不合理的db_cache_size,或者是SGA自动管理ASMM /Memory 自动管理AMM下都可能因为db_cache_size过小引起大量的db file sequential /scattered read等待事件; maclean曾经遇到过因为大量硬解析导致ASMM 下shared pool共享池大幅度膨胀,而db cache相应缩小shrink的例子,最终db cache收缩到只有几百兆,本来没有的物理读等待...
call keiutFlush twice to clear all active elements from x$keiut_info/v$index_usage_info (check contents) PDB SYS session check x$keiut is empty User session: check dba_index_usage for targetted index(es) execute some statements forcing use of index and check execution plan PDB sys ...
Cache Oracle Instant Client Oracle Key Vault Oracle Labs In-Memory Graph Analytics (PGX) Oracle Label Security Oracle Multitenant Oracle OLTP Oracle Partitioning ECCN Eligible License Exception 5D992.c EAR99 EAR99 5D992.c 5D992.c EAR99 5D992.c 5D992.c 5D992.c EAR99 5D992.c 5D992.c 5D...
Oracle 11g is the clear leader in this area. Oracle has invested heavily into self-tuning capabilities including automated storage and memory management and intelligent tuning advisors. Now in 11g, Oracle closes the loop and offers intelligent automation tools to create a self-healing database. The...
cache_file='/u02/app/oracle/oradata/flashdata/.ACFS/ snaps/flash/boston/flash1' 12. On all standby hosts create audit directory for the boston database. [oracle@stbydb1] mkdir -p /u01/app/oracle/admin/boston/adump [oracle@stbydb2] mkdir -p /u01/app/oracle/admin/boston/adump 46...
Physica lcorruption due to hardware or software can occur in two general places -- inmemory (including various IO buffers and the Oracle buffer cache) or on disk.Operator error such as overwriting a file can also be defined as a physicalcorruption. Logical corruption on theother hand is usual...
Any query that displays "HASH GROUP BY" in theexecution plan could hit this bug. The "HASH GROUP BY" feature is enabled by defaultin 10.2. lSolution Patch 4604970 can be downloaded from Metalink for mostplatforms . Problem is resolved in latest Patchset release 10.2.0.3. ...
STATUS current DESCRIPTION " The trap will generated if value of the monitoring object exceeds a certain threshold. " ::= { apSystemManagementNotifications 1 } When the resource usage retreats below a defined threshold, the Oracle Communications Session Border Controller sends an apSysMgmtGroupClear...
The Request Monitoring feature provides end-to-end visibility into requests for Java applications deployed to WebLogic Server. It establishes a clear view of a request flowing through a multi-tier java environment. Real time visibility into business request volumes and critical system components, enabli...
Document 33121934.8 Library cache lock / load lock / mutex x during connection storm due to update user$ 是,从 19.16 起 应用19.16 或以上 Document 36587533.8 RESULT CACHE: GLOBAL FLUSH SHOULD ALWAYS CLEAR BYPASS FLAG EVEN IF THE RESULT CACHE IS UNINITIALIZED 是,从 19.24 起 应用19.24 或以上 常...