// 2、把redo写入 mtr::m_impl::m_log|-->mtr.commit()->mtr_t::Command::execute()// [见...
mtr.commit() mtr_t::Command::execute() |--> struct mtr_write_log_t{operator()} // 这里使用operator()重载运算符,通过迭代函数遍历blocks | |--> log_buffer_write // 把redo单个block写入 redo log buffer. [见下文]。 | |--> log_buffer_write_completed |--> add_dirty_blocks_to_flush_...
If thetablespace specified in the initialization parameter does not exist,the STARTUP command fails. The UNDO_TABLESPACE parametercan be used to assign a specific undo tablespace to an instance in an OracleReal Application Clusters environment. --如果在初始化参数里指定的undo 表空间不存在,那么实例就...
binlog_cache_size:在事务过程中容纳binlog SQL语句的缓存大小;binlog缓存是服务器支持事务存储引擎并且服务器启用二进制日志(—log-bin选项)的前提下为每个Session分配的内存; 主要是用来提高binlog的写速度;可以通过MySQL的以下2个状态变量来判断当前的binlog_cache_size的状况:binlog...
UndoPro is a command-based undo system integrated into Unity's default system. This allows devs to use actions for their undo/redo operations without forcing the user into a new undo-workflow! editorserializationintegrationunityundo-redocallbackundocommand-patternanonymous-actions ...
OleCommand OnOff OpenMode OperationalDomain OptionalRecordMode OrderMode OuputSection OutputAutoLabelField OutputBitmapField OutputBodySection OutputColumnHeadingsSection OutputDateField OutputDateTimeField OutputEnumField OutputEpilogSection OutputField OutputFooterSection OutputHeaderSection OutputInt64Field OutputIntege...
SpecialEditorCommandEventHandler SqlWorkbenchHierarchy SQLWorkbenchPackage SQLWorkbenchPackage.OptionsPage SQLWorkbenchToolsOptionsPage SQLWorkbenchToolsOptionsPage.DefaultToolsOptionPage SsmsInformation TextBuffer TextSpan TextViewCommandFilter VirtualBaseNode VSContextMenus VsDataSupport VSHiera...
from v$sqlcommand comm where s.COMMAND = comm.COMMAND_TYPE) COMMAND_NAME,*/t.used_ublk*TO_NUMBER(x.value)/1024ASundo_kb, TO_CHAR(s.logon_time,'yy/mm/dd hh24:mi:ss')ASlogin_time, TO_CHAR(SYSDATE-(s.last_call_et)/86400,'yy/mm/dd hh24:mi:ss')ASlast_txn, ...
In general, macro actions cannot be undone. You can also see this from the fact that after making changes to a sheet using a macro, the "Undo" command or button is not active. The VBA function "Undo" only undoes the last user input before running the macro. ...
VERSION_OPERATION :这条记录执行的操作(Insert/Update/Delete)SELECTUNDO_SQLFROMFLASHBACK_TRANSACTION_QUERYWHEREXID='000A000D00000029'; 闪回事务查询。 闪回事务查询有别于闪回查询的特点有以下3个: (1)其正常工作不但需要利用撤销数据,还需要事先启用最小补充日志。