近日發現oracle占用的空間很大，經查，發現是
/u01/app/oracle/diag/rdbms/orcl/orcl/alert 警告日志
/u01/app/oracle/diag/rdbms/orcl/orcl/trace 跟蹤日志
這兩個目錄日志文件太多。占用十幾個G
用adrci清除日志
先確定目錄
SQL> select value from v$diag_info where name ='Diag Alert'; VALUE -------------------------------------------------------------------------------- /u01/app/oracle/diag/rdbms/orcl/orcl/alert SQL> select value from v$diag_info where name ='Diag Trace'; VALUE -------------------------------------------------------------------------------- /u01/app/oracle/diag/rdbms/orcl/orcl/trace
adrci是操作系統下的oracle命令，可以直接運行adrci
[oracle@dom169 /]$ adrci ADRCI: Release 12.1.0.2.0 - Production on Sat Apr 16 21:17:04 2022 Copyright (c) 1982, 2014, Oracle and/or its affiliates. All rights reserved. ADR base = "/u01/app/oracle" adrci>
先查看homepath是不是所要處理的日志目錄
adrci> show home ADR Homes: diag/rdbms/orcl/orcl adrci>
如果不是，先設置homepath
adrci> set homepath diag/rdbms/orcl/orcl
清空警告日志，1440是按分鍾算的，就是一天，這是清空一天以前的警告日志
adrci> purge -age 1440 -type alert
清空跟蹤日志，1440是按分鍾算的，就是一天，這是清空一天以前的跟蹤日志
adrci> purge -age 1440 -type trace
查看日志保留策略
默認SHORTP_POLICY為720小時（即30天），LONGP_POLICY為8760小時（即365天）
adrci> show control ADR Home = /u01/app/oracle/diag/rdbms/orcl/orcl: *************************************************************** ADRID SHORTP_POLICY LONGP_POLICY -------------------- -------------------- -------------------- 1335663986 720 8760 1 rows fetched
LONGP_POLICY is used to purge information that have long life. Default value is 365 days.
This policy is used by :
ALERT
INCIDENT
SWEEP
STAGE
HM
SHORTP_POLICY is used to purge the information that have short life. Default value is 30 days.
This policy is used by :
TRACE
CDUMP
UTSCDMP
IPS
默認SHORTP_POLICY為720小時（即30天），LONGP_POLICY為8760小時（即365天）
#設置SHORTP_POLICY 15天 LONGP_POLICY 90天
adrci> set control (SHORTP_POLICY = 360) adrci> set control (LONGP_POLICY = 2160)