详解 db file sequential read 等待事件
db file sequential read (本文由thomaswoo_dba翻译,转载请注明出处)db file sequential read 事件有三个参数:file#,first block#, block count, 在oracle 10g里,此等待事件在归于 User I/O wait class 下面的. 处理db file sequential read 事件要牢牢把握下面三个主要思想:1)oracle 进程需要访问的block不能从SGA ...
Windows 平台监听程序无法启动 报TNS-12560 TNS-00530
Windows 平台监听程序无法启动 报TNS-12560 TNS-00530问题现象--01: C:\Users\Administrator>lsnrctl startLSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 12-12月-2014 4:50Copyright (c) 1991, 2010, Oracle. All rights reserved.启动tnslsnr: 请稍候...Failed to st...
/bin/bash^M: bad interpreter: No such file or dire
在执行shell脚本时提示这样的错误主要是由于shell脚本文件是dos格式,即每一行结尾以\r\n来标识,而unix格式的文件行尾则以\n来标识。 查看脚本文件是dos格式还是unix格式的几种办法。(1)cat -A filename 从显示结果可以判断,dos格式的文件行尾为^M$,unix格式的文件行尾为$。(2)od -t x1...
ALERT.LOG for ASM Shows "WARNING: failed to online diskgroup resource ora.GI.dg
APPLIES TO:OracleDatabase - Enterprise Edition - Version 11.2.0.1 to 12.1.0.1 [Release 11.2 to12.1]Informationin this document applies to any platform.***Checked for relevance on 03-Jul-2013*** SYMPTOMSIf OCR is located on ASM diskgroup, following shows inASM alert log...