数据库版本:Oracle11.2.0.4
架构:2节点RAC、单实例DG
问题描述:在RAC节点新增视图,可进行正常查询;但是在DG库查询视图是报错:
查询DG状态是正常的,但是执行SQL的时候报出ORA-06512
SQL>
SQL> select count(*) from prod.VIEW_BI;
select count(*) from prod.VIEW_BI
*
ERROR at line 1:
ORA-01157: cannot identify/lock data file 201 - see DBWR trace file
ORA-01110: data file 201: '+DATA'
ORA-06512: at "WMSYS.WM_CONCAT_IMPL", line 31
分析问题:
主库信息:
SYS@orcl1>select FILE_ID,FILE_NAME from dba_data_files;
FILE_ID共计41
SYS@orcl1> show parameter convert
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_file_name_convert string /u01/app/oracle/oradata/orcl/,+DATA/orcl/datafile/
log_file_name_convert string /u01/app/oracle/archivelog/, +FRA/orcl/onlinelog/, /u01/app/oracle/archivelog/, +DATA/orcl/onlinelog/
SYS@orcl1> select * from v$controlfile;
STATUS NAME IS_ BLOCK_SIZE FILE_SIZE_BLKS
------- ---------------------------------------------------------------------- --- ---------- --------------
+DATA/orcl/controlfile/current.258.1038497671 NO 16384 2330
+FRA/orcl/controlfile/current.256.1038497671 YES 16384 2330
SYS@orcl1> select name from v$tempfile;
NAME
----------------------------------------------------------------------
+DATA/orcl/tempfile/temp.264.1038497679
+DATA/orcl/tempfile/temp_interface01.dbf
备库信息:
SYS@orcl1> select name from v$tempfile;
NAME
----------------------------------------------------------------------
+DATA
+DATA/orcl/tempfile/temp.264.1038497679
+DATA/orcl/tempfile/temp_interface01.dbf
备库在执行SELECT查询的时候,排序会占用临时表空间,所以报出ORA-01157 ORA-01110 ORA-06512
处理方式:
对Oracle RAC、DG新增控制文件、临时表空间数据文件的目录转换关系
SYS@orcl1> alter system set db_file_name_convert='/u01/app/oracle/oradata/orcl/','+DATA/orcl/datafile/','/u01/app/oracle/oradata/orcl/','+FRA/orcl/onlinelog/','+DATA/orcl/tempfile/','/u01/app/oracle/oradata/orcl/' scope=spfile;
System altered.
而在RAC两个节点修改db_file_name_convert参数之后,需要重启数据库,否则如果采用依次重启实例的话,两个节点参数不一致,实例不能启动。
!!!!线上环境,不能重启主库,如何处理?
只在备库操作:
1、修改db_file_name_convert
SYS@orcldg> alter system set db_file_name_convert='/u01/app/oracle/oradata/orcl/','+DATA/orcl/datafile/','/u01/app/oracle/oradata/orcl/','+FRA/orcl/onlinelog/','+DATA/orcl/tempfile/','/u01/app/oracle/oradata/orcl/' scope=spfile;
System altered.
重启备库,使得参数生效 。
2、备库为read only,不能新增表空间,可以在原数据库临时表空间基础上,新增数据文件
ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/orcl/tempfile/temp1.dbf' size 1g autoextend on ;
SQL>
SQL> select count(*) from prod.VIEW_BI;
SQL> 20200321