通过分析oracle sysaux表空间下的各模块信息：

SELECT t.OCCUPANT_NAME,SUM(t.SPACE_USAGE_KBYTES)/1024/1024
 FROM gV$SYSAUX_OCCUPANTS t
 GROUP BY t.OCCUPANT_NAME
 ORDER BY 2 DESC;

上面就是oracle中占据sysaux表空间的各模块情况。

通过以下sql分析sysaux表空间的使用情况：

WITH
 ts_total_space AS (SELECT
                      TableSpace_name,
                      SUM(bytes) as bytes,
                      SUM(blocks) as blocks,
                      SUM(maxbytes) as maxbytes
                    FROM dba_data_files
                    GROUP BY TableSpace_name),
 ts_free_space AS (SELECT
                     ddf.TableSpace_name,
                     NVL(SUM(dfs.bytes),0) as bytes,
                     NVL(SUM(dfs.blocks),0) as blocks
                   FROM
                     dba_data_files ddf,
                     dba_free_space dfs
                   WHERE ddf.file_id = dfs.file_id(+)
                   GROUP BY ddf.TableSpace_name),
 ts_total_segments AS (SELECT
                         TableSpace_name,
                         SUM(bytes) as bytes,
                         SUM(blocks) as blocks
                       FROM dba_segments
                       GROUP BY TableSpace_name),
 ts_total_extents AS (SELECT
                        TableSpace_name,
                        SUM(bytes) as bytes,
                        SUM(blocks) as blocks
                      FROM dba_extents
                      GROUP BY TableSpace_name)
SELECT
 dt.TableSpace_name as "TSname",
 dt.status as "TSstatus",
 ROUND(ttsp.bytes/1024/1024,0) as "TSSizeMb",
 ROUND((ttsp.bytes-tfs.bytes)/1024/1024,0) as "TSUsedMb",
 ROUND(tfs.bytes/1024/1024,0) as "TSFreeMb",
 ROUND((ttsp.bytes-tfs.bytes)/ttsp.bytes*100,0) as "TSUsedPrct",
 ROUND(tfs.bytes/ttsp.bytes*100,0) as "TSFreePrct",
 ROUND(ttse.bytes/1024/1024,0) as "TSSegUsedMb",
 ROUND(tte.bytes/1024/1024,0) as "TSExtUsedMb",
 CASE
   WHEN ttsp.maxbytes = 0 THEN 'No' ELSE 'Yes'
 END as "AutoExtFile",
 CASE
   WHEN ttsp.maxbytes = 0 THEN '-' ELSE TO_CHAR(ROUND(ttsp.maxbytes/1024/1024,0))
 END as "TSMaxSizeMb",
 CASE
   WHEN ttsp.maxbytes = 0 THEN '-' ELSE TO_CHAR(ROUND((ttsp.bytes-tfs.bytes)/ttsp.maxbytes*100,0))
 END as "TSMaxUsedPrct",
 CASE
   WHEN ttsp.maxbytes = 0 THEN '-' ELSE TO_CHAR(ROUND((ttsp.maxbytes-(ttsp.bytes-tfs.bytes))/ttsp.maxbytes*100,0))
 END as "TSMaxFreePrct"
FROM
 dba_TableSpaces dt,
 ts_total_space ttsp,
 ts_free_space tfs,
 ts_total_segments ttse,
 ts_total_extents tte
WHERE dt.TableSpace_name = ttsp.TableSpace_name(+)
AND dt.TableSpace_name = tfs.TableSpace_name(+)
AND dt.TableSpace_name = ttse.TableSpace_name(+)
AND dt.TableSpace_name = tte.TableSpace_name(+)
AND dt.TableSpace_name = 'SYSAUX';

或者通过sql分析sysaux表空间下的各segments情况：

SELECT
 ROUND(SUM(ds.bytes)/1024/1024,0) as "SgmntSize",
 ds.TableSpace_name as "TSname",
 ds.owner as "SgmntOwner",
 ds.segment_name as "SgmntName",
 ds.segment_type as "SgmntType"
FROM dba_segments ds
WHERE ds.segment_type IN ('TABLE','INDEX','LOBSEGMENT')
AND TableSpace_name = 'SYSAUX'
GROUP BY
 ds.TableSpace_name,
 ds.owner,
 ds.segment_name,
 ds.segment_type
ORDER BY "SgmntSize" DESC;

发现有这张表：WRH$_SQL_PLAN也占据了此表空间很大的一部分，

分析metalink文章：Wrh$_sql_plan table growth causes Sysaux Tablespace size increase continuously [ID 1243058.1]

发现此乃oracle的一个bug，通过修补补丁patch 6394861

可以解决。