导读:1建站知识Oracle下常用的dump命令记录，方便以后使用查询。网站建设公司网站seo优化软件。

一.Mseo网站优化软件emory Dumps 1).Global Area ALTER SESSION SET EVENTS ‘immediate trace name global_area level n'; 1 包含PGA 2 包含SGA 4 包含UGA 8 包含indrect memory 2).Library Cache ALTER SESSION SET EVENTS ‘immediate trace name library_cache level n'; 1 library cache统计信息 2 包含hash table histogram 3 包含object handle 4 包含object结构（Heap 0） 3).Row Cache ALTER SESSION SET EVENTS ‘immediate trace name row_cache level n'; 1 row cache统计信息 2 包含hash table histogram 8 包含object结构 4).Buffers ALTEseo网站关键词优化R SESSION SET EVENTS ‘immediate trace name buffers level n'; 1 buffer header 2 level 1 + block header 3 level 2 + block contents 4 level 1 + hash chain 5 level 2 + hash chain 6 level 3 + hash chain 8 level 4 + users/waiters 9 level 5 + users/waiters 10 level 6 + users/waiters 5).Buffer ALTER SESSION SET EVENTS ‘immediate trace name buffer level n'; n为某个指定block的rdba，该命令可以转储某个block在buffer中的所有版本。 6).Heap ALTER SESSION SET EVENTS ‘immediate trace name heapdump level level'; 1 PGA摘要 2 SGA摘要 4 UGA摘要 8 Current call(CGA)摘要 16 User call(CGA)摘要 32 Large call(LGA)摘要 1025 PGA内容 2050 SGA内容 4100 UGA内容 8200 Current call内容 16400 User call内容 32800 Large call内容 7).Sub Heap Oracle 9.0.1版本之前 ALTER SESSION SET EVENTS ‘immediate trace name heapdump_addr level n'; 若n为subheap的地址，转储的是subheap的摘要信息 若n为subheap的地址+1，转储的则是subheap的内容 Oracle 9.2.0版本之后 ALTER SESSION SET EVENTS ‘immediate trace name heapdump_addr level n, addr m'; 其中m为subheap的地址 n为1转储subheap的摘要，n为2转储subheap的内容 8).Process State ALTER SESSION SET EVENTS ‘immediate trace name processstate level n'; 9).System State ALTER SESSION SET EVENTS ‘immediate trace name systemstate level n'; 10).Error State ALTER SESSION SET EVENTS ‘immediate trace name errorstack level n'; 0 Error stack 1 level 0 + function call stack 2 level 1 + process state 3 level 2 + context area 11).Hang Analysis ALTER SESSION SET EVENTS ‘immediate trace name hanganalyze level n'; 12).Work Area ALTER SESSION SET EVENTS ‘immediate trace name workareatab_dump level n'; 1 SGA信息 2 Workarea Table摘要信息 3 Workarea Table详细信息 13).Latches ALTER SESSION SET EVENTS ‘immediate trace name latches level n'; 1 latch信息 2 统计信息 14).Events ALTER SESSION SET EVENTS ‘immediate trace name events level n'; 1 session 2 process 3 system 15).Locks ALTER SESSION SET EVENTS ‘immediate trace name locks level n'; 16).Shared Server Process ALTER SESSION SET EVENTS ‘immediate trace name shared_server_state level n'; n取值为1~14 17).Background Messages ALTER SESSION SET EVENTS ‘immediate trace name bg_messages level n'; n为pid+1 二.File Dumps 1).Block Oracle 7之前 ALTER SESSION SET EVENTS ‘immediate trace name blockdump level n'; n为block的rdba Oracle8以后 ALTER SYSTEM DUMP DATAFILE file# BLOCK block#; ALTER SYSTEM DUMP DATAFILE file# BLOCK MIN minimum_block# BLOCK MAX maximum_block#; 2).Tree Dump ALTER SESSION SET EVENTS ‘immediate trace name treedump level n'; n为object_id 3).Undo Segment Header ALTER SYSTEM DUMP UNDO_HEADER 'segment_name'; 4).Undo for a Transaction ALTER SYSTEM DUMP UNDO BLOCK 'segment_name' XID xidusn xidslot xidsqn; 5).File Header ALTER SESSION SET EVENTS ‘immediate trace name file_hdrs level n'; 1 控制文件中的文件头网站建设多少钱信息 2 level 1 + 文件头信息 3 level 2 + 数据文件头信息 10 level 3 6).Control file ALTER SESSION SET EVENTS ‘immediate trace name controlf level n'; 1 文件头信息 2 level 1 + 数据库信息 + 检查点信息 3 level 2 + 可重用节信息 10 level 3 7).Redo log Header ALTER SESSION SET EVENTS ‘immediate trace name redohdr level n'; 1 控制文件中的redo log信息 2 level 1 + 文件头信息 3 level 2 + 日志文件头信息 10 level 3 8).Redo log ALTER SYSTEM DUMP LOGFILE ‘FileName'; ALTER SYSTEM DUMP LOGFILE ‘FileName' SCN MIN MinimumSCN SCN MAX MaximumSCN TIME MIN MinimumTime TIME MAX MaximumTime LAYER Layer OPCODE Opcode DBA MIN FileNumber . BlockNumber DBA MAX FileNumber . BlockNumber RBA MIN LogFileSequenceNumber . BlockNumber RBA MAX LogFileSequenceNumber . BlockNumber; 其中time = (((((yyyy - 1988)) * 12 + mm - 1) * 31 + dd - 1) * 24 + hh) * 60 + mi) * 60 + ss; 9).Loghist ALTER SESSION SET EVENTS ‘immediate trace name loghist level n'; 1 dump控制文件中最早和最迟的日志历史项 1 dump 2^n个日志历史项相关网站建设公司网站seo优化软件。

关键词标签: 常用 命令