使用shell脚本检查Oracle表空间使用率

需求：需要监控Oracle数据库表空间使用率和是否设置自动扩展，展示在监控平台上

脚本如下：

[oracle@racdb2:/home/oracle]$ cat tablespace.sh
#!/bin/bash

export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=/u01/app/oracle/product/19.3.0/db
export PATH=$ORACLE_HOME/bin:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH

sqlplus  -S / as sysdba <<EOF
set heading off
set pagesize 0
set feedback off
set linesize 200

spool /tmp/ora_tablespace.txt

SELECT aa.tablespace_name,
       round(aa.usd / bb.maxs * 100, 2) "USED%",
       round((bb.maxs - aa.usd) / 1024 / 1024 / 1024, 2) "FREE(G)",
       round(bb.maxs / 1024 / 1024 / 1024, 2) "MAX(G)",
       round(aa.usd / 1024 / 1024 / 1024, 2) "USED(G)"
  FROM (SELECT b.Tablespace_Name, (b.Bytes - NVL(a.Bytes, 0)) "USD"
          FROM (SELECT tablespace_name, SUM(bytes) bytes
                  FROM Dba_Free_Space
                 GROUP BY tablespace_name) a,
               (SELECT tablespace_name, SUM(bytes) bytes
                  FROM Dba_Data_Files
                 GROUP BY tablespace_name) b
         WHERE b.tablespace_name = a.tablespace_name(+)
        ) aa,
       (SELECT tablespace_name,
               SUM(CASE
                     WHEN maxbytes = 0 THEN
                      user_bytes
                     ELSE
                      maxbytes
                   END) "MAXS"
          FROM dba_data_files
         GROUP BY tablespace_name
         ORDER BY tablespace_name) bb
WHERE aa.tablespace_name = bb.tablespace_name
ORDER BY 5 DESC, 1;
spool off
set linesize 100
set pagesize 100
spool /tmp/ora_autex.txt
select tablespace_name,autoextensible from dba_data_files;
spool off
EOF

输出如下：

[oracle@racdb2:/home/oracle]$ sh tablespace.sh
I1_INDEX                            76.67      21.93         94      72.07
I1_DATA                             24.67     117.51        156      38.49
M1_INDEX                            40.04      19.19         32      12.81
SYSAUX                              27.04      23.35         32       8.65
M1_DATA                             18.27      26.16         32       5.84
x3dpasstokens                        3.22      30.97         32       1.03
SYSTEM                               2.98      31.05         32        .95
UNDOTBS1                             1.43      31.54         32        .46
UNDOTBS2                             1.33      31.58         32        .42
x3dnotif                              .85      31.73         32        .27
M1                                    .82      31.74         32        .26
x3dpassadmin                          .64      31.79         32        .21
V1_INDEX                              .05      31.98         32        .02
x3ddashadmin                          .06      31.98         32        .02
x3dswym                               .06      31.98         32        .02
V1_DATA                               .02      31.99         32        .01
x3dcomment                            .03      31.99         32        .01
x3dswym_widget                        .02      31.99         32        .01
USERS                                 .01         32         32          0
x3dswym_media                         .01         32         32          0
第一列是使用率，第二列是剩余多少GB，第三列是最大多少GB，第四列是使用多少GB


SYSTEM                         YES
SYSAUX                         YES
UNDOTBS2                       YES
USERS                          YES
x3dpassadmin                   YES
UNDOTBS1                       YES
x3dpasstokens                  YES
x3ddashadmin                   YES
M1                             YES
I1_DATA                        YES
I1_INDEX                       YES
M1_DATA                        YES
M1_INDEX                       YES
V1_DATA                        YES
V1_INDEX                       YES
x3dswym                        YES
x3dswym_media                  YES
x3dswym_widget                 YES
x3dcomment                     YES
x3dnotif                       YES
I1_INDEX                       NO
I1_DATA                        NO
I1_INDEX                       NO
I1_DATA                        NO
I1_DATA                        NO
I1_DATA                        NO

yes代表设置了自动扩展表空间

内容保存到两个文件里：

[oracle@racdb2:/home/oracle]$ ll /tmp/ora_*
-rw-r--r-- 1 oracle oinstall 2627 Jun  6 10:52 /tmp/ora_autex.txt
-rw-r--r-- 1 oracle oinstall 4020 Jun  6 10:52 /tmp/ora_tablespace.txt