oracle kill process and buffer_cache

Oracle 进程与锁管理
本文介绍如何在 Oracle 数据库中管理进程和锁定情况,包括查询会话信息、杀死指定进程或 SQL 语句的方法,以及如何清除数据库缓存。
-----------------oracle kill process----------------------------start------------------------
select * from v$session;
select sid,serial# from v$session;


--kill那个进程
alter system kill session 'sid,serial#';


--如果某应用线上有6台,每台最大连接数有10个,则machine对应一台机器应该有10条记录
--kill那个sql(先查询 sql_id,sql_hash_value)
alter system kill session 'sid,serial#';


-- oracle数据库登录名/密码:sys/oracle ---


--sysdba清数据库缓存:
alter system flush buffer_cache;


-----------------oracle kill process----------------------------start------------------------




-----------------oracle lock -----------------------------end------------------------
SELECT p.spid,
       a.serial#,
       c.object_name,
       b.session_id,
       b.oracle_username,
       b.os_user_name
  FROM v$process p, v$session a, v$locked_object b, all_objects c
 WHERE p.addr = a.paddr
   AND a.process = b.process
   AND c.object_id = b.object_id;


   
-----------------oracle lock 情况----------------------------end------------------------



linux oracle服务器内存占用高,通过top发现都是oracle的进程,如何分析及处理。 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 94000 oracle 20 0 77.4g 9.6g 9.6g S 0.0 3.8 1:44.82 oracle_94000_to 78904 oracle 20 0 77.4g 9.4g 9.4g S 0.0 3.7 0:33.05 oracle_78904_to 105090 oracle 20 0 77.4g 8.6g 8.6g S 2.3 3.4 0:15.19 oracle_105090_t 105104 oracle 20 0 77.4g 7.9g 7.9g S 0.0 3.2 0:33.34 oracle_105104_t 105180 oracle 20 0 77.4g 7.6g 7.6g S 0.0 3.0 0:15.68 oracle_105180_t 145666 oracle 20 0 77.4g 7.4g 7.4g S 0.0 2.9 1:04.69 oracle_145666_t 97261 oracle 20 0 77.4g 6.9g 6.9g S 0.0 2.8 0:27.21 oracle_97261_to 53556 oracle 20 0 77.4g 6.9g 6.9g S 0.0 2.7 0:31.96 oracle_53556_to 53377 oracle 20 0 77.4g 6.8g 6.8g S 73.5 2.7 0:22.55 oracle_53377_to 152865 oracle 20 0 77.4g 6.8g 6.8g S 0.0 2.7 1:00.67 oracle_152865_t 1180 oracle 20 0 77.4g 6.6g 6.6g S 1.3 2.6 0:42.97 oracle_1180_top 1222 oracle 20 0 77.4g 6.6g 6.6g S 0.0 2.6 0:56.87 oracle_1222_top 53372 oracle 20 0 77.4g 6.3g 6.3g S 0.0 2.5 0:40.49 oracle_53372_to 105085 oracle 20 0 77.4g 6.3g 6.3g S 0.0 2.5 0:09.58 oracle_105085_t 105187 oracle 20 0 77.4g 6.0g 6.0g S 0.0 2.4 0:30.22 oracle_105187_t 105083 oracle 20 0 77.4g 5.7g 5.7g S 0.0 2.3 0:24.42 oracle_105083_t 53384 oracle 20 0 77.4g 5.7g 5.7g S 64.9 2.3 0:24.07 oracle_53384_to 105111 oracle 20 0 77.4g 5.6g 5.6g S 0.0 2.2 0:24.56 oracle_105111_t 105075 oracle 20 0 77.4g 5.6g 5.6g S 0.3 2.2 0:25.86 oracle_105075_t 53323 oracle 20 0 77.4g 5.3g 5.3g S 0.0 2.1 0:16.96 oracle_53323_to 105070 oracle 20 0 77.4g 5.2g 5.2g S 0.0 2.1 0:18.44 oracle_105070_t 105079 oracle 20 0 77.4g 4.9g 4.9g S 0.0 1.9 0:18.04 oracle_105079_t 105098 oracle 20 0 77.4g 4.8g 4.8g S 0.0 1.9 0:06.61 oracle_105098_t 105077 oracle 20 0 77.4g 4.8g 4.8g S 2.3 1.9 0:14.32 oracle_105077_t 105106 oracle 20 0 77.4g 4.7g 4.7g S 0.0 1.9 0:08.15 oracle_105106_t 105081 oracle 20 0 77.4g 4.6g 4.6g S 0.0 1.8 0:12.40 oracle_105081_t 105068 oracle 20 0 77.4g 4.3g 4.3g S 0.0 1.7 0:14.12 oracle_105068_t 3292 oracle 20 0 77.4g 4.2g 4.2g S 0.3 1.7 7:06.41 ora_dbw1_topprd 3298 oracle 20 0 77.4g 4.2g 4.2g S 0.0 1.7 6:58.30 ora_dbw2_topprd 3288 oracle 20 0 77.4g 4.0g 4.0g S 0.0 1.6 7:04.16 ora_dbw0_topprd 137170 oracle 20 0 77.4g 3.9g 3.9g S 0.0 1.5 0:04.14 oracle_137170_t 3254 oracle 20 0 77.4g 2.8g 2.8g S 0.0 1.1 0:12.17 ora_mman_topprd 3268 oracle 20 0 77.4g 2.1g 2.1g S 0.0 0.8 3:05.20 ora_dbrm_topprd 53325 oracle 20 0 77.4g 1.1g 1.1g S 0.0 0.4 0:23.76 oracle_53325_to 63393 oracle 20 0 77.4g 1.1g 1.1g S 0.0 0.4 0:15.74 ora_w00j_topprd 153706 oracle 20 0 77.4g 1.1g 1.1g S 0.0 0.4 0:14.09 ora_w006_topprd 165413 oracle 20 0 77.4g 1.1g 1.0g S 0.0 0.4 0:12.37 ora_w00a_topprd 78207 oracle 20 0 77.4g 1.1g 1.0g S 0.0 0.4 0:11.43 ora_w007_topprd 157015 oracle 20 0 77.4g 1.0g 1.0g S 0.0 0.4 0:12.00 ora_w00c_topprd 73660 oracle 20 0 77.4g 1.0g 1.0g S 0.0 0.4 0:13.04 ora_w00f_topprd 70189 oracle 20 0 77.4g 1.0g 1.0g S 0.0 0.4 0:11.33 ora_w005_topprd 190361 oracle 20 0 77.4g 1.0g 1.0g S 0.0 0.4 0:11.17 ora_w001_topprd 194992 oracle 20 0 77.4g 1.0g 1.0g S 0.0 0.4 0:11.84 ora_w00l_topprd 3240 oracle 20 0 77.4g 1.0g 1.0g S 0.0 0.4 0:14.04 ora_w00h_topprd 69791 oracle 20 0 77.4g 1.0g 1.0g S 0.0 0.4 0:14.72 ora_w00e_topprd 193243 oracle 20 0 77.4g 992.3m 989.1m S 0.0 0.4 0:10.89 ora_w000_topprd 104520 oracle 20 0 77.4g 990656 986464 S 0.0 0.4 0:09.29 ora_w00b_topprd 111719 oracle 20 0 77.4g 981984 977172 S 0.0 0.4 0:02.51 oracle_111719_t 107025 oracle 20 0 77.4g 965608 961772 S 0.3 0.4 0:09.03 ora_w00i_topprd
最新发布
08-15
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