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SQL> col OBJECT_NAME format a20
SQL> col 自由空间百分比(%) format 90.99 --格式化，把小数点对齐为两位
SQL> select name,
sgasize/1024/1024 "Allocated(M)",
bytes/1024 "自由空间(K)",
round(bytes/sgasize*100, 2) "自由空间百分比(%)"
from (select sum(bytes) sgasize from sys.v_$sgastat) s, sys.v_$sgastat f
where f.name = 'free memory';
NAME Allocated(M) 自由空间(K) 自由空间百分比(%)
-------------------------- ------------ ----------- -----------------
free memory 54.4491119 11619.457 20.84
free memory 54.4491119 600 1.08
free memory 54.4491119 17788 31.90
以下为查看sys.v_$sgastat相关
SQL> desc sys.v_$sgastat
名称 空? 类型
----------------------------------------- -------- ---------------------
POOL VARCHAR2(11)
NAME VARCHAR2(26)
BYTES NUMBER
SQL> select sum(bytes) sgasize from sys.v_$sgastat; --SGA区总和
SGASIZE
----------
57094032
SQL> select * from sys.v_$sgastat;
POOL NAME BYTES
----------- -------------------------- ----------
fixed_sga 70924
db_block_buffers 16777216
log_buffer 66560
shared pool free memory 11935052
shared pool miscellaneous 566128
shared pool PLS non-lib hp 2096
shared pool State objects 134572
shared pool KGFF heap 6552
shared pool character set object 58936
shared pool KGK heap 17568
shared pool db_files 370988
POOL NAME BYTES
----------- -------------------------- ----------
shared pool joxlod: in phe 4144
shared pool KQLS heap 430828
shared pool table columns 18400
shared pool fixed allocation callback 320
shared pool PL/SQL DIANA 371572
shared pool enqueue_resources 96768
shared pool PL/SQL MPCODE 61832
shared pool trigger inform 520
shared pool transactions 66900
shared pool trigger defini 1392
shared pool distributed_transactions- 180152
POOL NAME BYTES
----------- -------------------------- ----------
shared pool VIRTUAL CIRCUITS 112260
shared pool view columns d 1072
shared pool SYSTEM PARAMETERS 61336
shared pool dictionary cache 296356
shared pool message pool freequeue 231152
shared pool joxlod: in ehe 52712
shared pool character set memory 135888
shared pool db_block_buffers 278528
shared pool library cache 1132868
shared pool Checkpoint queue 73764
shared pool sql area 933812
POOL NAME BYTES
----------- -------------------------- ----------
shared pool processes 47200
shared pool sessions 147108
shared pool joxs heap init 896
shared pool transaction_branches 368000
shared pool event statistics per sess 231840
shared pool db_block_hash_buckets 98328
shared pool file # translation table 65572
large pool free memory 614400
java pool free memory 18214912
java pool memory in use 2756608
已选择43行。
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