TOO HIGH ELAPSED TIME FOR ENTERPRISE MANAGER QUERIES BECAUSE OF AUDIT RECORDS
The Enterprise Manager Queries are on the top of CPU/TIME consuming queries in statspack reports. The post offers some methods to handle it.
ENTERPRISE MANAGER AGENT IS IN THE “COLLECTIONS_HALTED” STATUS
By the following steps in this post, you can fix the Oracle Management Agent status when it’s stopped working and doesn’t send any data to the OMS anymore.
THE FAILED LOGINS AND THE FAILED LOGINS (HISTORICAL) METRICS ARE EXTREMELY SLOW RESULTING IN HIGH IO AND CPU CONSUMPTION
SYMPTOMS The Oracle Enterprise Manager Cloud Control 13c Release 3 and The Oracle Management Agent 13c release 3 are used to monitor the Oracle database 12.1.0.1.0. Both The Failed Logins and Failed Logins (Historical) Metric are enabled and execute on a regular base. The Mixed Mode Auditing is enabled…
HOW TO TURN OFF ORACLE 12C UNIFIED AUDITING AND CLEAN UP ALL UNIFIED AUDITING RECORDS
12c AUDITING Since the Oracle Database 12c Release 12.1.0.1.0 the Oracle invented a new approach of auditing – The Unified Auditing The Unified Auditing can operate in one of 2 available auditing modes – the Mixed Mode Auditing and the Pure Unified Auditing Mode. By default, every…
HOW TO FIND A QUERY THAT IS EXECUTED BY A DATABASE METRIC IN A TARGET DATABASE
PURPOSE This testcase is made up of number of steps helping out to find out the exact query that is executed by a database metric. The example is based on the Failed Logins (Historical) metric that is regulary executed by the Oracle Enterprise Manager Cloud Control 13c Release 3….
THE FAILED LOGINS METRIC QUERY IS VERY SLOW BECAUSE OF AUD$ TABLE SIZE
SYMPTOMS The Oracle Enterprise Manage Cloud Control 13c is used to monitor the Oracle database. The Failed Logins Metric is enabled and by default executed every 30 minutes. The related metric queries with SQL_ID 83jcj6at6ugq3 (12c) and 1c74605ddbvjt (11gR2) are very slow and causes high IO in the monitored…
THE AUD$ TABLE IS VERY LARGE
SYMPTOMS You noticed that your SYSTEM tablespace is too big in size. By reviewing the DBA_SEGMENTS view you found out that the most part of the SYSTEM tablespace is occupied by the AUD$ segment. You are wondering now what is the segment for and if it can be cleared…
A LOT OF FALSE ‘Global Cache Blocks Lost’ ALERTS REPORTED BY ENTERPRISE MANAGER CLOUD CONTROL 13C RELEASE 3
SYMPTOMS When the Oracle Enterprise Manager Cloud Control 13c is used to monitor the cluster database it repeatedly sends ‘Global Cache Blocks Lost‘ alerts every 5 minutes. The alert message looks like EM Event: Warning:GPPRD_GPPRD1 – Total global cache block lost is 15. Host=db-gp01.local Target type=Database Instance Target name=GPPRD_GPPRD1…
STANDARD QUERY g0bggfqrddc4w CAUSES THE PL/SQL lock timer EVENT TO CONSUME MOST PART OF DBTIME
SYMPTOMS In an AWR report or a Statspack report, the PL/SQL lock timer wait event is in the Top Wait Events list. The Wait Event is consuming a large part of the database time. The average wait time of the wait event is about 60 seconds (60000 ms). A…
STANDARD EM QUERY WITH SQL_ID dx4nqvbtu06bx IS VERY SLOW AND USES LOTS OF TEMPORARY SPACE
ISSUE The standard recurring query of the Enterprise Manager Cloud Control 13c Release 3 with sql_id dx4nqvbtu06bx is running slow and using huge amount of temporary tablespace while executing in a databases of the release 11.2.0.4. The query dx4nqvbtu06bx is executed every 15-20 minutes. The body of the query…
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