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oracle+system空间满了,oracle审计导致system表空间爆满的处理方法

开发人员通过plsql登录或者操作数据库,提示如下错误:

ORA-00604: error occurred at recursive SQL level 1

ORA-01653: unable to extend table SYS.AUD$ by 8192 in tablespace SYSTEM

ORA-02002: error while writing to audit trail

ORA-00604: error occurred at recursive SQL level 1

ORA-01653: unable to extend table SYS.AUD$ by 8192 in tablespace SYSTEM

解决方法:

根据提示很明显是system空间无法扩展,审计记录无法写入,表面上是system表空间不足,其实不然,从错误信息可以看出,该环境审计功能是开启的,这种情况大多数都是由于审计信息太多,导致系统表空间紧张导致的,清空审计信息就可以解决,此处就是由于审计信息记录太大导致的,如果没有审计需求,可以关闭审计功能。以下是清理审计的方法:

先通过以下语句查出审计表占用的空间大小:

1234567891011121314151617181920212223242526272829303132333435363738

select

owner,

table_name,

sum

(decode(seg_type,

'table'

, size_mb))

"数据段大小"

,

sum

(decode(seg_type,

'index'

, size_mb))

"索引段大小"

,

sum

(decode(seg_type,

'lob'

, size_mb))

"大字段大小"

,

sum

(size_mb)

"表总大小"

from

(

---所有表大小

select

t.owner,

t.table_name,

sum

(s.bytes) / 1024 / 1024 size_mb,

'table'

seg_type

from

dba_segments s, dba_tables t

where

s.owner = t.owner

and

s.segment_name = t.table_name

group

by

t.owner, t.table_name

union

all

---大字段大小

select

l.owner,

l.table_name,

sum

(s.bytes) / 1024 / 1024 size_mb,

'lob'

seg_type

from

dba_segments s, dba_lobs l

where

s.owner = l.owner

and

s.segment_name = l.segment_name

group

by

l.owner, l.table_name

union

all

---索引段大小

select

i.table_owner,

i.table_name,

sum

(s.bytes) / 1024 / 1024 size_mb,

'index'

seg_type

from

dba_segments s, dba_indexes i

where

s.owner = i.owner

and

s.segment_name = i.index_name

group

by

i.table_owner, i.table_name)

where

owner =

'SYS'

and

table_name=

'AUD$'

group

by

owner, table_name;

根据查出的审计表的大小分段释放空间,如查出来大小10G

,分5段释放

,逐次将审计表中的数据清除,使之逐步释放空间,过程语句如下:

123456

TRUNCATE

TABLE

sys.aud$ reuse storage;

ALTER

TABLE

sys.aud$

deallocate

unused keep 10800M;

ALTER

TABLE

sys.aud$

deallocate

unused keep 6144M;

ALTER

TABLE

sys.aud$

deallocate

unused keep 4096M;

ALTER

TABLE

sys.aud$

deallocate

unused keep 2048M;

ALTER

TABLE

sys.aud$

deallocate

unused keep 0M;