DB File/Tablespace Size Monitor

查看每個File的使用率
SELECT T.TABLESPACE_NAME,D.FILE_NAME,D.AUTOEXTENSIBLE,D.BYTES/1024/1024/1024 as USED_G,D.MAXBYTES/1024/1024/1024 AS MAX_G,D.STATUS,(d.bytes/d.maxbytes)*100 AS UseRate
FROM DBA_TABLESPACES T,DBA_DATA_FILES D
WHERE T. TABLESPACE_NAME =D. TABLESPACE_NAME and d.maxbytes!=0 ORDER BY UseRate desc

查看Tablespace的平均使用率及剩餘空間
select t.tablespace_name ,avg(d.bytes/d.maxbytes)*100 as Used_Rate,sum(d.maxbytes)/1024/1024/1024 as max_g,sum(d.bytes)/1024/1024/1024 as Used_g,
       (sum(d.maxbytes)-sum(d.bytes))/1024/1024/1024 as free_space_g
FROM DBA_TABLESPACES T,DBA_DATA_FILES D
WHERE T. TABLESPACE_NAME =D. TABLESPACE_NAME and d.maxbytes!=0 group by t.tablespace_name
ORDER BY Free_space_g

DB常用指令

Create Function:

CREATE INDEX DWPIA.IDX_SAP_STB_MTIDX ON DWPIA.SAP_STB
(MTIDX, RDATE)
LOGGING
TABLESPACE DWC5_IDX
NOPARALLEL online;

CREATE TABLESPACE C5_SYS_DATA DATAFILE '+DBDATA/c5tasm/datafile/C5_SYS_DATA.dbf' SIZE 5M AUTOEXTEND ON NEXT 5M MAXSIZE UNLIMITED;

CREATE USER C5TST3 IDENTIFIED BY C5TST3 ACCOUNT UNLOCK;

Drop Function:

DROP TABLESPACE tspace INCLUDING CONTENTS AND DATAFILES;

Grant Function:

GRANT RESOURCE TO C5TST3;
GRANT CREATE SESSION TO C5TST3

Oracle ASM To File File:：DBMS_FILE_TRANSFER

Oracle ASM To File File:：DBMS_FILE_TRANSFER
建立Directory：
SQL> create directory souredir as '+DBDATA/c5tasm/datafile';
SQL> create directory destdir as '/orasys';
Directory created

確認directories:
SQL>select * from dba_directories;

確認File的Status:
SQL>select file_name, file_id, online_status from dba_data_files order by File_id;

Tablespace C5OPI Offline:
SQL> alter tablespace C5OPI offline;
Tablespace altered.

做資料轉換：
SQL>begin
  dbms_file_transfer.copy_file(source_directory_object => 'destdir',
                               source_file_name => 'C5OPI_DATA_01.DBF',
                               destination_directory_object =>'souredir',
                               destination_file_name => 'C5OPI_DATA_01.DBF');
end;
/

把位置rename一下：
SQL> alter database rename file '/orasys/C5OPI_DATA_01.DBF' to  '+DBDATA/c5tasm/datafile/c5opi_data_01.dbf';
Database altered.

Recover datafile:
SQL> alter database recover datafile 6;

把Tablespace轉Online:
SQL> alter tablespace c5opi online;

確認最後狀況：
SQL>select file_name, file_id, online_status from dba_data_files;


Reference:
11gr2轉換:透過ASMCMD
DBMS_FILE_TRANSFER包方法
RMAN轉換
http://blog.itpub.net/17203031/viewspace-1065094/
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