Какой процент (примерно!, на вскидку!) из этого списка можно заменить периодически опросом cответствующих вьюх типа v$sga и т.п.:
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Metric Group Metric Name
Response Response - Status
Response Status
Response UpDown Status
Active Loader Status Loader Throughput (rows per second)
Active Management Servlets Management Service Status
Agent Certificate Expiration Information No. of Days for Expiration
Agent Process Statistics CPU Usage (%)
Agent Process Statistics Number Files Open
Agent Process Statistics Resident Memory Utilization (%)
Agent Process Statistics Resident Memory Utilization (KB)
Agent Process Statistics Schedule Attempts Percentage
Agent Process Statistics Virtual Memory Utilization Growth (%)
Agent Status Restarts (past 24 hrs)
Alert Log Error Status Archiver Hung Alert Log Error Status
Alert Log Error Status Data Block Corruption Alert Log Error Status
Alert Log Error Status Generic Alert Log Error Status
Alert Log Error Status Media Failure Alert Log Error Status
Alert Log Error Status Session Terminated Alert Log Error Status
Archive Area Archive Area Used (%)
Archive Area Free Archive Area (KB)
Cache Performance Hits (% of requests)
Data Failure Data Failure Detected
Database Job Status Broken Job Count
Database Job Status Failed Job Count
Database Limits Current Logons Count
Database Limits Current Open Cursors Count
Database Limits Process Limit Usage (%)
Database Limits Session Limit Usage (%)
Database Limits User Limit Usage (%)
Database Services Service CPU Time (per user call) (microseconds)
Database Services Service Response Time (per user call) (microseconds)
Deferred Transactions Deferred Transaction Count
Deferred Transactions Deferred Transaction Error Count
Disk Activity Average Disk I/O Service Time (ms)
Disk Activity Disk Device Busy (%)
Dump Area Dump Area Used (%)
Dump Area Free Dump Area (KB)
Efficiency Buffer Cache Hit (%)
Efficiency CPU Usage (per second)
Efficiency CPU Usage (per transaction)
Efficiency Cursor Cache Hit (%)
Efficiency Data Dictionary Hit (%)
Efficiency Database CPU Time (%)
Efficiency Library Cache Hit (%)
Efficiency Library Cache Miss (%)
Efficiency Parallel Execution Downgraded (per second)
Efficiency Parallel Execution Downgraded to Serial (per second)
Efficiency Parallel Execution Downgraded 25% or more (per second)
Efficiency Parallel Execution Downgraded 50% or more (per second)
Efficiency Parallel Execution Downgraded 75% or more (per second)
Efficiency PGA Cache Hit (%)
Efficiency Redo Log Allocation Hit (%)
Efficiency Response Time (per transaction)
Efficiency Row Cache Miss Ratio (%)
Efficiency Sorts in Memory (%)
Event Status Event System UpDown
Failed Logins Failed Login Count
File and Directory Monitoring File or Directory Attribute Not Found
File and Directory Monitoring File or Directory Permissions
File and Directory Monitoring File or Directory Size Change Rate (KB/minute)
File and Directory Monitoring File or Directory Size (MB)
Filesystems Available (MB)
Filesystems Filesystem Space Available (%)
Health Check Instance Status
Health Check Maintenance
Health Check Mounted
Health Check Unavailable
Health Check Unmounted
High Availability Recovery Window Disk Recovery Window (seconds)
High Availability Recovery Window Disk Unprotected Data Window (seconds)
High Availability Recovery Window Media Recovery Window (seconds)
High Availability Recovery Window Media Unprotected Data Window (seconds)
HTTP Transaction [HTTP Transaction] Perceived Time per Page (ms)
HTTP Transaction [HTTP Transaction] Status
Incident Diagnostic Incident
Incident Generic Incident
Incident Generic Internal Error
Incident Oracle Data Block Corruption
Incident Out of Memory
Incident Problem Key
Incident Status Access Violation Status
Incident Status Cluster Error Status
Incident Status Deadlock Status
Incident Status File Access Error Status
Incident Status Generic Incident Status
Incident Status Generic Internal Error Status
Incident Status Inconsistent DB State Status
Incident Status Internal SQL Error Status
Incident Status Oracle Data Block Corruption Status
Incident Status Out of Memory Status
Incident Status Redo Log Corruption Status
Incident Status Session Terminated Status
Invalid Objects Total Invalid Object Count
Invalid Objects by Schema Owner's Invalid Object Count
JVM Metrics Heap Usage (%)
Load CPU in I/O Wait (%)
Load CPU in System Mode (%)
Load CPU in User Mode (%)
Load CPU Utilization (%)
Load Free Memory (%)
Load Logical Free Memory (%)
Load Logical Used Memory (%)
Load Memory Page Scan Rate (per second)
Load Memory Utilization (%)
Load Run Queue Length (1 minute average)
Load Run Queue Length (15 minute average)
Load Run Queue Length (5 minute average)
Load Swap Utilization (%)
Load Total Disk I/O Per Second
Load Total Processes
Load Total Users
LPAR Performance on AIX CPU Utilization (%)
Metric Collection Errors Reported(Per Day) Number Of Errors Reported
mod_oc4j General Metrics Percentage of Requests that Were Failures
Monitoring User Connectivity Issue Password Invalid
Network Interfaces Network Interface Combined Utilization (%)
Network Interfaces Network Interface Total Error Rate (%)
Network Interfaces Network Interface Total I/O Rate (MB/sec)
Notification Method Performance Average Delivery Time (ms)
OCM Instrumentation Need to Instrument with OCM
OHS Server Metrics Busy Threads (%)
OMS communication status Agent blocked status
OMS communication status Consecutive heartbeat failure count
OMS communication status Consecutive metadata upload failure count
OMS communication status Consecutive severity upload failure count
OMS communication status OMS Agent time skew (mins)
Operating System Audit Records Size of Audit Files (MB)
Operational Error Status Archiver Hung Status
Operational Error Status Data Block Corruption Status
Operational Error Status Generic Operational Error Status
Operational Error Status Media Failure Status
Overall Page Performance Page Processing Time (sec)
Overall Status Unmonitored Targets (%)
Page Performance Page Processing Time in OMS (sec)
Page Performance Page Processing Time in Repository (sec)
Page Performance Page Processing Time (sec)
Page Performance Processing Time in Browser/Network for Multi-Requests Page (sec)
Paging Activity Pages Paged-out (per second)
Paging Activity Pages Scanned by Page Stealing Daemon (per second)
Performance Perceived Time per Page (ms)
Program Resource Utilization Program's Max CPU Time Accumulated (Minutes)
Program Resource Utilization Program's Max CPU Utilization (%)
Program Resource Utilization Program's Max Process Count
Program Resource Utilization Program's Max Resident Memory (MB)
Program Resource Utilization Program's Min Process Count
Program Resource Utilization Program's Total CPU Time Accumulated (Minutes)
Program Resource Utilization Program's Total CPU Utilization (%)
Recovery Corrupt Data Block Count
Recovery Datafiles Need Media Recovery
Recovery Missing Media File Count
Recovery Area Recovery Area Free Space (%)
Repository Collection Task Performance Run Duration(Seconds)
Response Default Timezone in use
Response Nmo Setuid Status
Response Response Time (msec)
Response State
Response User Logon Time (msec)
SCN Growth Statistics SCN Health
Service Initialization Errors Service Status
SGA Pool Wastage Java Pool Free (%)
SGA Pool Wastage Large Pool Free (%)
SGA Pool Wastage Shared Pool Free (%)
Snapshot Too Old Snapshot Too Old due to Tablespace Limit
SQL Response Time SQL Response Time (%)
Streams Pool Usage Streams Pool Full
Swap Area Status Swap Free
System Response Time Per Call Response Time (centi-seconds per call)
Tablespaces Full Tablespace Free Space (MB)
Tablespaces Full Tablespace Space Used (%)
Tablespaces Full (Temp) Tablespace Space Used (%) (Temp)
Tablespaces Full (Undo) Tablespace Space Used (%) (Undo)
Targets not uploading Count of targets not uploading
Temporary File Status Temporary File Status
test_response [Test Response] Status
Throughput Average Active Sessions
Throughput Average Synchronous Single-Block Read Latency (ms)
Throughput BG Checkpoints (per second)
Throughput Branch Node Splits (per second)
Throughput Branch Node Splits (per transaction)
Throughput Consistent Read Blocks Created (per second)
Throughput Consistent Read Blocks Created (per transaction)
Throughput Consistent Read Changes (per second)
Throughput Consistent Read Changes (per transaction)
Throughput Consistent Read Gets (per second)
Throughput Consistent Read Gets (per transaction)
Throughput Consistent Read Undo Records Applied (per second)
Throughput Consistent Read Undo Records Applied (per transaction)
Throughput Cumulative Logons (per second)
Throughput Cumulative Logons (per transaction)
Throughput Database Block Changes (per second)
Throughput Database Block Changes (per transaction)
Throughput Database Block Gets (per second)
Throughput Database Block Gets (per transaction)
Throughput Database Time (centiseconds per second)
Throughput DBWR Checkpoints (per second)
Throughput Enqueue Deadlocks (per second)
Throughput Enqueue Deadlocks (per transaction)
Throughput Enqueue Requests (per second)
Throughput Enqueue Requests (per transaction)
Throughput Enqueue Timeout (per second)
Throughput Enqueue Timeout (per transaction)
Throughput Enqueue Waits (per second)
Throughput Enqueue Waits (per transaction)
Throughput Executes (per second)
Throughput Executes Performed without Parses (%)
Throughput Full Index Scans (per second)
Throughput Full Index Scans (per transaction)
Throughput Hard Parses (per second)
Throughput Hard Parses (per transaction)
Throughput I/O Megabytes (per second)
Throughput I/O Requests (per second)
Throughput Leaf Node Splits (per second)
Throughput Leaf Node Splits (per transaction)
Throughput Network Bytes (per second)
Throughput Number of Transactions (per second)
Throughput Open Cursors (per second)
Throughput Open Cursors (per transaction)
Throughput Parse Failure Count (per second)
Throughput Parse Failure Count (per transaction)
Throughput Physical Reads Direct Lobs (per second)
Throughput Physical Reads Direct Lobs (per transaction)
Throughput Physical Reads Direct (per second)
Throughput Physical Reads Direct (per transaction)
Throughput Physical Reads (per second)
Throughput Physical Reads (per transaction)
Throughput Physical Writes Direct Lobs (per second)
Throughput Physical Writes Direct Lobs (per transaction)
Throughput Physical Writes Direct (per second)
Throughput Physical Writes Direct (per transaction)
Throughput Physical Writes (per second)
Throughput Physical Writes (per transaction)
Throughput Recursive Calls (per second)
Throughput Recursive Calls (per transaction)
Throughput Redo Generated (per second)
Throughput Redo Generated (per transaction)
Throughput Redo Writes (per second)
Throughput Redo Writes (per transaction)
Throughput Rows Processed (per sort)
Throughput Scans on Long Tables (per second)
Throughput Scans on Long Tables (per transaction)
Throughput Session Logical Reads (per second)
Throughput Session Logical Reads (per transaction)
Throughput Soft Parse (%)
Throughput Sorts to Disk (per second)
Throughput Sorts to Disk (per transaction)
Throughput Total Index Scans (per second)
Throughput Total Index Scans (per transaction)
Throughput Total Parses (per second)
Throughput Total Parses (per transaction)
Throughput Total Table Scans (per second)
Throughput Total Table Scans (per transaction)
Throughput User Calls (%)
Throughput User Calls (per second)
Throughput User Calls (per transaction)
Throughput User Commits (per second)
Throughput User Commits (per transaction)
Throughput User Rollback Undo Records Applied (per second)
Throughput User Rollback Undo Records Applied (per transaction)
Throughput User Rollbacks (per second)
Throughput User Rollbacks (per transaction)
Total Disk Usage Total Disk Available (%) (across all local filesystems)
Total Disk Usage Total Disk Space Available (across all local filesystems in MB)
User Audit Audited User
User Block Blocking Session Count
User Block Chain Blocking Session DB Time
User Locks Maximum Blocked DB Time (seconds)
User Locks Maximum Blocked Session Count
Wait Bottlenecks Wait Time (%)
Waits by Wait Class Average Users Waiting Count
Waits by Wait Class Database Time Spent Waiting (%)
Zombie Processes % of Processes in Zombie State