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    云数据库 OceanBase：源端 Oracle 数据库的最小化权限

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    云数据库 OceanBase：源端 Oracle 数据库的最小化权限

    更新时间：Oct 16, 2024

    本文为您介绍以 Oracle 数据库作为源端时，数据迁移各阶段需要的最小化权限。

    创建数据源

    GRANT ALTER SESSION to oms_user;
GRANT CREATE SESSION to oms_user;
GRANT CONNECT to oms_user;

GRANT SELECT on DUAL to oms_user;
GRANT SELECT on NLS_DATABASE_PARAMETERS to oms_user;
GRANT SELECT on PRODUCT_COMPONENT_VERSION to oms_user;
GRANT SELECT on V_$DATABASE to oms_user;
GRANT SELECT ANY DICTIONARY to oms_user;

    结构迁移

    GRANT ALTER SESSION to oms_user;
GRANT CREATE SESSION to oms_user;
GRANT CONNECT to oms_user;

-- 待迁移的所有表的 SELECT 权限
GRANT SELECT on any-replicated-table to oms_user;

    全量迁移

    GRANT ALTER SESSION to oms_user;
GRANT CREATE SESSION to oms_user;
GRANT CONNECT to oms_user;

GRANT SELECT on DBA_CONSTRAINTS to oms_user;
GRANT SELECT on DBA_CONS_COLUMNS to oms_user;
GRANT SELECT on DBA_EXTENTS to oms_user;
GRANT SELECT on DBA_INDEXES to oms_user;
GRANT SELECT on DBA_IND_COLUMNS to oms_user;
GRANT SELECT on DBA_MVIEWS to oms_user;
GRANT SELECT on DBA_MVIEW_LOGS to oms_user;
GRANT SELECT on DBA_OBJECTS to oms_user;
GRANT SELECT on DBA_PART_KEY_COLUMNS to oms_user;
GRANT SELECT on DBA_SUBPART_KEY_COLUMNS to oms_user;
GRANT SELECT on DBA_TABLES to oms_user;
GRANT SELECT on DBA_TAB_COLS to oms_user;
GRANT SELECT on DBA_TAB_COLUMNS to oms_user;
GRANT SELECT on DBA_TAB_PARTITIONS to oms_user;
GRANT SELECT on DBA_TAB_SUBPARTITIONS to oms_user;
GRANT SELECT on DBA_USERS to oms_user;
GRANT SELECT on NLS_DATABASE_PARAMETERS to oms_user;
GRANT SELECT on SYS.SMON_SCN_TIME to oms_user;
GRANT SELECT on V_$INSTANCE to oms_user;
GRANT SELECT on V_$NLS_PARAMETERS to oms_user;

-- 待迁移的所有表的 SELECT 权限
GRANT SELECT on any-replicated-table to oms_user;

    增量同步

    GRANT ALTER SESSION to oms_user;
GRANT CREATE SESSION to oms_user;
GRANT CONNECT to oms_user;

GRANT SELECT on ALL_CONSTRAINTS to oms_user;
GRANT SELECT on ALL_INDEXES to oms_user;
GRANT SELECT on ALL_IND_COLUMNS to oms_user;
-- 查询对象的一些属性信息
GRANT SELECT on ALL_OBJECTS to oms_user; 
GRANT SELECT on ALL_TAB_COLS to oms_user;
-- 查询黑白名单用户
GRANT SELECT on ALL_USERS to oms_user; 
GRANT SELECT on DBA_CONSTRAINTS to oms_user;
GRANT SELECT on DBA_CONS_COLUMNS to oms_user;
GRANT SELECT on DBA_MVIEWS to oms_user;
-- 查询 all_objects 需要排除掉物化视图
GRANT SELECT on DBA_MVIEW_LOGS to oms_user; 
-- 查询数据库当前时间，数据库时区
GRANT SELECT on DUAL to oms_user; 
-- 查询 RAC 有几个节点
GRANT SELECT on GV_$INSTANCE to oms_user; 
-- 查询数据库字符集
GRANT SELECT on NLS_DATABASE_PARAMETERS to oms_user; 
GRANT SELECT on SYS.CDEF$ to oms_user;
GRANT SELECT on SYS.COL$ to oms_user;
GRANT SELECT on SYS.CON$ to oms_user;
GRANT SELECT on SYS.ICOL$ to oms_user;
GRANT SELECT on SYS.OBJ$ to oms_user;
-- 查询黑名单用户的 USER#，据此过滤黑名单用户的表
GRANT SELECT on SYS.USER$ to oms_user; 
-- 查询归档文件
GRANT SELECT on V_$ARCHIVED_LOG to oms_user; 
GRANT SELECT on V_$ARCHIVE_DEST to oms_user;
-- 查询是否开启补充日志，Oracle 打开方式等
GRANT SELECT on V_$DATABASE to oms_user; 
GRANT SELECT on V_$LOG to oms_user;
-- 查询在线日志
GRANT SELECT on V_$LOGFILE to oms_user; 
-- 查询 logminer 返回的结果集
GRANT SELECT on V_$LOGMNR_CONTENTS to oms_user;
GRANT SELECT on V_$PARAMETER to oms_user;

GRANT EXECUTE on SYS.DBMS_LOGMNR to oms_user;

-- 待迁移的所有表的 SELECT 权限。如果在增量迁移过程中有新增表也需要同步的话，也需要具备该表的 SELECT 权限
GRANT SELECT on any-replicated-table to oms_user;

-- 待迁移的所有表的 flashback 权限和 SELECT ANY TRANSACTION 的权限 （默认不使用 Flashback Query，此时无需该权限）
GRANT FLASHBACK on any-replicated-table to oms_user;
GRANT SELECT ANY TRANSACTION to oms_user;

-- 12c 及以上版本需要授予下述权限
GRANT LOGMINING TO oms_user;  
GRANT SELECT on DBA_PDBS to oms_user;

    如果存在以下情况，需要额外授予权限：

    • 如果是 Oracle 数据库 12C 及以上版本，增量同步时需要额外授予下述权限。

      GRANT LOGMINING TO oms_user;  
GRANT SELECT on DBA_PDBS to oms_user;

    • 如果增量同步时需要开启 Flashback Query（默认未开启），请额外授予下述权限。

      GRANT FLASHBACK on any-replicated-table to oms_user;
GRANT SELECT ANY TRANSACTION to oms_user;

    • 如果迁移源端为 12C/18C/19C 的可插拔数据库 Pluggable DataBase（PDB），拉取 PDB 的账号需要是 Common 用户。并且，授予的权限均需加上 CONTAINER=ALL。

      alter session set container=CDB$ROOT;
create user C##XXX identified by yyy;

      上述授权语句均需加上 CONTAINER=ALL，需要同步的业务表的授权除外。例如，GRANT ALTER SESSION to oms_user; 需要调整为 GRANT ALTER SESSION to C##XXX CONTAINER=ALL;。

    • 如果增量同步过程中，需要同步新增表的增量数据，请授予该新增表 SELECT 权限。

      如果创建数据迁移项目前，无法确定有哪些新增表，则需要授予 SELECT ANY TABLE 权限。

    正向切换

    GRANT ALTER SESSION to oms_user;
GRANT CREATE SESSION to oms_user;
GRANT CONNECT to oms_user;

GRANT SELECT on ALL_CONSTRAINTS to oms_user;
GRANT SELECT on ALL_CONS_COLUMNS to oms_user;
GRANT SELECT on ALL_IND_EXPRESSIONS to oms_user;
GRANT SELECT on ALL_LOBS to oms_user;
GRANT SELECT on ALL_MVIEWS to oms_user;
GRANT SELECT on ALL_MVIEW_LOGS to oms_user;
GRANT SELECT on ALL_TABLES to oms_user;
GRANT SELECT on ALL_TAB_COLUMNS to oms_user;
GRANT SELECT on ALL_TAB_PRIVS to oms_user;
GRANT SELECT on ALL_TYPES to oms_user;
GRANT SELECT on ALL_USERS to oms_user;
GRANT SELECT on ALL_VIEWS to oms_user;
GRANT SELECT on DUAL to oms_user;
GRANT SELECT on NLS_DATABASE_PARAMETERS to oms_user;
GRANT SELECT on PRODUCT_COMPONENT_VERSION to oms_user;
GRANT SELECT on USER_ROLE_PRIVS to oms_user;
GRANT SELECT on V_$DATABASE to oms_user;
GRANT SELECT on V_$PWFILE_USERS to oms_user;

    反向增量

    GRANT ALTER SESSION to oms_user;
GRANT CREATE SESSION to oms_user;
GRANT CONNECT to oms_user;

-- 创建内部事务表，以保证无主键表的数据质量
GRANT CREATE ANY TABLE to oms_user; 
-- 删除内部事务表，按分区删除更快
GRANT DROP ANY TABLE to oms_user; 
GRANT INSERT ANY TABLE to oms_user;
GRANT DELETE ANY TABLE to oms_user;
GRANT UPDATE ANY TABLE to oms_user;
GRANT UNLIMITED TABLESPACE to oms_user;

    如果需要反向同步 DDL，还需要授予相关 DDL 的权限。示例如下：

    GRANT ALTER ANY TABLE to oms_user;