本文介绍使用DTS迁移自建Oracle的数据至PolarDB-O集群。
前提条件
费用说明
仅在增量数据迁移正常运行期间计费(包含增量数据迁移暂停期间),详情请参见产品定价。
注意事项
- DTS在执行全量数据迁移时将占用源库和目标库一定的读写资源,可能会导致数据库服务器负载上升。因此您需要在执行数据迁移前评估数据迁移对源库和目标库性能的影响,同时建议您在业务低峰期执行数据迁移。
- 如果您的自建Oracle版本为12c及以上,待迁移表的名称长度需不超过30个字节。
准备工作
登录待迁移的Oracle数据库,创建用于采集数据的账号并授权。
说明 如您已创建包含下述权限的账号,可跳过本步骤。
数据库 | 结构迁移 | 全量迁移 | 增量数据迁移 |
---|---|---|---|
自建Oracle数据库 | schema的owner权限 | schema的owner权限 | DBA |
PolarDB集群 | schema的owner权限 | schema的owner权限 | schema的owner权限 |
- 自建Oracle数据库请参见CREATE USER和GRANT。
- PolarDB集群请参见创建账号。
注意 如需执行增量数据迁移,且不允许授予DBA权限,您可以参照以下内容为数据库账号授予更精细化的权限。
create session; connect; resource; execute on sys.dbms_logmnr; select on v_$logmnr_contents; select on v_$log; select on v_$logfile; select on v_$archived_log; select on v_$logmnr_logs; select on v_$parameter; select on v_$database; select on all_objects; select on all_tab_cols; select on dba_registry; select any table; select any transaction; select on v_$active_instances; select on v_$instance; select on sys.USER$; select on SYS.OBJ$; select on SYS.COL$; select on SYS.IND$; select on SYS.ICOL$; select on SYS.CDEF$; select on SYS.CCOL$; select on SYS.TABPART$; select on SYS.TABSUBPART$; select on SYS.TABCOMPART$; select on gv_$listener_network;
#需要对PDB和CDB同时授权 #PDB权限: create session; connect; resource; select on all_objects; select on all_tab_cols; select on dba_registry; select any table; select any transaction; select on v_$log; select on v_$logfile; select on v_$archived_log; select on v_$parameter; select on v_$database; select on v_$active_instances; select on v_$instance; select on V_$PDBS; select on sys.USER$; select on SYS.OBJ$; select on SYS.COL$; select on SYS.IND$; select on SYS.ICOL$; select on SYS.CDEF$; select on SYS.CCOL$; select on SYS.TABPART$; select on SYS.TABSUBPART$; select on SYS.TABCOMPART$; #CDB权限: create session; LOGMINING; select on v_$logmnr_contents;
#本示例以名称为dtstest的数据库账号为例介绍授权命令 create user dtstest IDENTIFIED BY rdsdt_dtsacct; grant create session to dtstest; grant connect to dtstest; grant resource to dtstest; grant execute on sys.dbms_logmnr to dtstest; grant select on v_$logmnr_contents to dtstest; grant select on v_$log to dtstest; grant select on v_$logfile to dtstest; grant select on v_$archived_log to dtstest; grant select on v_$logmnr_logs to dtstest; grant select on v_$parameter to dtstest; grant select on v_$database to dtstest; grant select on all_objects to dtstest; grant select on all_tab_cols to dtstest; grant select on dba_registry to dtstest; grant select any table to dtstest; grant select any transaction to dtstest; grant select on v_$active_instances to dtstest; grant select on v_$instance to dtstest; grant select on sys.USER$ to dtstest; grant select on SYS.OBJ$ to dtstest; grant select on SYS.COL$ to dtstest; grant select on SYS.IND$ to dtstest; grant select on SYS.ICOL$ to dtstest; grant select on SYS.CDEF$ to dtstest; grant select on SYS.CCOL$ to dtstest; grant select on SYS.TABPART$ to dtstest; grant select on SYS.TABSUBPART$ to dtstest; grant select on SYS.TABCOMPART$ to dtstest; grant select on gv_$listener_network to dtstest;
#本示例以名称为dtstest的数据库账号为例介绍授权命令,需要对PDB和CDB同时授权 #PDB授权示例: create user dtstest IDENTIFIED BY rdsdt_dtsacct; grant create session to dtstest; grant connect to dtstest; grant resource to dtstest; grant select on all_objects to dtstest; grant select on all_tab_cols to dtstest; grant select on dba_registry to dtstest; grant select any table to dtstest; grant select any transaction to dtstest; -- v$log privileges grant select on v_$log to dtstest; -- v$logfile privileges grant select on v_$logfile to dtstest; -- v$archived_log privileges grant select on v_$archived_log to dtstest; -- v$parameter privileges grant select on v_$parameter to dtstest; -- v$database privileges grant select on v_$database to dtstest; -- v_$active_instances privileges grant select on v_$active_instances to dtstest; -- v_$instance privileges grant select on v_$instance to dtstest; -- V$PDBS privileges grant select on V_$PDBS to dtstest; grant select on sys.USER$ to dtstest; grant select on SYS.OBJ$ to dtstest; grant select on SYS.COL$ to dtstest; grant select on SYS.IND$ to dtstest; grant select on SYS.ICOL$ to dtstest; grant select on SYS.CDEF$ to dtstest; grant select on SYS.CCOL$ to dtstest; grant select on SYS.TABPART$ to dtstest; grant select on SYS.TABSUBPART$ to dtstest; grant select on SYS.TABCOMPART$ to dtstest; #CDB授权示例: create user dtstest IDENTIFIED BY rdsdt_dtsacct; grant create session to dtstest; grant LOGMINING TO dtstest; -- v$logmnr_contents privileges grant select on v_$logmnr_contents to dtstest;
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