11g system表空间满了,请问是什么原因造成的

Question

数据库版本：11.2.0.2
系统：linux 5
问题描述：突然两三天system表空间满了从将近90%升到100%，表空间大小总共4G，平时每天表空间都只涨一点点。
alert日志信息：
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for IBM/AIX RISC System/6000: Version 11.2.0.2.0 - Production
TCP/IP NT Protocol Adapter for IBM/AIX RISC System/6000: Version 11.2.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for IBM/AIX RISC System/6000: Version 11.2.0.2.0 - Production
Time: 13-OCT-2012 16:24:09
Tracing not turned on.
Tns error struct:
ns main err code: 12535
TNS-12535: TNS:operation timed out
ns secondary err code: 12560
nt main err code: 505
TNS-00505: Operation timed out
nt secondary err code: 78
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=172.16.5.102)(PORT=38505))
Sat Oct 13 17:08:53 2012
ORA-1653: unable to extend table SYS.AUD$ by 8192 in tablespace SYSTEM
ORA-1653: unable to extend table SYS.AUD$ by 8192 in tablespace SYSTEM
system表空间除了aud$会增长，其他对象会增长吗？
帖子经 Vae编辑过

Answer 1

SEGMENT_NAME SEGMENT_TYPE BYTES
AUD$ TABLE 3385
IDL_UB1$ TABLE 232
SOURCE$ TABLE 62
IDL_UB2$ TABLE 29
C_OBJ#_INTCOL# CLUSTER 28
C_TOID_VERSION# CLUSTER 22
JAVA$MC$ TABLE 14
C_OBJ# CLUSTER 12
I_SOURCE1 INDEX 12
ARGUMENT$ TABLE 11
IDL_CHAR$SYS TABLE 10
SYS_LOB0000001051C00003$$ LOBSEGMENT 9
I_ARGUMENT1 INDEX 8
I_H_OBJ#_COL# INDEX 8
OBJ$ TABLE 8
DEPENDENCY$ TABLE 7
I_OBJ2 INDEX 7
I_OBJ5 INDEX 7
I_DEPENDENCY2 INDEX 6
VIEW$ TABLE 6