V8R3迁移V8R6
<h1>迁移工具(V8R6)</h1>
<ol>
<li>先在R6创建好与R3对应的用户、数据库、模式
<pre><code class="language-shell">创建用户
create user 用户名 password '密码';
授权
alter user 用户名 CREATEDB;
alter user 用户名 CREATEROLE;
alter user 用户名 LOGIN;
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA pg_catalog to 用户名; # 此SQL是针对迁移时报错“对pg_xxx表权限不够”，一般不需要执行。如果出现类似“对pg_xxx表权限不够”执行此SQL为用户授权重新迁移即可。
创数据库并关联用户
create database 库名 with owner=&quot;用户名&quot; encoding UTF8 template=template0 LC_CTYPE='zh_CN.UTF8' LC_COLLATE='zh_CN.UTF8';
创建模式
CREATE SCHEMA 模式名 AUTHORIZATION &quot;库名&quot;;</code></pre>
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<li>打开迁移工具，分别填写R3和R6需要迁移的库的相关信息
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3.新建迁移任务
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4.迁移结束，检查是否有报错信息
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<h1>命令行</h1>
<p>R3_R6迁移首选迁移工具，但无法用迁移工具直连数据库时只能用命令行迁移。</p>
<ul>
<li>先将R3库数据用命令导出，在本地用管理工具还原
<pre><code class="language-shell">./sys_dump -p 端口 -U 用户名 -f 数据文件保存路径.dmp -Fc -n 库名</code></pre>
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<li>再在本地将R3数据利用迁移工具将数据导成R6，再将本地R6数据导出上传到服务器用命令还原(同样需要提前创建好用户、库、模式)。本地迁成R6后检查注意检查表数、乱码、序列等，没问题就工具或命令行导出。
<pre><code class="language-shell">./sys_restore -p 端口 -U 用户名 -d 库名 --no-tablespaces -c --if-exists -O -x -j 4 /home/kingbase/数据文件存放路径.dmp</code></pre>
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