Oracle 表空间管理和优化

Oracle 表空间管理和优化 1. TOM大神的表查询和授权语句create or replace procedure SHOW_SPACE(P_SEGNAME IN VARCHAR2,

Oracle 表空间管理和优化

1. TOM大神的表查询和授权语句
create or replace procedure SHOW_SPACE(P_SEGNAME  IN VARCHAR2,
                                      P_OWNER    IN VARCHAR2 DEFAULT USER,
                                      P_TYPE      IN VARCHAR2 DEFAULT 'TABLE',
                                      P_PARTITION IN VARCHAR2 DEFAULT NULL)
-- THIS PROCEDURE USES AUTHID CURRENT USER SO IT CAN QUERY DBA_*
  -- VIEWS USING PRIVILEGES FROM A ROLE AND SO IT CAN BE INSTALLED
  -- ONCE PER DATABASE, INSTEAD OF ONCE PER USER WHO WANTED TO USE IT.
AUTHID CURRENT_USER AS
  L_FREE_BLKS          NUMBER;
  L_TOTAL_BLOCKS      NUMBER;
  L_TOTAL_BYTES        NUMBER;
  L_UNUSED_BLOCKS      NUMBER;
  L_UNUSED_BYTES      NUMBER;
  L_LASTUSEDEXTFILEID  NUMBER;
  L_LASTUSEDEXTBLOCKID NUMBER;
  L_LAST_USED_BLOCK    NUMBER;
  L_SEGMENT_SPACE_MGMT VARCHAR2(255);
  L_UNFORMATTED_BLOCKS NUMBER;
  L_UNFORMATTED_BYTES  NUMBER;
  L_FS1_BLOCKS        NUMBER;
  L_FS1_BYTES          NUMBER;
  L_FS2_BLOCKS        NUMBER;
  L_FS2_BYTES          NUMBER;
  L_FS3_BLOCKS        NUMBER;
  L_FS3_BYTES          NUMBER;
  L_FS4_BLOCKS        NUMBER;
  L_FS4_BYTES          NUMBER;
  L_FULL_BLOCKS        NUMBER;
  L_FULL_BYTES        NUMBER;
  -- INLINE PROCEDURE TO PRINT OUT NUMBERS NICELY FORMATTED
  -- WITH A SIMPLE LABEL.
  PROCEDURE P(P_LABEL IN VARCHAR2, P_NUM IN NUMBER) IS
  BEGIN
    DBMS_OUTPUT.PUT_LINE(RPAD(P_LABEL, 40, '.') ||
                        TO_CHAR(P_NUM, '999,999,999,999'));
  END;
BEGIN
  -- THIS QUERY IS EXECUTED DYNAMICALLY IN ORDER TO ALLOW THIS PROCEDURE
  -- TO BE CREATED BY A USER WHO HAS ACCESS TO DBA_SEGMENTS/TABLESPACES
  -- VIA A ROLE AS IS CUSTOMARY.
  -- NOTE: AT RUNTIME, THE INVOKER MUST HAVE ACCESS TO THESE TWO
  -- VIEWS!
  -- THIS QUERY DETERMINES IF THE OBJECT IS AN ASSM OBJECT OR NOT.
  BEGIN
    EXECUTE IMMEDIATE 'SELECT TS.SEGMENT_SPACE_MANAGEMENT
FROM DBA_SEGMENTS SEG, DBA_TABLESPACES TS
WHERE SEG.SEGMENT_NAME = :P_SEGNAME
AND (:P_PARTITION IS NULL OR
SEG.PARTITION_NAME = :P_PARTITION)
AND SEG.OWNER = :P_OWNER
AND SEG.TABLESPACE_NAME = TS.TABLESPACE_NAME'
      INTO L_SEGMENT_SPACE_MGMT
      USING P_SEGNAME, P_PARTITION, P_PARTITION, P_OWNER;
  EXCEPTION
    WHEN TOO_MANY_ROWS THEN
      DBMS_OUTPUT.PUT_LINE('THIS MUST BE A PARTITIONED TABLE, USE P_PARTITION => ');
      RETURN;
  END;
  -- IF THE OBJECT IS IN AN ASSM TABLESPACE, WE MUST USE THIS API
  -- CALL TO GET SPACE INFORMATION; ELSE WE USE THE FREE_BLOCKS
  -- API FOR THE USER MANAGED SEGMENTS.
  IF L_SEGMENT_SPACE_MGMT = 'AUTO' THEN
    DBMS_SPACE.SPACE_USAGE(P_OWNER,
                          P_SEGNAME,
                          P_TYPE,
                          L_UNFORMATTED_BLOCKS,
                          L_UNFORMATTED_BYTES,
                          L_FS1_BLOCKS,
                          L_FS1_BYTES,
                          L_FS2_BLOCKS,
                          L_FS2_BYTES,
                          L_FS3_BLOCKS,
                          L_FS3_BYTES,
                          L_FS4_BLOCKS,
                          L_FS4_BYTES,
                          L_FULL_BLOCKS,
                          L_FULL_BYTES,
                          P_PARTITION);
    P('UNFORMATTED BLOCKS ', L_UNFORMATTED_BLOCKS);
    P('FS1 BLOCKS (0-25) ', L_FS1_BLOCKS);
    P('FS2 BLOCKS (25-50) ', L_FS2_BLOCKS);
    P('FS3 BLOCKS (50-75) ', L_FS3_BLOCKS);
    P('FS4 BLOCKS (75-100)', L_FS4_BLOCKS);
    P('FULL BLOCKS ', L_FULL_BLOCKS);
  ELSE
    DBMS_SPACE.FREE_BLOCKS(SEGMENT_OWNER    => P_OWNER,
                          SEGMENT_NAME      => P_SEGNAME,
                          SEGMENT_TYPE      => P_TYPE,
                          FREELIST_GROUP_ID => 0,
                          FREE_BLKS        => L_FREE_BLKS);
    P('FREE BLOCKS', L_FREE_BLKS);
  END IF;
  -- AND THEN THE UNUSED SPACE API CALL TO GET THE REST OF THE
  -- INFORMATION.
  DBMS_SPACE.UNUSED_SPACE(SEGMENT_OWNER            => P_OWNER,
                          SEGMENT_NAME              => P_SEGNAME,
                          SEGMENT_TYPE              => P_TYPE,
                          PARTITION_NAME            => P_PARTITION,
                          TOTAL_BLOCKS              => L_TOTAL_BLOCKS,
                          TOTAL_BYTES              => L_TOTAL_BYTES,
                          UNUSED_BLOCKS            => L_UNUSED_BLOCKS,
                          UNUSED_BYTES              => L_UNUSED_BYTES,
                          LAST_USED_EXTENT_FILE_ID  => L_LASTUSEDEXTFILEID,
                          LAST_USED_EXTENT_BLOCK_ID => L_LASTUSEDEXTBLOCKID,
                          LAST_USED_BLOCK          => L_LAST_USED_BLOCK);
  P('TOTAL BLOCKS', L_TOTAL_BLOCKS);
  P('TOTAL BYTES', L_TOTAL_BYTES);
  P('TOTAL MBYTES', TRUNC(L_TOTAL_BYTES / 1024 / 1024));
  P('UNUSED BLOCKS', L_UNUSED_BLOCKS);
  P('UNUSED BYTES', L_UNUSED_BYTES);
  P('LAST USED EXT FILEID', L_LASTUSEDEXTFILEID);
  P('LAST USED EXT BLOCKID', L_LASTUSEDEXTBLOCKID);
  P('LAST USED BLOCK', L_LAST_USED_BLOCK);
END;
让普通用户能执行SYS.SHOW_SPACE
SYS@zcs11G>  drop user zcs1 CASCADE;
create user zcs identified by zcs;
grant connect,resource,dba to zcs;
grant execute on SYS.SHOW_SPACE TO zcs;
connect zcs/zcs
drop table t1 purge;
create table t1 (id int,name varchar2(19)) segment creation IMMEDIATE tablespace users;
set serverout on;
exec sys.show_space('T1');