Transport Block Size, Throughput and Code rate Since the size of transport block is not fixed, often a question comes to mind as to how transport block size is calculated in LTE.BackGroundIf we only consider "Uplink direction" and we assume th
背景:最近采购了一批新的服务器,底层的存储设备的默认physical sector size从原有的 512B 改为了 4K. 装完系统以后,在做数据库物理备份恢复时xtrabackup报了这么一个错.但是同样的备份在512B sector size的老系统上却可以恢复. 报错如下: InnoDB: Error: tried to read 2048 bytes at offset 0 0.InnoDB: Was only able to read 0.140304 18:48:12 Inno
一.对数据文件检查 注意:应该在关闭数据库模式下进行bbed的操作 [oracle@ora10 controlfile]$ dbv file=/u01/app/oracle/oradata/ORCL/datafile/test_01.dbf blocksize=8192 DBVERIFY: Release 10.2.0.1.0 - Production on Fri Jan 16 23:05:01 2015 Copyright (c) 1982, 2005, Oracle. All rights
解决Virtual Box 安装Mac OS X当出现"hfs: summary table not allowed on FS with block size of 2048"问题 安装的时候首先出现 hfs: summary table not allowed on FS withblock size of 2048 错误.然后就是 hfs: could not initializc summary table forOSX Base System 错误. 一開始也不知道是怎么回事
SYS@orcl> select TABLESPACE_NAME ,AUTOEXTENSIBLE from dba_data_files ; ERROR: ORA-00379: no free buffers available in buffer pool DEFAULT for block size 16K no rows selected SYS@orcl> show parameter db_16k_cache_size NAME TYPE VALUE ----------------
Although the size of redo entries is measured in bytes, LGWR writes the redo to the log files on disk in blocks. The size of redo log blocks is fixed in the Oracle source code and is operating system specific. Oracle's documentation uses the term "op
有一次恢复库以后,open时报错ORA-00349,例如以下.最后通过删除这个log group解决. SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-00349: failure obtaining block size for '+fra_grp01_d select group#,name,bytes,status from v$logfile; SQL>