zoukankan      html  css  js  c++  java
  • Oracle X$ View:X$KJBL

    The status of buffer locks can be checked through the table X$KJBL; it is not necessary to dump the locks with the ORADEBUG command, in order to get to this information. The table contains the client and shadow locks.    
    Column name            Data type            Description
    KJBLLOCKP              RAW,kjbl*            Lock pointer. Can be joined with X$LE.LE_KJBL.
    KJBLGRANT              VARCHAR2 (9)         Current grant level, valid values are:
                                                KJUSERNL (0), KJUSERCR (1), KJUSERCW (2), KJUSERPR
                                                (3), KJUSERPW (4), KJUSEREX (5)
    KJBLREQUEST            VARCHAR2 (9)         Request Level, valid values are:
                                                (See KJBLGRANT)
                                                KJBLROLE NUMBER Granted Role:
                                                KJBL_GRANT_N (0x00), KJBL_GRANT_S (0x01)
                                                KJBL_GRANT_X (0x02), KJBL_REQ_S (0x04),
                                                KJBL_REQ_X (0x08), KJBL_REQ_STL (0x10),
                                                KJBL_REQ_CR (0x10), KJBL_OACK (0x20),
                                                KJBL_ROLE_G (0x40), KJBL_HAS_PI (0x80)
                                                
    KJBLRESP               RAW, kjbr*          Current Resource Info (Resource pointer)
    KJBLNAME               VARCHAR2 (30)       Resource name in Hex notation ([id1], [id2], [Type])
    KJBLNAME2              VARCHAR2 (30)       Resource name in Decimal notation (id1, id2, Type)
    KJBLQUEUE              NUMBER              Grant / Convert queue:
                                               Grant Queue (0x00), Convert Queue 0x80
    KJBLLOCKST             VARCHAR2 (64)       Lock state:
                                               KJUSERGRANTED (0x00), KJUSEROPENING (0x01),
                                               KJUSERCLOSING (0x02), KJUSERCANCELLING (0x04),
                                               KJUSERCVTING (0x08), KJUSERSTANDALONE (0x10),
                                               KJUSERASTDELAYED (0x20), KJUSERMSGPENDING(0x40),
                                               KJUSERFROZEN (0x80)
    KJBLWRITING            NUMBER              Writing
                                               ·0, not writing; 1, writing
    KJBLREQWRITE                               Write requested
                                               ·  0, no request; 1, write requested
    KJBLOWNER              NUMBER              Owning instance – node id
    KJBLMASTER             NUMBER              Master instance – node id
    KJBLBLOCKED            NUMBER              Blocked lock? – Checks if there is a converting lock
    KJBLBLOCKER            NUMBER              Blocking lock? - Checks if there is a lock held in an incompatible mode
        The columns KJBLBLOCKER and KJBLBLOCKED in particular let you determine if you are waiting on blocked lock or if you are blocking other sessions. With this table, it is also possible to determine where the lock is mastered and the role of the lock.
  • 相关阅读:
    获取具有指定扩展数据的所有实体的Id,并存入Id数组中
    FastDFS单机版安装教程
    Git简要开发流程
    Delay延迟队列
    HTTP调用接口方法
    Tomcat为什么要使用Facde模式对Request对象进行包装?
    SpringBoot注解
    <th:>标签使用
    Git命令速查表
    IDEA中对Git的常规操作(合并,提交,新建分支,更新)
  • 原文地址:https://www.cnblogs.com/macleanoracle/p/2967415.html
Copyright © 2011-2022 走看看