步骤慎重 该文档未进行该操作
ps -ef|grep LOCAL=NO|awk '{print $2}'|xargs kill -9--源库关库
su - oracle
export ORACLE_SID=shipin04
sqlplus / as sysdba
SQL> shutdown immediate--查看进程,确认已关库
ps -ef | grep ora_pmon

目标库

目标库内存cpu磁盘信息

--内存
[oracle@syxk01:/home/oracle]$ free -gtotal        used        free      shared  buff/cache   available
Mem:            125          51          73           0           0          72
Swap:            15           0          15--cpu
[oracle@syxk01:/home/oracle]$ lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                64
On-line CPU(s) list:   0-63
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             64
NUMA node(s):          1
Vendor ID:             GenuineIntel
...--磁盘
[oracle@syxk01:/home/oracle]$ df -Th
Filesystem          Type      Size  Used Avail Use% Mounted on
/dev/vda1           xfs       200G   32G  169G  16% /
devtmpfs            devtmpfs   63G     0   63G   0% /dev
tmpfs               tmpfs     126G     0  126G   0% /dev/shm
tmpfs               tmpfs      63G   17M   63G   1% /run
tmpfs               tmpfs      63G     0   63G   0% /sys/fs/cgroup
/dev/mapper/vg1-lv1 xfs       500G   33M  500G   1% /data
tmpfs               tmpfs      13G     0   13G   0% /run/user/54321
tmpfs               tmpfs      13G     0   13G   0% /run/user/0由于源库和目标库内存cpu磁盘配置一样,因此后面参数文件不用更改内存参数,只用改路径就可以了。

安装数据库软件

采用脚本安装,该步骤省略。

--查$ORACLE_BASE
[oracle@syxk01:/home/oracle]$ echo $ORACLE_BASE
/oracle/app/oracle--查$ORACLE_HOME
[oracle@syxk01:/home/oracle]$ echo $ORACLE_HOME
/oracle/app/oracle/product/11.2.0/db
扩展:静默安装数据库步骤

可参考如下:

创建用户

重建主机的Oracle用户 组 统一规范 uid gid 以保证共享存储挂接或其他需求的权限规范

groupadd -g 504 oinstall
groupadd -g 502 dba
useradd -g oinstall -G dba -u 502 oracle
passwd oracle
安装依赖包

安装好Oracle 需要的rpm包。安装rpm依赖包

rpm -q binutils compat-libstdc++-33 elfutils-libelf elfutils-libelf-devel glibc glibc-common glibc-devel gcc- gcc-c++ libaio-devel libaio libgcc libstdc++ libstdc++-devel make sysstat unixODBC unixODBC-devel pdksh ksh
挂载本地yum源
yum install binutils compat-libstdc++-33 elfutils-libelf elfutils-libelf-devel glibc glibc-common glibc-devel gcc- gcc-c++ libaio-devel libaio libgcc libstdc++ libstdc++-devel make sysstat unixODBC unixODBC-devel pdksh ksh
修改配置文件 /etc/security/limits.conf
oracle               soft     nproc    2047
oracle               hard     nproc    16384
oracle               soft     nofile   1024
oracle               hard     nofile   65536
oracle               soft     stack    10240
修改配置文件/etc/sysctl.conf
fs.file-max = 6815744
fs.aio-max-nr = 1048576
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576

重启主机或者输入命令 sysctl -p 生效当前配置

设置oracle 用户环境变量
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1
export PATH=$PATH:$ORACLE_HOME/bin
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib64:/usr/lib64:/usr/local/lib64
export ORACLE_SID=orcl  #根据具体的填写
#如果设置NLS_LANG,容易产生导入sql或dmp出错,因为其他环境下的不是utf8
export NLS_LANG=AMERICAN_AMERICA.AL32UTF8ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1; export ORACLE_HOME
ORACLE_SID=orcl; export ORACLE_SID
PATH=/usr/sbin:/usr/bin:/bin:/sbin:$ORACLE_HOME/bin export PATH

创建$ORACLE_BASE目录并赋予oracle目录权限:

mkdir -p /u01/app/oracle && chown -R oracle:oinstall /u01/app
上传数据库安装软件并用oracle 用户解压
静默安装
修改db_install.rsp文件参数
vi /home/oracle/database/response/db_install.rsp
####
oracle.install.option=INSTALL_DB_SWONLY
ORACLE_HOSTNAME=DB_m2
UNIX_GROUP_NAME=oinstall
INVENTORY_LOCATION=/home/app/oracle/oraInventory
SELECTED_LANGUAGES=en,zh_CN
ORACLE_HOME=/home/app/oracle/product/11.2.0/db_1
ORACLE_BASE=/home/app/oracle
oracle.install.db.InstallEdition=EE
oracle.install.db.DBA_GROUP=dba
oracle.install.db.OPER_GROUP=oinstall
oracle.install.db.config.starterdb.characterSet=AL32UTF8
oracle.install.db.config.starterdb.storageType=FILE_SYSTEM_STORAGE
oracle.install.db.config.starterdb.fileSystemStorage.dataLocation=/home/app/oracle/oradata
oracle.install.db.config.starterdb.fileSystemStorage.recoveryLocation=/home/app/oracle/recovery_data
DECLINE_SECURITY_UPDATES=true    //一定要设为true
####
安装oracle 软件
./runInstaller -responseFile /home/oracle/database/response/db_install.rsp -ignorePrereq -silent
安装监听
netca /silent /responsefile  /home/oracle/database/response/netca.rsp 
修改dbca配置文件
vi /home/oracle/database/response/dbca.rsp
###
RESPONSEFILE_VERSION = "11.2.0"  //不能更改
OPERATION_TYPE = "createDatabase"
GDBNAME = "orcl11gabc.us.oracle.com"  //全局数据库的名字=SID+主机域名
SID = "orcl11gabc"    //对应的实例名字
TEMPLATENAME = "General_Purpose.dbc" //建库用的模板文件
DATAFILEDESTINATION = /home/oracle/oradata //数据文件存放目录
RECOVERYAREADESTINATION=/home/oracle/recovery_data //恢复数据存放目录
CHARACTERSET = "AL32UTF8"   //字符集,重要!!! 建库后一般不能更改,所以建库前要确定清楚。
TOTALMEMORY = "5120"    //oracle内存5120MB
###
安装实例
dbca -silent -responseFile  /home/oracle/database/response/dbca.rsp
卸载oracle 软件
[oracle@db_m2 deinstall]$ pwd
/u01/app/oracle/product/11.2.0/db_1/deinstall
[oracle@db_m2 deinstall]$ ./deinstall
删实例
dbca -silent -deleteDatabase -sourceDB ORCL -sysDBAUserName sys -sysDBAPassword password

传输物理文件

传输参数文件

源库传输参数文件至目标库

将源库/home/oracle/pfile_shipin04_bak_20240131.ora拷贝到目标库的/home/oracle目录。

--源库上操作  传输参数文件
su - oracle
[oracle@shipin04 ~]$ scp -P 422 pfile_shipin04_bak_20240131.ora oracle@172.18.1.130:/home/oracle/

由于源库和目标库内存cpu磁盘配置一样,因此参数文件不用更改内存参数,只用改路径就可以了。

目标库更改参数文件

参数文件中

shipin04.__oracle_base='/oracle/app'#ORACLE_BASE set from environment 为$ORACLE_BASE目录

*.audit_file_dest='/oracle/app/admin/shipin04/adump' 为$ORACLE_BASE目录/admin/shipin04/adump

.control_files中control02.ctl路径为$ORACLE_BASE目录/fast_recovery_area/shipin04/control02.ctl

.db_recovery_file_dest为$ORACLE_BASE目录/fast_recovery_area

.diagnostic_dest为$ORACLE_BASE目录

--目标库操作  备份已传输的参数文件,避免改的有问题重新从源库服务器传输到目标库服务器
[oracle@syxk01:/home/oracle]$ cp pfile_shipin04_bak_20240131.ora pfile_shipin04_bak_20240131.ora_bak02--更改参数文件中的oracle_base目录为目标库的oracle_base目录
su - oracle
vi pfile_shipin04_bak_20240131.ora
:%s#/oracle/app#/oracle/app/oracle#g
更改参数文件中的控制文件路径/oracle/app/fast_recovery_area/shipin04/control02.ctl为
参数文件中的
/oracle/app/oracle/fast_recovery_area/shipin04/control02.ctl语法说明:
:%s#源目录#新目录#g

更改后记得确认,避免更改错误。

更改前

更改pfile_shipin04_bak_20240131.ora参数文件
su - oracle
vi pfile_shipin04_bak_20240131.ora
--更改前
shipin04.__db_cache_size=73819750400
shipin04.__java_pool_size=1879048192
shipin04.__large_pool_size=1073741824
shipin04.__oracle_base='/oracle/app'#ORACLE_BASE set from environment
shipin04.__pga_aggregate_target=21474836480
shipin04.__sga_target=85899345920
shipin04.__shared_io_pool_size=0
shipin04.__shared_pool_size=8053063680
shipin04.__streams_pool_size=536870912
*.audit_file_dest='/oracle/app/admin/shipin04/adump'
*.audit_trail='db'
*.compatible='11.2.0.4.0'
*.control_files='/oracle/app/oradata/shipin04/control01.ctl','/oracle/app/fast_recovery_area/shipin04/control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='shipin04'
*.db_recovery_file_dest='/oracle/app/fast_recovery_area'
*.db_recovery_file_dest_size=107374182400
*.diagnostic_dest='/oracle/app'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=shipin04XDB)'
*.filesystemio_options='SETALL'
*.log_archive_dest_1='location=/data/archivelogs'
*.open_cursors=300
*.pga_aggregate_target=21474836480
*.processes=2000
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_max_size=85899345920
*.sga_target=85899345920
*.undo_tablespace='UNDOTBS1'
更改后
shipin04.__db_cache_size=73819750400
shipin04.__java_pool_size=1879048192
shipin04.__large_pool_size=1073741824
shipin04.__oracle_base='/oracle/app/oracle'#ORACLE_BASE set from environment
shipin04.__pga_aggregate_target=21474836480
shipin04.__sga_target=85899345920
shipin04.__shared_io_pool_size=0
shipin04.__shared_pool_size=8053063680
shipin04.__streams_pool_size=536870912
*.audit_file_dest='/oracle/app/oracle/admin/shipin04/adump'
*.audit_trail='db'
*.compatible='11.2.0.4.0'
*.control_files='/oracle/app/oradata/shipin04/control01.ctl','/oracle/app/oracle/fast_recovery_area/shipin04/control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='shipin04'
*.db_recovery_file_dest='/oracle/app/oracle/fast_recovery_area'
*.db_recovery_file_dest_size=107374182400
*.diagnostic_dest='/oracle/app/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=shipin04XDB)'
*.filesystemio_options='SETALL'
*.log_archive_dest_1='location=/data/archivelogs'
*.open_cursors=300
*.pga_aggregate_target=21474836480
*.processes=2000
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_max_size=85899345920
*.sga_target=85899345920
*.undo_tablespace='UNDOTBS1'

目标库创建参数文件中不存在的目录

目标库所在服务器上创建参数文件中涉及的不存在的目录,从上到下先查目录是否存在若不存在务必创建避免后面步骤报错。

--$ORACLE_BASE目录
[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oracle
drwxrwxr-x 8 oracle oinstall 110 Jan 31 12:01 /oracle/app/oracle--审计目录
[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oracle/admin/shipin04/adump
ls: cannot access /oracle/app/oracle/admin/shipin04/adump: No such file or directory[oracle@syxk01:/home/oracle]$ mkdir -p /oracle/app/oracle/admin/shipin04/adump[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oracle/admin/shipin04/adump
drwxr-xr-x 2 oracle oinstall 6 Jan 31 16:02 /oracle/app/oracle/admin/shipin04/adump--数据目录
[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oradata/shipin04/
ls: cannot access /oracle/app/oradata/shipin04/: No such file or directory[oracle@syxk01:/home/oracle]$ mkdir -p /oracle/app/oradata/shipin04/[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oradata/shipin04/
drwxr-xr-x 2 oracle oinstall 6 Jan 31 16:03 /oracle/app/oradata/shipin04/--控制文件目录
[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oracle/fast_recovery_area/shipin04
ls: cannot access /oracle/app/oracle/fast_recovery_area/shipin04: No such file or directory[oracle@syxk01:/home/oracle]$ mkdir -p /oracle/app/oracle/fast_recovery_area/shipin04[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oracle/fast_recovery_area/shipin04
drwxr-xr-x 2 oracle oinstall 6 Jan 31 16:03 /oracle/app/oracle/fast_recovery_area/shipin04[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oracle/fast_recovery_area
drwxr-x--- 3 oracle oinstall 22 Jan 31 16:03 /oracle/app/oracle/fast_recovery_area--诊断目录
[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oracle
drwxrwxr-x 8 oracle oinstall 110 Jan 31 12:01 /oracle/app/oracle--归档目录
[oracle@syxk01:/home/oracle]$ ls -ld /data/archivelogs
ls: cannot access /data/archivelogs: No such file or directorysu - root
[root@syxk01:/root]$ mkdir -p /data/archivelogs
[root@syxk01:/root]$ chown -R oracle:oinstall /data/archivelogs/
[root@syxk01:/root]$ ls -ld /data/archivelogs/
drwxr-xr-x 2 oracle oinstall 6 Jan 31 16:04 /data/archivelogs/

目标库start nomount启库

su - oracle
[oracle@syxk01:/home/oracle]$ export ORACLE_SID=shipin04
[oracle@syxk01:/home/oracle]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Wed Jan 31 16:08:16 2024Copyright (c) 1982, 2013, Oracle.  All rights reserved.Connected to an idle instance.idle 31-JAN-24> startup nomount pfile='/home/oracle/pfile_shipin04_bak_20240131.ora';
ORACLE instance started.Total System Global Area 8.5516E+10 bytes
Fixed Size		    2262656 bytes
Variable Size		 1.1543E+10 bytes
Database Buffers	 7.3820E+10 bytes
Redo Buffers		  151117824 bytes
idle 31-JAN-24> 

目标库生成spfile参数文件(勿忘记)

该步骤不可省略,因为启库默认查找$ORACLE_HOME/dbs下的spfilesid.ora文件,如果不存在

SQL> create spfile from pfile='/home/oracle/pfile_shipin04_bak_20240131.ora';
SQL> shutdown immediate;
SQL> startup nomount;  --启动到nomount状态

传输控制文件

源库传输控制文件至目标库

源库控制文件位置:

/oracle/app/oradata/shipin04/control01.ctl

/oracle/app/fast_recovery_area/shipin04/control02.ctl

目标库控制文件位置:

/oracle/app/oradata/shipin04/control01.ctl

/oracle/app/oracle/fast_recovery_area/shipin04/control02.ctl

--源库操作 control01.ctl传输
su - oracle
cd /oracle/app/oradata/shipin04/
[oracle@shipin04 ~]$ scp -P 422 control01.ctl oracle@172.18.1.130:/oracle/app/oradata/shipin04/--源库操作 control02.ctl传输
cd /oracle/app/fast_recovery_area/shipin04
[oracle@shipin04 ~]$ scp -P 422 control02.ctl oracle@172.18.1.130:/oracle/app/oracle/fast_recovery_area/shipin04/

目标库启库至mount状态

--目标库操作 启库到mount状态 
SQL> alter database mount;  --启动到mount状态

传输数据文件

源库数据文件位置:

/oracle/app/oradata/shipin04

/data/oracledbf

目标库数据文件位置:

本文档步骤采用目标库保持和源库数据文件位置一样,不存在的目录需提前创建。

目标库目录检查

目标库操作 检查数据文件所有目录是否存在,若不存在,创建不存在的数据目录。

--目标库操作 创建不存在的数据目录
[oracle@syxk01:/home/oracle]$ ls -ld /oracle/app/oradata/shipin04/
drwxr-xr-x 2 oracle oinstall 6 Jan 31 16:03 /oracle/app/oradata/shipin04/
[oracle@syxk01:/home/oracle]$ ls -ld /data/oracledbf
ls: cannot access /data/oracledbf: No such file or directory[root@syxk01:/root]$ mkdir -p /data/oracledbf
[root@syxk01:/root]$ chown -R oracle:oinstall /data/oracledbf/
[root@syxk01:/root]$ ls -ld /data/oracledbf/
drwxr-xr-x 2 oracle oinstall 6 Jan 31 16:29 /data/oracledbf/

源库传输数据文件至目标库

--源库操作  传输数据文件
cd /oracle/app/oradata/shipin04/
[oracle@shipin04 shipin04]$ ls -l
total 46884852
-rw-r----- 1 oracle oinstall    13287424 Jan 31 18:05 control01.ctl
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:05 redo01.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:00 redo02.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:00 redo03.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 17:50 redo04.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 17:50 redo05.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:00 redo06.log
-rw-r----- 1 oracle oinstall  3082821632 Jan 31 18:05 sysaux01.dbf
-rw-r----- 1 oracle oinstall   828383232 Jan 31 18:05 system01.dbf
-rw-r----- 1 oracle oinstall    42999808 Jan 30 22:00 temp01.dbf
-rw-r----- 1 oracle oinstall  6553608192 Jan 31 18:05 undotbs01.dbf
-rw-r----- 1 oracle oinstall 34357911552 Jan 31 18:05 users01.dbf[oracle@shipin04 ~]$ scp -P 422 *.dbf oracle@172.18.1.130:/oracle/app/oradata/shipin04/[oracle@shipin04 shipin04]$ cd /data/oracledbf/
[oracle@shipin04 oracledbf]$ ls -l
total 46680776
-rwxrwxr-x 1 oracle oinstall  5241118720 Jan 31 18:05 syxt01.dbf
-rwxrwxr-x 1 oracle oinstall  5295316992 Jan 31 18:05 syxt02.dbf
-rwxrwxr-x 1 oracle oinstall  4980744192 Jan 31 18:05 syxt03.dbf
-rwxrwxr-x 1 oracle oinstall    82124800 Jan 31 18:05 topsp01.dbf
-rwxrwxr-x 1 oracle oinstall   146808832 Jan 31 18:05 topsp02.dbf
-rw-r----- 1 oracle oinstall 32054976512 Jan 31 18:05 users02.dbf[oracle@shipin04 oracledbf]$ scp -P 422 *.dbf oracle@172.18.1.130:/data/oracledbf/

传输日志文件

源库日志文件位置:/oracle/app/oradata/shipin04/

目标库日志文件位置:/oracle/app/oradata/shipin04/

源库传输日志文件至目标库

--源库操作  传输数据文件
[oracle@shipin04 shipin04]$ ls -l
total 46884852
-rw-r----- 1 oracle oinstall    13287424 Jan 31 18:05 control01.ctl
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:05 redo01.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:00 redo02.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:00 redo03.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 17:50 redo04.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 17:50 redo05.log
-rw-r----- 1 oracle oinstall   524288512 Jan 31 18:00 redo06.log
-rw-r----- 1 oracle oinstall  3082821632 Jan 31 18:05 sysaux01.dbf
-rw-r----- 1 oracle oinstall   828383232 Jan 31 18:05 system01.dbf
-rw-r----- 1 oracle oinstall    42999808 Jan 30 22:00 temp01.dbf
-rw-r----- 1 oracle oinstall  6553608192 Jan 31 18:05 undotbs01.dbf
-rw-r----- 1 oracle oinstall 34357911552 Jan 31 18:05 users01.dbf[oracle@shipin04 ~]$ scp -P 422 *.log oracle@172.18.1.130:/oracle/app/oradata/shipin04/

目标库启库至open

--目标库操作 启库到open状态 
SQL> alter database open;  --启动到mount状态

传输密码文件

源库传输密码文件至目标库

源库密码文件位置:$ORACLE_HOME/dbs 即/oracle/app/product/11.2.0/db_1/dbs

目标库密码文件位置:$ORACLE_HOME/dbs即/oracle/app/oracle/product/11.2.0/db/dbs

--源库操作  传输密码文件
[oracle@shipin04 dbs]$ ls -l
total 12996
-rw-rw---- 1 oracle oinstall     1544 Nov 13 15:55 hc_shipin04.dat
-rw-r--r-- 1 oracle oinstall     2851 May 15  2009 init.ora
-rw-r----- 1 oracle oinstall       24 Apr 26  2023 lkSHIPIN04
-rw-r----- 1 oracle oinstall     1536 Jul  8  2023 orapwshipin04
-rw-r----- 1 oracle oinstall 13287424 Jan 31 00:42 snapcf_shipin04.f
-rw-r----- 1 oracle oinstall     3584 Dec 15 22:00 spfileshipin04.ora
[oracle@shipin04 dbs]$ pwd
/oracle/app/product/11.2.0/db_1/dbs[oracle@shipin04 ~]$ scp -P 422 orapwshipin04 oracle@172.18.1.130:/oracle/app/oracle/product/11.2.0/db/dbs/

传输监听文件(可选)

如果监听文件没有特殊设置可省略该步骤。

本文档案例监听文件没有特殊设置,省略该步骤

目标库停止监听

--目标库操作  停止监听服务
su - oracle
lsnrctl stop
lsnrctl status--目标库操作 监听文件备份
cd /oracle/app/oracle/product/11.2.0/db/network/admin
cp listener.ora listener.ora_old_bak_20240131

源库传输监听文件至目标库

源库监听文件位置:$ORACLE_HOME/dbs 即/oracle/app/product/11.2.0/db_1/network/admin

目标库监听文件位置:$ORACLE_HOME/dbs即/oracle/app/oracle/product/11.2.0/db/network/admin

--源库操作  传输监听文件
cd /oracle/app/product/11.2.0/db_1/network/admin
[oracle@shipin04 admin]$ ls -l
total 16
-rw-r--r-- 1 oracle oinstall 361 Apr 26  2023 listener.ora
drwxr-xr-x 2 oracle oinstall  64 Apr 26  2023 samples
-rw-r--r-- 1 oracle oinstall 381 Dec 17  2012 shrept.lst
-rw-r--r-- 1 oracle oinstall 211 Apr 26  2023 sqlnet.ora
-rw-r----- 1 oracle oinstall 327 Apr 26  2023 tnsnames.ora
[oracle@shipin04 admin]$ pwd
/oracle/app/product/11.2.0/db_1/network/admin[oracle@shipin04 ~]$ scp -P 422 listener.ora oracle@172.18.1.130:/oracle/app/oracle/product/11.2.0/db/network/admin/

目标库启动监听

--目标库操作  启动监听服务
su - oracle
lsnrctl start
lsnrctl status

修改数据库监听配置

alter system set local_listener='(ADDRESS=(PROTOCOL=tcp)(HOST=192.141.0.14)(PORT=1521))';
alter system register;

修改新库主机名

#hostname shipin04
#vi /etc/sysconfig/network
#vi /etc/hosts

目标库数据量统计

目标库数据量统计
--查看数据量
select sum(bytes)/1024/1024/1024 as "size(G)" from dba_data_files;size(G)
----------
86.2625732select tablespace_name,sum(bytes)/1024/1024/1024 GB from dba_data_files group by tablespace_name;
TABLESPACE_NAME 		       GB
------------------------------ ----------
UNDOTBS1		       6.10351563
SYSAUX			       2.87109375
USERS			       61.8518066
SYXT			       14.4514771
SYSTEM			       .771484375
TOPSP			       .2131958016 rows selected.select round(sum(bytes) / 1024 / 1024 / 1024, 2) || 'G'from dba_segmentswhere owner not in ('MDSYS', 'OUTLN', 'CTXSYS', 'OLAPSYS', 'HR', 'SYSTEM','EXFSYS', 'SCOTT', 'DBSNMP', 'ORDSYS', 'SYSMAN', 'OE', 'PM', 'SH','XDB', 'ORDDATA', 'IX', 'SYS', 'WMSYS') ;
ROUND(SUM(BYTES)/1024/1024/1024,2)||'G'
-----------------------------------------
67.33G--查看用户
set lin1000 pagesize 999
select username,default_tablespace,temporary_tablespace from dba_users where username not in ('SYS','SYSTEM','HR','OUTLN','MGMT_VIEW','FLOWS_FILES','MDSYS','ORDSYS','EXFSYS','DBSNMP','WMSYS','APPQOSSYS','APEX_030200','OWBSYS_AUDIT','ORDDATA','CTXSYS','ANONYMOUS','SYSMAN','XDB','ORDPLUGINS','OWBSYS','SI_INFORMTN_SCHEMA','OLAPSYS','SCOTT','ORACLE_OCM','XS$NULL','BI','PM','MDDATA','IX','SH','DIP','OE','APEX_PUBLIC_USER','SPATIAL_CSW_ADMIN_USR','SPATIAL_WFS_ADMIN_USR');USERNAME		       DEFAULT_TABLESPACE	      TEMPORARY_TABLESPACE
------------------------------ ------------------------------ ------------------------------
XZZSK1			       USERS			      TEMP
XZZSK			       USERS			      TEMP
WANGBIN 		       USERS			      TEMP
SYXK			       USERS			      TEMP--每个业务用户下的总对象数量校验
SELECT D.OWNER,COUNT(1)FROM dba_objects dWHERE d.OWNER   in ('XZZSK1','XZZSK','WANGBIN','SYXK')AND NOT EXISTS (SELECT 1 FROM DBA_RECYCLEBIN B WHERE B.object_name=D.OBJECT_NAME AND D.OWNER=B.owner) GROUP BY D.OWNERORDER BY D.OWNER ;
OWNER				 COUNT(1)
------------------------------ ----------
SYXK				     1770
XZZSK				      467--每个业务用户下的各个对象类别的数量校验
SQL> select OWNER,OBJECT_TYPE,status,count(OBJECT_NAME) from dba_objects  where owner in ('SYXK','XZZSK')  group by OBJECT_TYPE,owner,status order by 1,3,2;OWNER			       OBJECT_TYPE	   STATUS  COUNT(OBJECT_NAME)
------------------------------ ------------------- ------- ------------------
SYXK			       PROCEDURE	     INVALID		  1
SYXK			       VIEW		         INVALID		  1
SYXK			       DATABASE LINK   VALID		    3
SYXK			       INDEX		       VALID		  915
SYXK			       LOB		         VALID		   53
SYXK			       PROCEDURE	     VALID		    1
SYXK			       SEQUENCE 	     VALID		   12
SYXK			       TABLE		       VALID		  769
SYXK			       TRIGGER		     VALID		    2
SYXK			       VIEW		         VALID		   18
XZZSK			       DATABASE LINK   VALID		    5
XZZSK			       FUNCTION 	     VALID		    1
XZZSK			       INDEX		       VALID		   92
XZZSK			       LOB		         VALID		    5
XZZSK			       SEQUENCE 	     VALID		   18
XZZSK			       TABLE		       VALID		  34616 rows selected.--查询回收站lob对象数量(可选),lob数量不一致排查
select owner,type,count(*) from dba_recyclebin group by owner,type order by owner;
OWNER			       TYPE			   COUNT(*)
------------------------------ ------------------------- ----------
SYXK			       INDEX				  1
SYXK			       LOB			  	  5
SYXK			       LOB INDEX		  5
SYXK			       TABLE				 10--数据量统计
----新增count_rows 函数
CREATE OR REPLACE FUNCTION count_rows (table_name IN varchar2, owner IN varchar2 := NULL
)
RETURN number AUTHID current_user
AS
num_rows number;stmt varchar2(2000);
BEGINIF owner IS NULL THENstmt := 'select count(*) from "' || table_name || '"';ELSEstmt := 'select count(*) from "' || owner || '"."' || table_name || '"';END IF;EXECUTE IMMEDIATE stmt INTO num_rows;RETURN num_rows;
END;
/
---调用count_rows 函数,统计各种表的记录数
select table_name, count_rows(table_name) nrows from user_tables  where tablespace_name='ENTSERVICE'
order by nrows desc;        


Oracle 冷备份以及恢复——异机备份恢复 - 腾讯云开发者社区-腾讯云

这篇关于同构异机迁移方案2_目标服务器仅安装数据库软件scp物理文件的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!



http://www.chinasem.cn/article/667486

相关文章

Spring Security基于数据库验证流程详解

Spring Security 校验流程图 相关解释说明(认真看哦) AbstractAuthenticationProcessingFilter 抽象类 /*** 调用 #requiresAuthentication(HttpServletRequest, HttpServletResponse) 决定是否需要进行验证操作。* 如果需要验证,则会调用 #attemptAuthentica

服务器集群同步时间手记

1.时间服务器配置(必须root用户) (1)检查ntp是否安装 [root@node1 桌面]# rpm -qa|grep ntpntp-4.2.6p5-10.el6.centos.x86_64fontpackages-filesystem-1.41-1.1.el6.noarchntpdate-4.2.6p5-10.el6.centos.x86_64 (2)修改ntp配置文件 [r

Zookeeper安装和配置说明

一、Zookeeper的搭建方式 Zookeeper安装方式有三种,单机模式和集群模式以及伪集群模式。 ■ 单机模式:Zookeeper只运行在一台服务器上,适合测试环境; ■ 伪集群模式:就是在一台物理机上运行多个Zookeeper 实例; ■ 集群模式:Zookeeper运行于一个集群上,适合生产环境,这个计算机集群被称为一个“集合体”(ensemble) Zookeeper通过复制来实现

CentOS7安装配置mysql5.7 tar免安装版

一、CentOS7.4系统自带mariadb # 查看系统自带的Mariadb[root@localhost~]# rpm -qa|grep mariadbmariadb-libs-5.5.44-2.el7.centos.x86_64# 卸载系统自带的Mariadb[root@localhost ~]# rpm -e --nodeps mariadb-libs-5.5.44-2.el7

Centos7安装Mongodb4

1、下载源码包 curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-4.2.1.tgz 2、解压 放到 /usr/local/ 目录下 tar -zxvf mongodb-linux-x86_64-rhel70-4.2.1.tgzmv mongodb-linux-x86_64-rhel70-4.2.1/

无人叉车3d激光slam多房间建图定位异常处理方案-墙体画线地图切分方案

墙体画线地图切分方案 针对问题:墙体两侧特征混淆误匹配,导致建图和定位偏差,表现为过门跳变、外月台走歪等 ·解决思路:预期的根治方案IGICP需要较长时间完成上线,先使用切分地图的工程化方案,即墙体两侧切分为不同地图,在某一侧只使用该侧地图进行定位 方案思路 切分原理:切分地图基于关键帧位置,而非点云。 理论基础:光照是直线的,一帧点云必定只能照射到墙的一侧,无法同时照到两侧实践考虑:关

MySQL数据库宕机,启动不起来,教你一招搞定!

作者介绍:老苏,10余年DBA工作运维经验,擅长Oracle、MySQL、PG、Mongodb数据库运维(如安装迁移,性能优化、故障应急处理等)公众号:老苏畅谈运维欢迎关注本人公众号,更多精彩与您分享。 MySQL数据库宕机,数据页损坏问题,启动不起来,该如何排查和解决,本文将为你说明具体的排查过程。 查看MySQL error日志 查看 MySQL error日志,排查哪个表(表空间

高效+灵活,万博智云全球发布AWS无代理跨云容灾方案!

摘要 近日,万博智云推出了基于AWS的无代理跨云容灾解决方案,并与拉丁美洲,中东,亚洲的合作伙伴面向全球开展了联合发布。这一方案以AWS应用环境为基础,将HyperBDR平台的高效、灵活和成本效益优势与无代理功能相结合,为全球企业带来实现了更便捷、经济的数据保护。 一、全球联合发布 9月2日,万博智云CEO Michael Wong在线上平台发布AWS无代理跨云容灾解决方案的阐述视频,介绍了

Centos7安装JDK1.8保姆版

工欲善其事,必先利其器。这句话同样适用于学习Java编程。在开始Java的学习旅程之前,我们必须首先配置好适合的开发环境。 通过事先准备好这些工具和配置,我们可以避免在学习过程中遇到因环境问题导致的代码异常或错误。一个稳定、高效的开发环境能够让我们更加专注于代码的学习和编写,提升学习效率,减少不必要的困扰和挫折感。因此,在学习Java之初,投入一些时间和精力来配置好开发环境是非常值得的。这将为我

Android平台播放RTSP流的几种方案探究(VLC VS ExoPlayer VS SmartPlayer)

技术背景 好多开发者需要遴选Android平台RTSP直播播放器的时候,不知道如何选的好,本文针对常用的方案,做个大概的说明: 1. 使用VLC for Android VLC Media Player(VLC多媒体播放器),最初命名为VideoLAN客户端,是VideoLAN品牌产品,是VideoLAN计划的多媒体播放器。它支持众多音频与视频解码器及文件格式,并支持DVD影音光盘,VCD影