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  • 关于oracle redo log buffer 你所不知道的东西

    [ora11@lixora ~]$ sqlplus / as sysdba

    SQL*Plus: Release 11.2.0.1.0 Production on Wed Oct 8 09:57:50 2014

    Copyright (c) 1982, 2009, Oracle.  All rights reserved.


    Connected to:
    Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
    With the Partitioning, OLAP, Data Mining and Real Application Testing options

    SQL>
    SQL>
    SQL>
    SQL> select database_role from v$database;

    DATABASE_ROLE
    --------------------------------
    PRIMARY

    SQL> SELECT x.ksppinm NAME, y.ksppstvl VALUE, x.ksppdesc describ
      2  FROM SYS.x$ksppi x, SYS.x$ksppcv y
      3  WHERE x.inst_id = USERENV ('Instance')
      4  AND y.inst_id = USERENV ('Instance')
      5  AND x.indx = y.indx
      6  AND x.ksppinm LIKE '%&par%'
      7  /
    Enter value for par: _log_paralle
    old   6: AND x.ksppinm LIKE '%&par%'
    new   6: AND x.ksppinm LIKE '%_log_paralle%'

    NAME
    --------------------------------------------------------------------------------
    VALUE
    --------------------------------------------------------------------------------
    DESCRIB
    --------------------------------------------------------------------------------
    _log_parallelism_max
    1
    Maximum number of log buffer strands

    _log_parallelism_dynamic
    TRUE
    Enable dynamic strands

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  • 原文地址:https://www.cnblogs.com/clnchanpin/p/6742968.html
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