Oracle 11g升级至11.2.0.3
补丁在百度网盘里面
一.查看DB 相关的信息
我们安装的是64位的DB。
[oracle@dave ~]$ sqlplus / as sysdba;
SQL*Plus: Release 11.2.0.1.0 Production onWed Sep 28 10:23:51 2011
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise EditionRelease 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Miningand Real Application Testing options
SQL> select name from v$database;
NAME
———
ANQING
查看 Oracle 是32位还是64位的方法
http://blog.csdn.net/tianlesoftware/article/details/6818709
二.升级的相关说明
这部分内容copy 自patchset的readme 文档。
Oracle 11.2.0.2 和 11.2.0.3 的patchset都是完整的安装包。所以可以直接用来安装。
Note the following changes with the newpatch set packaging:
(2)Directupgrades from previous releases to the most recent patch set are supported.
2.1.1 In-Place Upgrade
将升级文件安装到原来的Oracle home 目录,这样可以节省磁盘空间,但是需要更多的downtime。 这种并不推荐。
2.1.2 Out-of-Place Upgrade
可以将Oracle Database 安装的新的OracleHome directory,当安装结束后,旧的database 会迁移到新的Oracle homedirectory。
这种方法是oracle推荐的方式,它可以降低downtime 时间,也相对更安全。但是这种方法需要2倍的地盘空间,不过对与现在白菜价硬盘来说,这点空间也不算什么了。
2.2 升级步骤
Oracle 10g的Readme上有详细的升级步骤,但是11g的Readme上并没有详细的升级说明,需要参考官方文档。
Oracle 10g upgrade from10.2.0.1 to 10.2.0.4
http://blog.csdn.net/tianlesoftware/article/details/5507762
http://download.oracle.com/docs/cd/E11882_01/server.112/e23633/upgrade.htm#i1011372
我这里也是一个单实例的升级,相对较简单,如果是RAC的升级,估计还要费劲一点,11gR2RAC 升级后面会继续进行测试。
三.具体升级操作
3.1 备份DB
我这里是测试环境,就不进行备份,如果是生产环境,切记要先备份,后操作。
如果是In-Place Upgrade,同时备份一下整个ORACLE_HOME目录。 如果升级有问题,还可以还原回来。
ORACLE_HOME/oc4j/j2ee/OC4J_DBConsole_hostname_dbname
3.2 升级Oracle database 软件
注意这里,我们选择第三个选项,skip software update,因为我们的patchset已经下载过了,如果选择第二个选项,会遇到如下错误,
INS-20704 Thelocation provided is not in the expected directory structure
./runInstaller –downloadUpdates
但是这个命令需要收费的Metalink帐号。 MOS 的相关文档:
How To Download The Latest Updates AndPatches Using 11.2.0.2 OUI [ID 1295074.1]
注意这里的安装位置,我之前的安装目录是11.2.0. 这里我改成了11.2.0.3. 即将oracle 安装到其他位置,这样可以减少宕机时间,也是oracle 推荐的方法。
注意这里的Inventory directory,这里用来存放安装文件的,我们之前安装过DB,所以这个目录已经存在,2种解决方法,删除之前的目录,二放到其他目录,我这里将安装文件存放到其他目录。
[root@dave oraInventory]#/u01/app/oraInventory2/orainstRoot.sh
Changing permissions of/u01/app/oraInventory2.
Adding read,write permissions for group.
Removing read,write,execute permissions forworld.
Changing groupname of/u01/app/oraInventory2 to oinstall.
The execution of the script is complete.
[root@dave oraInventory]#/u01/app/oracle/product/11.2.0.3/db_1/root.sh
Performing root user operation for Oracle11g
The following environment variables are setas:
ORACLE_HOME= /u01/app/oracle/product/11.2.0.3/db_1
Enter the full pathname of the local bindirectory: [/usr/local/bin]:
Copying dbhome to /usr/local/bin …
Copying oraenv to /usr/local/bin …
Copying coraenv to /usr/local/bin …
Entries will be added to the /etc/oratabfile as needed by
Database Configuration Assistant when adatabase is created
Finished running generic part of rootscript.
Now product-specific root actions will beperformed.
Finished product-specific root actions.
这里会提示我们配置监听,因为监听之前已经存在,所以这里取消监听配置。
我们点击下一步时,会提示一些配置失败,是否继续,我们点是。 结束Oracle database 软件的安装。
从上面来看,如果没有错误,在监听配置完毕会,会自动调用DBUA 来升级我们的实例。 这里我们配置失败,正好验证下手工升级实例。
3.3 配置新的ORACLE_HOME
这部分工作,主要是准备新的ORACLE_HOME,因为我们的Oracle database 安装到了新的位置,所以我们需要配置一下相关的信息。
这部分即使在上面自动调用了DBUA,我们也还是需要进行操作的。
To prepare the new Oracle home:
Make sure yousave all of the files you modified after making these adjustments.
我们重新指定了ORACLE_HOME,需要更新到.bash_profile 里。
5. 修改/etc/oratab,该目录下也有ORACLE_HOME
[oracle@dave db_1]$ cat /etc/oratab
anqing:/u01/app/oracle/product/11.2.0.3/db_1:N
具体操作步骤:
/u01/app/oracle/product/11.2.0/db_1/dbs
[oracle@dave dbs]$ cp * /u01/app/oracle/product/11.2.0.3/db_1/dbs/
/u01/app/oracle/product/11.2.0/db_1/network/admin
listener11092710PM3007.bak samples sqlnet11092710PM3007.bak tnsnames11092710PM3007.bak
listener.ora shrept.lst sqlnet.ora tnsnames.ora
[oracle@dave admin]$ cp -R * /u01/app/oracle/product/11.2.0.3/db_1/network/admin
[oracle@dave admin]$ cat /home/oracle/.bash_profile|grep ORACLE_HOME
ORACLE_HOME=$ORACLE_BASE/product/11.2.0.3/db_1; export ORACLE_HOME
TNS_ADMIN=$ORACLE_HOME/network/admin;exportTNS_ADMIN
PATH=$ORACLE_HOME/bin:$PATH; export PATH
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib;export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/jre:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib;export CLASSPATH
3.4 Pre-Upgrade Information Tool 说明
To run the Pre-Upgrade Information Tool
1. Log in to the system as theowner of the environment of the database being upgraded.
3. Connect to the databaseinstance as a user with SYSDBA privileges.
4. Set the system to spool resultsto a log file for later analysis:
5. Run the Pre-Upgrade InformationTool:
SQL>@$11g_ORACLE_HOME/rdbms/admin/utlu112i.sql
6. Turn off the spooling of scriptresults to the log file:
SQL>@/u01/app/oracle/product/11.2.0.3/db_1/rdbms/admin/utlu112i.sql
Oracle Database 11.2 Pre-UpgradeInformation Tool 09-28-2011 19:32:36
Script Version: 11.2.0.3.0 Build: 001
**********************************************************************
**********************************************************************
**********************************************************************
Tablespaces: [make adjustments in thecurrent environment]
**********************************************************************
–> SYSTEM tablespace is adequate forthe upgrade.
…. minimum required size: 686 MB
–> SYSAUX tablespace is adequate forthe upgrade.
…. minimum required size: 484 MB
–> UNDOTBS1 tablespace is adequate forthe upgrade.
…. minimum required size: 400 MB
–> TEMP tablespace is adequate for theupgrade.
…. minimum required size: 60 MB
–> EXAMPLE tablespace is adequate forthe upgrade.
…. minimum required size: 78 MB
**********************************************************************
**********************************************************************
**********************************************************************
Update Parameters: [Update Oracle Database11.2 init.ora or spfile]
Note: Pre-upgrade tool was run on a lowerversion 64-bit database.
**********************************************************************
–> If Target Oracle is 32-Bit, referhere for Update Parameters:
– No update parameter changes arerequired.
–> If Target Oracle is 64-Bit, referhere for Update Parameters:
– No update parameter changes arerequired.
**********************************************************************
Renamed Parameters: [Update Oracle Database11.2 init.ora or spfile]
**********************************************************************
– No renamed parameters found. No changesare required.
**********************************************************************
Obsolete/Deprecated Parameters: [UpdateOracle Database 11.2 init.ora or spfile]
**********************************************************************
– No obsolete parameters found. No changesare required
**********************************************************************
Components: [The following databasecomponents will be upgraded or installed]
**********************************************************************
–> Oracle Catalog Views [upgrade] VALID
–> Oracle Packages and Types [upgrade] VALID
–> JServer Java Virtual Machine[upgrade] VALID
–> Oracle XDK for Java [upgrade] VALID
–> Oracle Workspace Manager [upgrade] VALID
–> OLAP Analytic Workspace [upgrade] VALID
–> OLAP Catalog [upgrade] VALID
–> EM Repository [upgrade] VALID
–> Oracle Text [upgrade] VALID
–> Oracle XML Database [upgrade] VALID
–> Oracle Java Packages [upgrade] VALID
–> Oracle interMedia [upgrade] VALID
–> Expression Filter [upgrade] VALID
–> Rule Manager [upgrade] VALID
–> Oracle Application Express [upgrade] VALID
… APEX will only be upgraded if theversion of APEX in
… the target Oracle home is higher thanthe current one.
–> Oracle OLAP API [upgrade] VALID
**********************************************************************
**********************************************************************
WARNING: –> Database is using atimezone file older than version 14.
…. After the release migration, it isrecommended that DBMS_DST package
…. be used to upgrade the 11.2.0.1.0database timezone version
…. to the latest version which comes withthe new release.
WARNING: –> Your recycle bin is turnedon and currently contains no objects.
…. Because it is REQUIRED that therecycle bin be empty prior to upgrading
…. and your recycle bin is turned on, youmay need to execute the command:
…. prior to executing your upgrade toconfirm the recycle bin is empty.
WARNING: –> Database contains schemaswith objects dependent on DBMS_LDAP package.
…. Refer to the 11g Upgrade Guide forinstructions to configure Network ACLs.
…. USER APEX_030200 has dependentobjects.
*********************************************************************
*********************************************************************
Oracle recommends gathering dictionarystatistics prior to upgrading the database.
To gather dictionary statistics execute thefollowing command while connected as SYSDBA:
EXECUTE dbms_stats.gather_dictionary_stats;
*********************************************************************
Oracle recommends reviewing any definedevents prior to upgrading.
To view existing non-default events executethe following commands
SELECT (translate(value,chr(13)||chr(10),' ')) FROM sys.v$parameter2
WHERE UPPER(name) ='EVENT'AND isdefault='FALSE'
SELECT (translate(value,chr(13)||chr(10),' ')) from sys.v$parameter2
WHERE UPPER(name) = '_TRACE_EVENTS' AND isdefault='FALSE'
Changes will need to be made in theinit.ora or spfile.
*********************************************************************
3.5 升级Instance
升级Instance 有两种方法,第一种是使用dbua工具,第二种是手工执行脚本。
3.5.1 使用DBUA 工具
3.5.1.1 DBUA 工具在升级instance前会检查如下选项:
(1) Invalid user accounts or roles
(2) Invalid data types or invalidobjects
(3) Desupported character sets
(4) Adequate resources, includingrollback segments, tablespaces, and free disk space
(5) Missing SQL scripts needed forthe upgrade
(7) Oracle Database software linkedwith Database Vault option
3.5.2 手工使用命令升级实例
2.If your operatingsystem is Windows, then complete the following steps:
C:\> NET STOPOracleServiceORCL
(2)Delete the Oracle service at a command prompt using ORADIM.
If your SID is ORCL, thenenter the following command:
C:\> ORADIM-NEW -SID SID -SYSPWD PASSWORD -MAXUSERS USERS
-STARTMODE AUTO -PFILE ORACLE_HOME\DATABASE\INITSID.ORA
This syntax includes thefollowing variables:
Variable |
Description |
SID |
The same SID name as the SID of the database you are upgrading. |
PASSWORD |
The password for the new Oracle Database 11g Release 2 (11.2) database instance. This is the password for the user connected with If the default Oracle Database 11g Release 2 (11.2) security settings are in place, then passwords must be at least eight characters, and passwords such as |
USERS |
The maximum number of users who can be granted |
ORACLE_HOME |
The Oracle Database 11g Release 2 (11.2) Oracle home directory. Ensure that you specify the full path name with the |
C:\> ORADIM-NEW -SID ORCL -SYSPWD TWxy5791 -MAXUSERS 10
-STARTMODE AUTO-PFILE C:\ORACLE\PRODUCT\11.2.0\DB\DATABASE\INITORCL.ORA
ORADIM writes a log file tothe ORACLE_HOME\database directory.
3. If your operatingsystem is Linux or UNIX, then perform the following checks:
(1)Your ORACLE_SID is set correctly
(2)The oratab file points toyour Oracle Database 11g Release 2 (11.2) Oracle home
(3)The following environment variablespoint to the Oracle Database 11g Release 2 (11.2) directories:
(4)Any scripts that clients use to setthe ORACLE_HOME value must point to the new Oracle home.
5.At a system prompt, change tothe ORACLE_HOME/rdbms/admin directory.
7.Connect to the database instance as auser with SYSDBA privileges.
8.Start the instanceby issuing the following command:
ORA-00401: thevalue for parameter compatible is not supported by this release
The COMPATIBLE initializationparameter is set to a value less than 10.0.0.
ORA-39701:database must be mounted EXCLUSIVE for UPGRADE or DOWNGRADE
The CLUSTER_DATABASE initializationparameter is set to TRUE instead of FALSE.
ORA-39700:database must be opened with UPGRADE option
The STARTUP command was issuedwithout the UPGRADE keyword.
ORA-00336: logfile size xxxx blocks is less than minimum 8192 blocks
A redo log file size is less than 4 MB:
The SYSAUX tablespace must becreated with the following mandatory attributes:
(5) SEGMENT SPACE MANAGEMENT AUTO
Table 3-4 Guidelines for Sizing the SYSAUXTablespace
Factor |
Small |
Medium |
Large |
Number of CPUs |
2 |
8 |
32 |
Number of concurrently active sessions |
5 |
20 |
100 |
Number of user objects (tables and indexes) |
500 |
5,000 |
50,000 |
Estimated SYSAUX size at steady state with default configuration |
500 MB |
2 GB |
5 GB |
The followingSQL statement would create a 500 MB SYSAUX tablespace for thedatabase:
SQL> CREATE TABLESPACE sysaux DATAFILE'sysaux01.dbf'
10. Set the system to spool results to alog file for later verification of success:
11.Run the Pre-Upgrade Information Tool byexecuting the utlu112i.sql script:
SQL> @?/rdbms/admin/utlu112i.sql
12. Run the catupgrd.sql script:
SQL> @?/rdbms/admin/catupgrd.sql
这个脚本才是真正的升级脚本,前面搞了那么多,就为了执行这个脚本。
还有一点要注意,就是执行这个脚本会产生大量的归档文件, 平均3分钟产生40M的归档。
该脚本运行了80分钟。 而在Oracle10g下,运行该脚本在40分钟左右。时间增加了一倍。增加了升级系统的宕机时间。
ORA-00942: tableor view does not exist
ORA-00904:"TZ_VERSION": invalid identifier
(1) Oracle Database Catalog Views
(2) Oracle Database Packages andTypes
(3) JServer JAVA Virtual Machine
(4) Oracle Database Java Packages
(6) Oracle Real ApplicationClusters
(20) Oracle Enterprise Manager Repository
(22) Oracle Application Express
13. Restart the instance to reinitializethe system parameters for normal operation.
Catupgrd.sql 脚本里会执行shutdown命令。
Run utlu112s.sql todisplay the results of the upgrade as follows:
SQL> @?/rdbms/admin/utlu112s.sql
SQL>@?/rdbms/admin/utlu112s.sql
.Oracle Database11.2 Post-Upgrade Status Tool 09-29-2011 12:05:19
.Component Current Version Elapsed Time
.Oracle Server VALID 11.2.0.3.0 00:44:22
JServer JAVAVirtual Machine VALID 11.2.0.3.0 00:00:00
Oracle WorkspaceManager VALID 11.2.0.3.0 00:02:07
OLAP AnalyticWorkspace VALID 11.2.0.3.0 00:00:00
OLAP Catalog VALID 11.2.0.3.0 00:00:00
Oracle OLAP API VALID 11.2.0.3.0 00:01:45
OracleEnterprise Manager VALID 11.2.0.3.0 00:00:00
Oracle XDK VALID 11.2.0.3.0 00:00:00
Oracle Text VALID 11.2.0.3.0 00:00:00
Oracle XMLDatabase VALID 11.2.0.3.0 00:00:00
Oracle DatabaseJava Packages VALID 11.2.0.3.0 00:00:00
OracleMultimedia VALID 11.2.0.3.0 00:10:50
Spatial VALID 11.2.0.3.0 00:17:19
OracleExpression Filter VALID 11.2.0.3.0 00:00:48
Oracle RulesManager VALID 11.2.0.3.0 00:00:46
OracleApplication Express VALID 3.2.1.00.10
PL/SQL proceduresuccessfully completed.
该脚本会显示升级各个组件所花的时间,这里显示我们升级组件花了85分钟。
SQL> @?/rdbms/admin/catuppst.sql
This may generate thefollowing informational messages:
Generating apply and rollback scripts…
Check the following file for errors:
Check the following log file for errors:
Generating apply and rollback scripts…
Check the following file for errors:
…/cfgtoollogs/catbundle/catbundle_PSU_*.log
…/rdbms/admin/catbundle_PSU_*_APPLY.sql
…/rdbms/admin/catbundle_PSU_*_ROLLBACK.sql
Check the following log file for errors:
…/cfgtoollogs/catbundle/catbundle_PSU_*.log
16. Run utlrp.sql to recompile any remaining stored PL/SQL and Java code.
Verify that all expectedpackages and classes are valid:
SQL> SELECTcount(*) FROM dba_invalid_objects;
SQL> SELECTdistinct object_name FROM dba_invalid_objects;
$ srvctl upgradedatabase -d db-unique-name -o oraclehome
如果dbca 显示OEM 已经配置过,rm 掉如下2个目录,再次运行就ok了。
ORACLE_HOME/oc4j/j2ee/OC4J_DBConsole_hostname_dbname
如果在升级过程中遇到问题,可以重新执行升级脚本,步骤如下:
1.Shut down the database as follows:
2.Restart the databasein UPGRADE mode:
3.Set the system to spool results to a logfile for later verification of success:
SQL> SELECT COMP_NAME, VERSION, STATUSFROM SYS.DBA_REGISTRY;
———————————————————————- ———————-
Oracle Application Express 3.2.1.00.10 VALID
Oracle Enterprise Manager 11.2.0.3.0 VALID
Oracle Multimedia 11.2.0.3.0 VALID
Oracle XML Database 11.2.0.3.0 VALID
Oracle Expression Filter 11.2.0.3.0 VALID
Oracle Rules Manager 11.2.0.3.0 VALID
Oracle Workspace Manager 11.2.0.3.0 VALID
———————————————————————- ———————-
Oracle Database Catalog Views 11.2.0.3.0 VALID
Oracle Database Packages and Types 11.2.0.3.0 VALID
JServer JAVA Virtual Machine 11.2.0.3.0 VALID
Oracle Database Java Packages 11.2.0.3.0 VALID
OLAP Analytic Workspace 11.2.0.3.0 VALID
Oracle OLAP API 11.2.0.3.0 VALID
小结:
hi_shared_memory_address integer 0
memory_max_target big integer 1000M
memory_target big integer 1000M
shared_memory_address integer 0
java_max_sessionspace_size integer 0
java_soft_sessionspace_limit integer 0
Buffer Cache Size 318767104 Yes
Shared Pool Size 276824064 Yes
Shared IO Pool Size 33554432 Yes
Maximum SGA Size 1043886080 No
Startup overhead in Shared Pool 71970864 No
Free SGA Memory Available 364904448
脚本120分钟,备份1个小时,然后冗余1-2小时,申请停机的时间至少需要4个小时,系统耗不起啊。
不过朋友说增加Java_Pool 可以减少运行脚本的时间,这块还没有测试,有朋友测试的话可以试试这种方法。
Oracle 11g升级至11.2.0.3相关推荐
- oracle asmb关闭,[Oracle 11g r2(11.2.0.4.0)]集群守护进程CSS资源管理
[Oracle 11g r2(11.2.0.4.0)]集群守护进程CSS资源管理 2018-07-25 11:43:31Oracle 首先看一下11gr2 各个进程关系: 之前谈到的css功能可以统称 ...
- [Oracle 11g r2(11.2.0.4.0)]集群守护进程CSS资源管理
首先看一下11gr2 各个进程关系: 之前谈到的css功能可以统称为节点管理( Node Management)功能.接下来继续讨论css 的另一个重要的组成部分一一组管理(Grocl < IG ...
- Oracle Linux 6 3下安装Oracle 11g R2 11 2 0 3
分享一下我老师大神的人工智能教程.零基础!通俗易懂!风趣幽默!还带黄段子!希望你也加入到我们人工智能的队伍中来!https://blog.csdn.net/jiangjunshow 本文主要描述了在O ...
- [Oracle 11g r2(11.2.0.4.0)]RAC集群常用命令
文章摘自于 http://blog.csdn.net/tianlesoftware/article/details/5358573. Oracle Clusterware的命令集可以分为以下4种: 节 ...
- [Oracle 11g r2(11.2.0.4.0)]集群守护进程gpnp介绍
首先来看下oracle11g r2进程关系: gpnp 全称为grid plug and play,是Oracle 11 gR2 版本集群管理软件新增的组件.该组件的功能由即npd.bin 守护进程实 ...
- 32位系统安装oracle11g,windows系统下 32位 安装Oracle 11g R2(11.2.0.1.0)图文安装教程
安装Oracle 11g R2 For Windows 1.下载Oracle 11g R2 for Windows版本,下载地址如下 官方网站: http://www.doczj.com/doc/73 ...
- oracle tfa,Oracle数据库11G RAC 11.2.0.4 GI单独安装tfa
天萃荷净 11.2.0.4 GI单独安装tfa 在11.2.0.4安装rac执行root.sh之时需要在root的环境变量中指定可以直接执行unzip命令(在非Linux,Win环境下root用户默认 ...
- Oracle Golden Gate 11.2.0.3安装详解
Oracle Golden Gate 11.2.0.3安装详解 环境 环境变量 安装OGG软件 开始OGG配置 配置源端数据库 源端OGG配置 配置目标端数据库 目标端OGG配置 开启同步 环境 ce ...
- oracle11客户端 oui.exe已停止工作,Windows Oracle 打patch(11.2.0.4)错误OUI-67073
Windows Oracle 打patch(11.2.0.4) 1.安装Oracle 11.2.0.4选择仅安装软件 2.更新OPatch包 解压p6880880_112000_MSWIN-x86-6 ...
最新文章
- 每天一个linux命令(41):ps命令
- C语言 字符串转换成int、long和double型
- python 中的路径. ./ .. ../和相对路径的写法
- jsplumb拖线_基于jsplumb插件制作可拖拽、保存流程图、重绘保存后的流程图总结...
- Python学习 - 之super函数
- SPOOLing假脱机技术详细介绍
- Ethercat解析(一)之获取、编译、安装(Ubuntu14.04)
- iPad上的Cookie到底有多长?
- java求出遍历二叉树的路径,102. 二叉树的层序遍历
- 一套不错的php,一套不错的PHP笔试题-附答案.pdf
- [C#] .NET4.0中使用4.5中的 async/await 功能实现异步
- 程序员代码面试指南 IT名企算法与数据结构题目最优解
- 2022新版完整版青龙面板对接机器人,傻妞对接onebot(oicq)协议实现机器人功能
- 人肉搜索酝酿灰色产业:首批淘客月入万元
- uniapp自定义搜索组件实现全部功能
- linux重启搜狗输入法命令
- 【C/C++】在Dos下(Dosbox)编写C/C++程序
- oSIP协议栈(及eXoSIP、Ortp等)使用入门
- SEO搜索引擎优化相关
- 名帖335 智永 草书《真草千字文》
热门文章
- 其实很寂寞,只是不想说:伤感QQ空间日志
- 视频转码打包工具—“FilmLight Daylight”
- DL之IDE:深度学习环境安装之CUDA的简介(显卡GPU/驱动/CUDA间的关系)、安装(根据本地电脑的NVIDIA显卡驱动版本去正确匹配CUDA版本)之详细攻略
- nginx+nginx-http-flv-module+ffmpeg/obs实现点播+直播
- 04 -描述统计学- Lesson6 电子表格4_可视化数据
- 【KDD20】鲁棒的跨语言知识图谱实体对齐
- 论文的技术路线流程图如何绘制?
- templateclass T
- 苹果电脑M1可以用mysql吗_千万不要试图在macbook m1上安装SQL server
- mysql查询的长度限制_SQL查询的长度的实际限制(特别是MySQL)