更倾向于sga的扩展,当然这并不绝对。 3)设置memory_target的同时,设置了pga_aggregate_target而未设置sga_target:这种情况下Oracle会自动调优以上2个参数,sga_target的初始值为min(memory_target-pga_aggregate_target,sga_max_size),注意这里说的是初始值;类似于以上的情况因为没有硬性地设置sga_target,故而sga/...
For example, after a live migration, Oracle Database will have its System Global Area (SGA) and other memory structures laid out the same way as before the migration. Long computations—You can maximize application availability during the migration, because there is no need to shut down the ...
As per Oracle doc this is not a bug. To fix this issue either you need to increase the size of SGA or else decrease the value of open_links_per_instance. I encountered this error when I set this value to 1500 and SGA was allocated to 8GB. After setting this parameter I was not ab...
1 | HOW TO IMPROVE THE EFFICIENCY AND PERFORMANCE OF AN SAP ENVIRONMENT Figure 1. Oracle Optimized Solution for SAP provides the components needed in one system. SAP Security: Understanding the Threat ERP systems, including SAP, have transformed core business functions in the modern enterprise, ...
Oracle's SGA can be configured to a very large value (thousands of megs) but it will fail to run because Oracle will request about 1000 megs at a time...and there will seldom be a single segment (it must be contiguous) that size. The reason is that the shared memory address spa...
Database consolidation means running databases on a common set of infrastructure, most often to reduce costs and increase operational efficiency. The business drivers and approaches to consolidation are the same, regardless of whether consolidation is done in an on-premises data center, or in the Cl...
How to find root cause of memory leak hpux 11.11 We have a memory leak .We have hp900 L4000 model with hpux 11.11 (pa-risc). We have 4Gbyte of memory.There are 3 oracle instance running 10.2.03 of SGA size 160MB each. After startup we have about 1,7Gb free (top). ...
10.4 Oracle 11g 11. Logging & Tracing 11.1 Alert File 11.2 Max_dump_file_size 11.3 User and core dump size parameters 11.4 Audit files 11.5 Sqlnet 1. Introduction --- This article explains how to perform a health check on the database. General guidelines are given...
A.Thedatafilecannotberecovered. B.ThedatefilecanberestoredfromtheSYSTEMautobackup. C.Takethetablespaceoffline,drop,kandre-createit. D.RecoveryManager(RMAN)isusedtorecoverthedatafile. E.TheALTERDATABSECREATEDATAFILE..commandisusedtorecoverthedatafile. ...
Method 1:smon_scn_time keeps track of the mapping between time and SCN at approximately 5 minutes granularity. That can be used to measure SCN rate, see code below. Although, this is easier to check, remember that there is no easy way to identify if the SCN increase is due to intrinsic...