SGA实际大小 = DB_CACHE_SIZE + DB_KEEP_CACHE_SIZE + DB_RECYCLE_CACHE_SIZE + DB_nk_CACHE_SIZE + SHARED_POOL_SIZE + LARGE_POOL_SIZE + JAVA_POOL_SIZE + STREAMS_POOL_SIZE(10g中的新内存池) + LOG_BUFFERS+11K(Redo Log Buffer的保护页) + 1MB + 16M(SGA内部内存消耗,适合于9i及之前版本) ...
insert into dbmgr.seg_size_summary values(v_sysdate,s_owner,s_sgement_name,s_sgement_size,s_total_size); EXIT WHEN x = 101; END LOOP; commit; end; / step 3: view data select time,owner,segment_name,segment_size "表大小",segment_tot_size "表和索引总大小" from dbmgr.seg_size_sum...
包括databuffer、pga、shared pool、sga、stream pool、javapool等的情况。 1、Buffer Pool Advisory Buffer pool的大小建议。 Size for Est (M) Oracle估算Buffer pool的大小。 Size Factor 估算值与实际值的比例。如果0.9就表示估算值是实际值的0.9倍。1.0表示buffer pool的实际大小。 Buffers for Estimate 估算的...
bytes / 1024 / 1024 size_mb from v$log a ,v$logfile b where a.group# = b.group# order by 1,2; #查看表空间是不是自动扩展 select tablespace_name,AUTOEXTENSIBLE,INCREMENT_BY from dba_data_files; #设置自动扩展 alter database datafile '/u01/app/oracle/oradata/test.dbf' autoextend on; ...
Oracle Exadata Exascale, the world’s only intelligent data architecture for cloud, provides extreme performance for AI, analytics, and mission-critical workloads at any scale. Its affordable scalability lets organizations of any size gain full Exadata benefits when running Oracle Database in the cloud...
Total bytes across all the data files and how much is used.Body ( DatabaseStorageBytesItem) Type: object Total size of data files in the database and their total usage. Show Source links(optional): array links total_bytes(optional): integer used_bytes(optional): integer ...
SYS@orcl> alter system set sga_max_size = 512M scope=spfile; System altered. SYS@orcl> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SYS@orcl> startup; ORACLE instance started. Total System Global Area 905968152 bytes ...
大表中海量历史数据的更新与删除一直是一件非常头痛的事情,在表已经分区的前提下我们还可以利用并行或者truncate parition等手段来为UPDATE或者DELETE提速, 但是如果对象是普通的非分区对表(non-partitioned heap table)的话,似乎就没有太好的加速方法了, nologging或parallel 对非分区表都没有效果。
select(sum(gets-getmisses-usage-fixed))/sum(gets)"Data dictionary cache"from v$rowcache; --动态性能表 这个使用率也应该在90%以上,否则需要增加共享池的大小。 修改共享池的大小: Sql代码 ALTERSYSTEMSET SHARED_POOL_SIZE =64M; b.缓冲区高速缓存DatabaseBufferCache: ...
FromGet Data, selectDatabase>Oracle database. Enter the net service name of the Oracle Autonomous Database server you want to connect to. In this example, theServeris contosomart_high. Then selectOK. If you're signing in to this server from Power BI Desktop for the first time, you're ...