RMAN-06172: no autobackup found or specified handle is not a valid copy or piece
有个朋友问我,他想恢复数据库(10.2)但控制文件restore失败,报错如下:RMAN> restore controlfile from '/home/orabak/control_bak_20180606';Starting restore at 11-JUN-18using channel ORA_DISK_1RMAN-00571: ===========================================================RMAN-00569: =============== ERRO...
解决sysman.mgmt_task_qtable ORA-600 kdsgrp1错误
trc, trm这两天疯狂产生,占满了磁盘 alert 内容如下:(kdsgrp1)trc文件如下:Trace file /u2/oracle/diag/rdbms/topprod/topprod/trace/topprod_j000_8716.trcOracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit ProductionWith the Partitioning, OLAP, Data Mining and Real Appli...
?shrinking segments(收缩段)
shrinking segments(收缩段)1.执行压缩(不阻碍DML操作)alter table emp shrink space compact;2.回调高水位HWM(阻碍DML操作)alter table emp shrink space;收缩操作的结果:1.改善性能和空间使用情况2.维护索引3.不执行触发器4.可能会减少移植行的数据量。5.建议在IOT上重建二级索引。...
ORA-30036: unable to extend segment by 8 in undo tablespace 'UNDOTBS1'
ORA-12012: error on auto execute of job "xxx"."JOB_AUTO_xxxx_DATA1"ORA-30036: unable to extend segment by 8 in undo tablespace 'UNDOTBS1'ORA-06512: at "xxx.P_FACT_xxx_DAY", line 9故障现象:UNDO表空间越来越大,长此下去最终数据因为磁盘空间不足而崩溃;问题分析:产生问题的原因主要以下两点:1. 有...
deferred_segment_creation
SQL> show parameters deferNAME TYPE &nb...
oracle 11g 新特性 Flashback Data Archive 说明
oracle 11g 新特性 Flashback Data Archive 说明http://www.cnblogs.com/springside-example/archive/2011/05/11/2529739.html
监控和管理Oracle UNDO表空间的使用
监控和管理Oracle UNDO表空间的使用 http://blog.itpub.net/23135684/viewspace-1065601/undo_management=AUTOundo_retention=900 undo_tablespace=UNDOTBS1_smu_debug_mode=33554432_undo_autotune=TRUE1.对于固定UNDO表空间, 将会通过表空间的剩余空间来最大限度保留UNDO信息。如果FIXED UNDO表...