一.开启表的行迁移 alter table table_name enable row movement; select 'alter table '||s.owner||'.'||s.table_name||' enable row movement;' from dba_tables s where s.OWNER in ('ISMP'); 二.开始shrink表与索引 alter table table_name shrink space cascade; select 'alter t…
--Size of All Table Space --1. Used Space SELECT TABLESPACE_NAME,TO_CHAR(SUM(NVL(BYTES,0))/1024/1024/1024, '99,999,990.99') AS "USED SPACE(IN GB)" FROM USER_SEGMENTS GROUP BY TABLESPACE_NAME --2. Free Space SELECT TABLESPACE_NAME,TO_CHAR(SUM(NVL…
Luca Canali on 21 Jan 2016 Topic: this post is about Linux perf and uprobes for tracing and profiling Oracle workloads for advanced troubleshooting. Context The recent progress and maturity of some of the Linux dynamic tracing tools has raised intere…
https://db-blog.web.cern.ch/blog/luca-canali/2014-12-life-oracle-io-tracing-logical-and-physical-io-systemtap Luca Canali on 01 Dec 2014 Topic: This post is about tracing logical and physical reads in Oracle using SystemTap. You find here a few examp…
https://www.enterprisedb.com/well-known-databases-use-different-approaches-mvcc Well-known Databases Use Different Approaches for MVCC Read More by Amit Kapila Author: Amit Kapila Read More by Amit Kapila Database Management Systems u…
In this Document Purpose Scope Details Overview of the RMAN EnvironmentDeciding Whether to Use a Flash Recovery Area (FRA)Deciding Whether to use a Recovery CatalogStarting and Exiting RMANConfiguring Persistent Settings for the RMAN EnvironmentBacki…
