12c RAC擴容undo表空間
阿新 • • 發佈：2018-01-18
tables auto rac dot xtend 擴展 ace create table Oracle 12cR1 RAC
col sid for a10 col name for a20 col value for a20 select sid,name,value from v$spparameter where name=‘undo_tablespace‘; SID NAME VALUE ---------- ------------------------------ -------------------- orcl2 undo_tablespace UNDOTBS2 orcl1 undo_tablespace UNDOTBS1 SYS@orcl1> show parameter create_file NAME TYPE VALUE ------------------------------------ ---------------------- ------------------------------ db_create_file_dest string +DATADG SYS@orcl1> SYS@orcl1> show parameter undo NAME TYPE VALUE ------------------------------------ ---------------------- ------------------------------ temp_undo_enabled boolean FALSE undo_management string AUTO undo_retention integer 900 undo_tablespace string UNDOTBS1 --不自動擴展，沒有最大值 SYS@orcl1> alter tablespace undotbs1 add datafile size 10m; SYS@orcl1> alter tablespace undotbs2 add datafile size 20m; --擴容到30m SYS@orcl1> alter database datafile ‘+DATADG/ORCL/DATAFILE/undotbs2.273.964970069‘ resize 30m; --自動擴展，最大100M SYS@orcl1> alter database datafile ‘+DATADG/ORCL/DATAFILE/undotbs2.273.964970069‘ autoextend on maxsize 100m; col file_name for a50 set lines 200 select file_name,bytes/1024/1024 mb,maxbytes/1024/1024 max_mb from dba_data_files where tablespace_name like ‘UNDOTBS%‘; FILE_NAME MB MAX_MB ---------------------------------------------------------------------------- ------------- ---------- +DATADG/ORCL/DATAFILE/undotbs1.261.964970069 155 32767.9844 +DATADG/ORCL/DATAFILE/undotbs2.273.964970069 30 100 +DATADG/ORCL/DATAFILE/undotbs1.367.965681119 10 0 +DATADG/ORCL/DATAFILE/undotbs2.369.965681285 20 0
12c RAC擴容undo表空間