Oracledb Receiver

Available in: contrib Maintainers: @dmitryax, @crobert-1, @atoulme, @ebrdarSplunk, @XSAM, @akshays-19, @sv-splunk, @splunk-shanu Source: opentelemetry-collector-contrib

Supported Telemetry

Overview

Getting Started

To use the Oracle DB receiver you must define how to connect to your DB. This can be done in two ways, defined in the Primary and Secondary configuration option sections. Defining one of the two configurations is required. If both are defined, the primary option will be used.

Primary Configuration Option

Required options:

datasource: Oracle database connection string. Special characters must be encoded. Refer to Oracle Go Driver go_ora documentation for full connection string options.

Example:

receivers:
  oracledb:
    datasource: "oracle://otel:password@localhost:51521/XE"

Secondary Configuration Option

Required options:

endpoint: Endpoint used to connect to the Oracle DB server. Must be in the format of host:port
password: Password for the Oracle DB connection. Special characters are allowed.
service: Oracle DB service that the receiver should connect to.
username: Username for the Oracle DB connection.

Example:

receivers:
  oracledb:
    endpoint: localhost:51521
    password: p@sswo%d
    service: XE
    username: otel

Optional Configuration Options

collection_interval (default = 10s): The interval at which metrics should be emitted by this receiver.
initial_delay (default = 1s): The initial time period this receiver waits before starting.
timeout (default = 0): Timeout for each Oracle DB request. Disabled by default.

Permissions

Instance detection

These grants are required to populate the oracle.db.version, oracle.db.role, oracle.db.open_mode, and oracle.db.pdb resource attributes. Detection is best-effort; failures are logged at warn level and the receiver continues.

GRANT SELECT ON V_$INSTANCE TO <username>;
GRANT SELECT ON V_$DATABASE TO <username>;

Note: sys_context('USERENV', ...) queries against DUAL require no additional grant and are available to all database users.

Hosting type detection (Oracle >=19c only)

These grants are required to populate the oracle.db.hosting_type resource attribute. Only applies to Oracle 19c and later. Detection is best-effort; failures are logged at warn level and the receiver continues.

GRANT SELECT ON V_$DATAFILE TO <username>;
GRANT SELECT ON V_$PDBS TO <username>;        -- OCI detection, connected to PDB only
GRANT SELECT ON CDB_SERVICES TO <username>;   -- OCI confirmation, connected to PDB only

Metrics collection

Depending on which metrics you collect, you will need to assign these permissions to the database user:

GRANT SELECT ON V_$SESSION TO <username>;
GRANT SELECT ON V_$SYSSTAT TO <username>;
GRANT SELECT ON V_$RESOURCE_LIMIT TO <username>;
GRANT SELECT ON V_$OSSTAT TO <username>;
GRANT SELECT ON DBA_TABLESPACES TO <username>;
GRANT SELECT ON DBA_DATA_FILES TO <username>;
GRANT SELECT ON DBA_TABLESPACE_USAGE_METRICS TO <username>;
GRANT SELECT ON V_$SGAINFO TO <username>;

Per-PDB metrics (CDB multitenant deployments)

When connected to a CDB root (Oracle 12c+), the receiver can collect per-PDB metrics by opting in to the oracle.db.pdb attribute. The monitoring user needs SELECT on these views (container-wide):

GRANT SELECT ON V_$CON_SYSSTAT TO <username> CONTAINER=ALL;
GRANT SELECT ON V_$CON_SYSMETRIC TO <username> CONTAINER=ALL;
GRANT SELECT ON V_$CONTAINERS TO <username> CONTAINER=ALL;
GRANT SELECT ON CDB_TABLESPACE_USAGE_METRICS TO <username> CONTAINER=ALL;
GRANT SELECT ON CDB_TABLESPACES TO <username> CONTAINER=ALL;
GRANT SELECT ON CDB_DATA_FILES TO <username> CONTAINER=ALL;  -- only needed for oracledb.tablespace.limit

Users who already hold SELECT_CATALOG_ROLE (commonly granted to monitoring accounts) inherit SELECT on these views and don’t need the explicit grants above. If the required access isn’t present, the receiver detects this at startup and falls back to the single-container query set, emitting instance-wide metrics just as it did before per-PDB support was added. Existing CDB deployments upgrading without adding new grants continue to work unchanged.

Events collection

The following grants are required for event collection. All three event types (db.server.query_sample, db.server.top_query, db.server.session.wait_sample) are disabled by default and must be explicitly enabled in configuration.

All events (shared requirements)

These grants are used by all event types for session context and PDB namespace resolution:

GRANT SELECT ON V_$SESSION TO <username>;
GRANT SELECT ON V_$CONTAINERS TO <username>;     -- PDB/container name (DB_NAMESPACE attribute)

`db.server.query_sample`

Captures currently executing queries and blocking/locking session information:

GRANT SELECT ON V_$SQL TO <username>;            -- SQL text and plan hash
GRANT SELECT ON V_$LOCK TO <username>;           -- Lock type and mode for blocked sessions
GRANT SELECT ON DBA_OBJECTS TO <username>;       -- Blocked object owner and name
GRANT SELECT ON DBA_PROCEDURES TO <username>;    -- Stored procedure metadata (PL/SQL entry point)

`db.server.top_query`

Captures the most expensive queries by elapsed time with execution plan details:

GRANT SELECT ON V_$SQL TO <username>;                    -- Query metrics and text
GRANT SELECT ON V_$SQL_PLAN_STATISTICS_ALL TO <username>; -- Execution plan details
GRANT SELECT ON DBA_PROCEDURES TO <username>;            -- Stored procedure metadata

[!NOTE] In the SQL query plan details, the LAST_*, OUTPUT_ROWS, and STARTS columns are populated only when Oracle is configured to collect execution plan statistics (for example, STATISTICS_LEVEL=ALL or the GATHER_PLAN_STATISTICS hint). Otherwise, these fields will be NULL or empty. Configuring this Oracle instrumentation may introduce additional runtime overhead. Enable it only if you need these runtime execution statistics for query performance analysis.

ALTER SYSTEM SET statistics_level = ALL;

`db.server.session.wait_sample`

Captures per-session wait event statistics from V$SESSION_EVENT:

GRANT SELECT ON V_$SESSION_EVENT TO <username>;  -- Wait event names, counts, and durations

Combined grant statement

For convenience, the complete set of grants required to enable all events:

GRANT SELECT ON V_$SESSION TO <username>;
GRANT SELECT ON V_$SESSION_EVENT TO <username>;
GRANT SELECT ON V_$SQL TO <username>;
GRANT SELECT ON V_$SQL_PLAN_STATISTICS_ALL TO <username>;
GRANT SELECT ON V_$LOCK TO <username>;
GRANT SELECT ON V_$CONTAINERS TO <username>;
GRANT SELECT ON DBA_OBJECTS TO <username>;
GRANT SELECT ON DBA_PROCEDURES TO <username>;

Enabling metrics.

See documentation. You can enable or disable selective metrics. Example:

receivers:
  oracledb:
    datasource: "oracle://otel:password@localhost:51521/XE"
    metrics:
      oracledb.query.cpu_time:
        enabled: false
      oracledb.query.physical_read_requests:
        enabled: true

Enabling events.

The following is a generic configuration that can be used for the default logs and metrics scraped by the Oracle DB receiver.

receivers:
  oracledb:
    collection_interval: 10s                     # interval for overall collection
    datasource: "oracle://otel:password@localhost:51521/XE"
    events:
      db.server.query_sample:
        enabled: true
      db.server.top_query:
        enabled: true
      db.server.session.wait_sample:
        enabled: true
    top_query_collection:                        # this collection exports the most expensive queries as logs
      max_query_sample_count: 1000               # maximum number of samples collected from db to filter the top N
      top_query_count: 200                       # The maximum number of queries (N) for which the metrics would be reported
      collection_interval: 60s                   # collection interval for top query collection specifically
      allowed_comment_keys: [application]        # keys to extract from leading SQL comments (see SQL Comment Extraction below)
    query_sample_collection:                     # this collection exports the currently (relate to the query time) executing queries as logs
      max_rows_per_query: 100                     # the maximum number of samples to bre reported.
      allowed_comment_keys: [application]        # keys to extract from leading SQL comments (see SQL Comment Extraction below)
    session_wait_event_collection:               # this collection exports per-session wait event statistics from v$session_event as logs
      max_rows_per_query: 100                    # the maximum number of session wait event rows to be reported                 

SQL Comment Extraction

When the db.server.query_sample and/or db.server.top_query events are enabled, the receiver can extract key-value pairs from leading SQL block comments (/* key=value */) and emit them as the db.query.comment_tags attribute on the corresponding logs. This behavior is controlled by the allowed_comment_keys option, which can be set independently under top_query_collection and query_sample_collection:

allowed_comment_keys (default = []): A list of comment keys to extract. For each enabled collection, only keys present in this allowlist are extracted from the leading SQL comment and included (as comma-separated key=value pairs) in the db.query.comment_tags attribute.

Extraction is disabled unless explicitly configured:

When allowed_comment_keys is empty or unset, no comments are extracted.
Only keys included in the allowlist are emitted; all other comment keys are ignored.
Only leading block comments are parsed; comments elsewhere in the query are ignored.

Example:

receivers:
  oracledb:
    datasource: "oracle://otel:password@localhost:51521/XE"
    events:
      db.server.query_sample:
        enabled: true
      db.server.top_query:
        enabled: true
    top_query_collection:
      allowed_comment_keys: [application, team]
    query_sample_collection:
      allowed_comment_keys: [application, team]

Given a query such as /* application=exampleApp,team=payments */ SELECT * FROM users, the emitted log record will include db.query.comment_tags set to application=exampleApp,team=payments. When multiple keys are extracted, they are emitted as a comma-separated list of key=value pairs. See documentation for details on the db.query.comment_tags attribute.

Metrics

Metric Name	Description	Unit	Type	Attributes
❌ `oracledb.buffer.inspected`	Number of buffers inspected from the end of the LRU queue while a process searched for a reusable buffer, grouped by buffer state.	{buffer}	Counter	oracledb.buffer.state
❌ `oracledb.buffer.requests`	Number of times a reusable or free buffer was requested to create or load a block.	{request}	Counter
❌ `oracledb.buffer_cache.block.changes`	Number of changes that were part of an update or delete operation made to blocks in the buffer cache.	{change}	Counter
❌ `oracledb.buffer_cache.block.changes.rate`	Rate of changes applied to blocks in the buffer cache.	{change}/s	Gauge	oracle.db.pdb
❌ `oracledb.buffer_cache.block.gets`	Number of current-mode block gets satisfied from the buffer cache. Distinct from oracledb.db_block_gets, which counts all current-mode block gets requested regardless of where they are satisfied.	{get}	Counter
❌ `oracledb.buffer_cache.utilization`	Fraction of logical reads served from the buffer cache without physical I/O, as computed by Oracle V$SYSMETRIC (% (LogRead - PhyRead)/LogRead).	%	Gauge	oracle.db.pdb
❌ `oracledb.call.count`	Total count of calls issued to the database.	{call}	Counter	oracledb.call.type
❌ `oracledb.call.recursive.cpu.time`	Total CPU time spent on recursive (internal) calls.	s	Counter
❌ `oracledb.checkpoint.buffers`	Number of buffers written by the Database Writer (DBWR) for checkpoints.	{buffer}	Counter
❌ `oracledb.checkpoint.completed`	Number of checkpoints completed by the Database Writer (DBWR).	{checkpoint}	Counter
❌ `oracledb.consistent_gets`	Number of times a consistent read was requested for a block from the buffer cache.	{gets}	Counter	oracle.db.pdb
❌ `oracledb.cpu.usage.rate`	CPU consumption rate, in CPU-seconds used per second.	1	Gauge	oracle.db.pdb
✅ `oracledb.cpu_time`	Cumulative CPU time, in seconds	s	Counter	oracle.db.pdb
❌ `oracledb.cursor.cache.hits`	Total count of session cursor cache hits, where an existing cached cursor is reused to avoid a soft parse.	{hit}	Counter
❌ `oracledb.cursor.cache.size`	Number of cursors currently held in the session cursor cache.	{cursor}	Gauge
❌ `oracledb.cursor.cache.utilization`	Percentage of cursor executions that reused a cursor in the session cursor cache.	%	Gauge	oracle.db.pdb
❌ `oracledb.cursor.open`	Number of currently open cursors in the Oracle instance.	{cursor}	Gauge
❌ `oracledb.cursor.open.rate`	Rate of cursors opened.	{cursor}/s	Gauge	oracle.db.pdb
❌ `oracledb.data_dictionary.hit_ratio`	Data dictionary cache hit ratio from v$rowcache.	%	Gauge
❌ `oracledb.database.cpu.utilization`	Fraction of total database time spent on CPU, as computed by Oracle V$SYSMETRIC (% Cpu/DB_Time).	%	Gauge	oracle.db.pdb
❌ `oracledb.database.wait.utilization`	Fraction of total database time spent waiting on I/O, locks, or latches, as computed by Oracle V$SYSMETRIC (% Wait/DB_Time).	%	Gauge	oracle.db.pdb
❌ `oracledb.db.time`	Total wall-clock time spent in database calls.	s	Counter	oracledb.session.type
❌ `oracledb.db_block_gets`	Number of times a current block was requested from the buffer cache.	{gets}	Counter	oracle.db.pdb
❌ `oracledb.ddl_statements_parallelized`	Number of DDL statements that were executed in parallel	{statements}	Counter	oracle.db.pdb
✅ `oracledb.dml_locks.limit`	Maximum limit of active DML (Data Manipulation Language) locks, -1 if unlimited.	{locks}	Gauge
✅ `oracledb.dml_locks.usage`	Current count of active DML (Data Manipulation Language) locks.	{locks}	Gauge
❌ `oracledb.dml_statements_parallelized`	Number of DML statements that were executed in parallel	{statements}	Counter	oracle.db.pdb
❌ `oracledb.enqueue.deadlocks.rate`	Rate of enqueue deadlocks.	{deadlock}/s	Gauge	oracle.db.pdb
❌ `oracledb.enqueue.operations`	Total count of enqueue (lock) operations.	{operation}	Counter	oracledb.enqueue.type
❌ `oracledb.enqueue.timeouts.rate`	Rate of enqueue timeouts.	{timeout}/s	Gauge	oracle.db.pdb
✅ `oracledb.enqueue_deadlocks`	Total number of deadlocks between table or row locks in different sessions.	{deadlocks}	Counter	oracle.db.pdb
✅ `oracledb.enqueue_locks.limit`	Maximum limit of active enqueue locks, -1 if unlimited.	{locks}	Gauge
✅ `oracledb.enqueue_locks.usage`	Current count of active enqueue locks.	{locks}	Gauge
✅ `oracledb.enqueue_resources.limit`	Maximum limit of active enqueue resources, -1 if unlimited.	{resources}	Gauge
✅ `oracledb.enqueue_resources.usage`	Current count of active enqueue resources.	{resources}	Gauge
✅ `oracledb.exchange_deadlocks`	Number of times that a process detected a potential deadlock when exchanging two buffers and raised an internal, restartable error. Index scans are the only operations that perform exchanges.	{deadlocks}	Counter	oracle.db.pdb
❌ `oracledb.execution.utilization`	Fraction of executions that did not require a parse, as computed by Oracle V$SYSMETRIC (% (ExecWOParse/TotalExec)). High values indicate good cursor reuse.	%	Gauge	oracledb.parse.type, oracle.db.pdb
✅ `oracledb.executions`	Total number of calls (user and recursive) that executed SQL statements	{executions}	Counter	oracle.db.pdb
❌ `oracledb.executions.rate`	Rate of SQL statement executions.	{execution}/s	Gauge	oracle.db.pdb
❌ `oracledb.gc.current_block.time`	Cumulative time spent transferring current blocks between instances over RAC cache fusion.	s	Counter	network.io.direction
✅ `oracledb.hard_parses`	Number of hard parses	{parses}	Counter	oracle.db.pdb
❌ `oracledb.hard_parses.rate`	Rate of hard parses.	{parse}/s	Gauge	oracle.db.pdb
❌ `oracledb.host.cpu.usage.rate`	Host CPU consumption rate across all cores, in CPU-seconds used per second.	1	Gauge
❌ `oracledb.host.cpu.utilization`	Fraction of host CPU time in use, as computed by Oracle V$SYSMETRIC (% Busy/(Idle+Busy)).	%	Gauge	oracle.db.pdb
❌ `oracledb.io.requests.rate`	Rate of I/O requests issued by the database.	{request}/s	Gauge
❌ `oracledb.io.single_block.read.latency`	Average latency of a synchronous single-block read.	s	Gauge
❌ `oracledb.io.throughput.rate`	Rate of I/O bytes transferred by the database.	By/s	Gauge
❌ `oracledb.jvm.memory.committed`	Committed (total) size of Oracle’s in-database JVM (OJVM) call heap.	By	Gauge
❌ `oracledb.jvm.memory.live`	Size of live objects in Oracle’s in-database JVM (OJVM) call heap.	By	Gauge
❌ `oracledb.jvm.memory.used`	Used size of Oracle’s in-database JVM (OJVM) call heap.	By	Gauge
❌ `oracledb.library_cache.utilization`	Fraction of library cache pin requests that found the object already cached, as computed by Oracle V$SYSMETRIC (% Hits/Pins).	%	Gauge	oracle.db.pdb
❌ `oracledb.lob.operations`	Total count of LOB (large object) I/O operations.	{operation}	Counter	disk.io.direction
❌ `oracledb.lock.time`	Cumulative time spent on transaction lock activity.	s	Counter	oracle.db.pdb, oracledb.session.type
✅ `oracledb.logical_reads`	Number of logical reads	{reads}	Counter	oracle.db.pdb
❌ `oracledb.logical_reads.rate`	Rate of logical reads performed by the database.	{read}/s	Gauge	oracle.db.pdb
❌ `oracledb.logons`	Number of logon operations	{operation}	Counter	oracle.db.pdb
❌ `oracledb.logons.rate`	Rate of logon operations.	{logon}/s	Gauge	oracle.db.pdb
❌ `oracledb.os.swaps`	Number of OS swap operations.	{swap}	Counter
❌ `oracledb.parallel_operations_downgraded_1_to_25_pct`	Number of times parallel execution was requested and the degree of parallelism was reduced down to 1-25% because of insufficient parallel execution servers	{executions}	Counter	oracle.db.pdb
❌ `oracledb.parallel_operations_downgraded_25_to_50_pct`	Number of times parallel execution was requested and the degree of parallelism was reduced down to 25-50% because of insufficient parallel execution servers	{executions}	Counter	oracle.db.pdb
❌ `oracledb.parallel_operations_downgraded_50_to_75_pct`	Number of times parallel execution was requested and the degree of parallelism was reduced down to 50-75% because of insufficient parallel execution servers	{executions}	Counter	oracle.db.pdb
❌ `oracledb.parallel_operations_downgraded_75_to_99_pct`	Number of times parallel execution was requested and the degree of parallelism was reduced down to 75-99% because of insufficient parallel execution servers	{executions}	Counter	oracle.db.pdb
❌ `oracledb.parallel_operations_downgraded_to_serial`	Number of times parallel execution was requested but execution was serial because of insufficient parallel execution servers	{executions}	Counter	oracle.db.pdb
❌ `oracledb.parallel_operations_not_downgraded`	Number of times parallel execution was executed at the requested degree of parallelism	{executions}	Counter	oracle.db.pdb
❌ `oracledb.parse.cpu.time`	Total CPU time spent on SQL parsing.	s	Counter
❌ `oracledb.parse.elapsed.time`	Total wall-clock time spent on SQL parsing.	s	Counter
❌ `oracledb.parse.rate`	Rate of parse operations per second broken down by result, as computed by Oracle V$SYSMETRIC (e.g., Parse Failure Count Per Sec).	{parses}/s	Gauge	oracledb.parse.result, oracle.db.pdb
❌ `oracledb.parse.utilization`	Fraction of parse calls that were soft parses, as computed by Oracle V$SYSMETRIC (% SoftParses/TotalParses). High values indicate good cursor reuse.	%	Gauge	oracle.db.pdb
✅ `oracledb.parse_calls`	Total number of parse calls.	{parses}	Counter	oracle.db.pdb
❌ `oracledb.pga.cache.utilization`	Percentage of PGA work-area memory requests satisfied without spilling to temporary disk.	%	Gauge
✅ `oracledb.pga_memory`	Session PGA (Program Global Area) memory	By	Counter	oracle.db.pdb
❌ `oracledb.physical_io.cache_writes`	Number of physical writes from the buffer cache to disk by DBWR. Sourced from v$sysstat name physical writes from cache.	{writes}	Counter	oracle.db.pdb
❌ `oracledb.physical_io.requests`	Number of physical I/O requests issued to storage. Sourced from v$sysstat names physical read/write total IO requests (disk.io.block_size=all) and physical read/write total multi block requests (disk.io.block_size=multi).	{requests}	Counter	disk.io.direction, disk.io.block_size, oracle.db.pdb
❌ `oracledb.physical_io.requests.rate`	Rate of physical I/O requests issued to storage.	{request}/s	Gauge	disk.io.direction, oracle.db.pdb
❌ `oracledb.physical_io.transferred`	Total physical I/O bytes transferred between Oracle and storage. Sums across all data files. Sourced from v$sysstat names physical read/write bytes (disk.io.type=buffered) and physical read/write total bytes (disk.io.type=total).	By	Counter	disk.io.direction, disk.io.type, oracle.db.pdb
❌ `oracledb.physical_io.transferred.rate`	Rate of physical I/O bytes transferred between Oracle and storage.	By/s	Gauge	disk.io.direction, oracle.db.pdb
❌ `oracledb.physical_operations.rate`	Rate of physical read and write operations performed by the database.	{operation}/s	Gauge	disk.io.direction, oracle.db.pdb
❌ `oracledb.physical_read_io_requests`	Number of read requests for application activity	{requests}	Counter	oracle.db.pdb
✅ `oracledb.physical_reads`	Number of physical reads	{reads}	Counter	oracle.db.pdb
❌ `oracledb.physical_reads_direct`	Number of reads directly from disk, bypassing the buffer cache	{reads}	Counter	oracle.db.pdb
❌ `oracledb.physical_write_io_requests`	Number of write requests for application activity	{requests}	Counter	oracle.db.pdb
❌ `oracledb.physical_writes`	Number of physical writes	{writes}	Counter	oracle.db.pdb
❌ `oracledb.physical_writes_direct`	Number of writes directly to disk, bypassing the buffer cache	{writes}	Counter	oracle.db.pdb
✅ `oracledb.processes.limit`	Maximum limit of active processes, -1 if unlimited.	{processes}	Gauge
✅ `oracledb.processes.usage`	Current count of active processes.	{processes}	Gauge
❌ `oracledb.queries_parallelized`	Number of SELECT statements executed in parallel	{queries}	Counter	oracle.db.pdb
❌ `oracledb.recovery.blocks`	Number of blocks read during instance or media recovery.	{block}	Counter
❌ `oracledb.recycle_bin.limit`	Total size of the recycle bin.	By	Gauge
❌ `oracledb.redo.blocks`	Number of redo blocks moved between the redo log and storage.	{block}	Counter	disk.io.direction
❌ `oracledb.redo.operations`	Number of redo I/O operations.	{operation}	Counter	disk.io.direction
❌ `oracledb.redo.requests`	Number of times a process requested space in the redo log buffer and had to wait.	{request}	Counter	oracledb.redo.request.type
❌ `oracledb.redo.retries`	Number of times a process waited and retried to allocate space in the redo buffer.	{retry}	Counter	oracledb.redo.retry.type
❌ `oracledb.redo.size`	Amount of redo generated.	By	Counter
❌ `oracledb.redo.size.rate`	Rate of redo bytes generated by the database.	By/s	Gauge	oracle.db.pdb
❌ `oracledb.redo.time`	Time spent in each phase of the redo pipeline.	s	Counter	oracledb.redo.type
❌ `oracledb.redo_allocation.utilization`	Fraction of redo allocations that succeeded without space contention, as computed by Oracle V$SYSMETRIC (% (#Redo - RedoSpaceReq)/#Redo).	%	Gauge	oracle.db.pdb
❌ `oracledb.scan.count`	Total count of scan operations.	{operation}	Counter	oracledb.scan.type, oracledb.scan.mode
❌ `oracledb.scan.table.rows`	Total number of rows returned by full-table scans.	{row}	Counter
❌ `oracledb.session.average`	Average number of sessions over the metric interval.	{session}	Gauge	session_status, oracle.db.pdb
❌ `oracledb.session.stored_procedure.memory`	Memory currently allocated for stored procedures in the session.	By	Gauge	oracle.db.pdb
❌ `oracledb.session.wait.time`	Cumulative time sessions spent in waits.	s	Counter	oracledb.session.wait.state, oracle.db.pdb
❌ `oracledb.session.waits`	Cumulative number of waits across sessions.	{wait}	Counter	oracledb.session.wait.state, oracle.db.pdb
✅ `oracledb.sessions.limit`	Maximum limit of active sessions, -1 if unlimited.	{sessions}	Gauge
✅ `oracledb.sessions.usage`	Count of active sessions.	{sessions}	Gauge	session_type, session_status, oracle.db.pdb
❌ `oracledb.sga.limit`	Maximum size of the System Global Area (SGA).	By	Gauge
❌ `oracledb.sga.usage`	Size of each component of the System Global Area (SGA).	By	Gauge	oracledb.sga.component.name
❌ `oracledb.shared_pool.utilization`	Fraction of the shared pool that is currently free, as computed by Oracle V$SYSMETRIC (% Free/Total). Low values indicate shared pool pressure.	%	Gauge	oracle.db.pdb
❌ `oracledb.smon.posts`	Number of times SMON was posted to perform recovery.	{post}	Counter	oracledb.smon.type
❌ `oracledb.sort.operations`	Total count of sort operations.	{operation}	Counter	oracledb.sort.type
❌ `oracledb.sort.ratio`	Fraction of sorts performed in memory vs disk, as computed by Oracle V$SYSMETRIC (% MemSort/(MemSort + DiskSort)). Low values indicate PGA memory pressure.	1	Gauge	oracledb.sort.type, oracle.db.pdb
❌ `oracledb.sort.rows`	Total number of rows sorted across all sort operations.	{row}	Counter
❌ `oracledb.sql_service.response.duration`	Average SQL service response time in seconds, converted from centiseconds as reported by Oracle V$SYSMETRIC (CentiSeconds Per Call).	s	Gauge	oracle.db.pdb
❌ `oracledb.sqlnet.io.transferred`	Bytes transferred via SQLNet between Oracle and clients/dblinks. Sourced from v$sysstat names bytes received/sent via SQLNet from/to client/dblink.	By	Counter	network.io.direction, destination.type, oracle.db.pdb
❌ `oracledb.storage.usage`	Used database storage size from dba_data_files and dba_free_space.	By	Gauge
❌ `oracledb.storage.utilization`	Fraction of allocated database storage that is used.	1	Gauge
❌ `oracledb.system.cpu.count`	Number of CPUs or processors available to the Oracle server, as reported by the operating system.	{cpu}	Gauge
❌ `oracledb.system.memory.limit`	Total number of bytes of physical memory on the host running the Oracle server.	By	Gauge
❌ `oracledb.system.process.count`	Current number of processes that are either running or in the ready state, waiting to be selected by the operating-system scheduler to run.	{process}	Gauge
❌ `oracledb.tablespace.limit`	Maximum autoextend size of tablespace in bytes. Returns 0 for temporary tablespaces and tablespaces without autoextend enabled.	By	Gauge	tablespace_name, oracle.db.pdb
❌ `oracledb.tablespace.status`	Current status of tablespaces, broken down by state. A timeseries is produced for every possible value of oracledb.tablespace.state; the value is 1 for a tablespace’s current state, and 0 for all other states.	{tablespace}	UpDownCounter	tablespace_name, oracledb.tablespace.state, oracle.db.pdb
❌ `oracledb.tablespace.utilization`	Fraction of tablespace currently in use, expressed as a value between 0 and 1.	1	Gauge	tablespace_name, oracle.db.pdb
✅ `oracledb.tablespace_size.limit`	Maximum size of tablespace in bytes, -1 if unlimited.	By	Gauge	tablespace_name, oracle.db.pdb
✅ `oracledb.tablespace_size.usage`	Used tablespace in bytes.	By	Gauge	tablespace_name, oracle.db.pdb
❌ `oracledb.transaction.response.time`	Average response time per transaction.	s	Gauge	oracle.db.pdb
❌ `oracledb.transaction.rollbacks`	Total number of transactions rolled back.	{rollback}	Counter	oracle.db.pdb
✅ `oracledb.transactions.limit`	Maximum limit of active transactions, -1 if unlimited.	{transactions}	Gauge
❌ `oracledb.transactions.rate`	Rate of user transactions.	{transaction}/s	Gauge	oracledb.transaction.type, oracle.db.pdb
✅ `oracledb.transactions.usage`	Current count of active transactions.	{transactions}	Gauge
✅ `oracledb.user_commits`	Number of user commits. When a user commits a transaction, the redo generated that reflects the changes made to database blocks must be written to disk. Commits often represent the closest thing to a user transaction rate.	{commits}	Counter	oracle.db.pdb
✅ `oracledb.user_rollbacks`	Number of times users manually issue the ROLLBACK statement or an error occurs during a user’s transactions	1	Counter	oracle.db.pdb

Attributes

Attribute Name	Description	Type	Values
`client.address`	Hostname or address of the client.	string
`client.port`	TCP port used by the client.	int
`db.namespace`	The database name.	string
`db.query.comment_tags`	Filtered SQL query comments extracted from leading block comments. Contains comma-separated key=value pairs for keys specified in allowed_comment_keys configuration. Used for correlation with APM traces.	string
`db.query.text`	The text of the database query being executed.	string
`db.server.name`	The name of the server hosting the database.	string
`db.system.name`	The database management system (DBMS) product as identified by the client instrumentation.	string
`destination.type`	Type of the SQL*Net destination endpoint (client application or remote database link).	string	`client`, `dblink`
`disk.io.block_size`	Multi-block vs single-block (all) I/O request grouping.	string	`all`, `multi`
`disk.io.direction`	Direction of the storage I/O operation.	string	`read`, `write`
`disk.io.type`	Whether the I/O bytes are buffered (cache-mediated) or total (raw transfer count).	string	`buffered`, `total`
`network.io.direction`	Direction of the network transfer.	string	`receive`, `transmit`
`network.peer.address`	IP address of the peer client.	string
`network.peer.port`	TCP port used by the peer client.	int
`oracle.db.pdb`	The name of the pluggable database (PDB) the data point belongs to. Emit one data point per PDB on CDB-root connections and one per direct-PDB connection; empty otherwise. When disabled, per-PDB collection is skipped and each metric emits a single instance-wide data point.	string
`oracle.db.service`	The Oracle service name associated with the database connection.	string
`oracledb.application_wait_time`	The total time (in seconds) a query spent waiting on the application before it could proceed with execution (reporting delta).	double
`oracledb.blocking.blocker.root_sid`	The session ID (SID) of the root/head blocker at the top of the blocking chain. Empty string when there is no blocking.	string
`oracledb.blocking.blocker.sid`	The session ID (SID) of the immediate blocker of this session. Empty string when the session is not blocked.	string
`oracledb.blocking.blocker.state`	The status of the blocking session relationship (e.g. VALID, NOT IN WAIT, GLOBAL, NO HOLDER, UNKNOWN).	string
`oracledb.blocking.lock.mode`	The lock mode being requested by the blocked session (e.g., ROW SHARE, ROW EXCLUSIVE, SHARE, SHARE ROW EXCLUSIVE, EXCLUSIVE). Empty when not waiting on a lock.	string
`oracledb.blocking.lock.type`	The type of enqueue lock the session is waiting on, extracted from the wait event (e.g., TX for row lock, TM for table lock). Empty when not waiting on a lock.	string
`oracledb.blocking.object.name`	The name of the database object the session is waiting to lock. Empty when no object lock wait is active.	string
`oracledb.blocking.object.owner`	The owner (schema) of the database object the session is waiting to lock. Empty when no object lock wait is active.	string
`oracledb.blocking.start_time`	Estimated UTC timestamp of when the blocking wait began, derived from SYSDATE - SECONDS_IN_WAIT. RFC3339 format.	string
`oracledb.blocking.wait_duration`	The number of seconds this session has been waiting for the current wait event.	int
`oracledb.buffer.state`	The state of a buffer encountered while inspecting the LRU queue for a reusable buffer (free = a reusable buffer that was skipped; dirty = a dirty buffer found).	string	`free`, `dirty`
`oracledb.buffer_gets`	Number of logical reads (i.e., buffer cache accesses) performed by a query (reporting delta).	int
`oracledb.call.type`	Type of call reported by Oracle.	string	`recursive`, `user`
`oracledb.child_address`	Address of the child cursor.	string
`oracledb.child_number`	The child number of the query.	string
`oracledb.cluster_wait_time`	Total time (in seconds) that a query waited due to Oracle Real Application Clusters (RAC) coordination (reporting delta).	double
`oracledb.command_type`	Command type of the query.	int
`oracledb.concurrency_wait_time`	Total time (in seconds) a query spent waiting on concurrency-related events (reporting delta).	double
`oracledb.cpu_time`	Total time (in seconds) that the CPU spent actively processing a query, excluding time spent waiting (reporting delta).	double
`oracledb.direct_reads`	The number of direct path reads performed by a query — i.e., data blocks read directly from disk into the session’s memory (reporting delta).	int
`oracledb.direct_writes`	The number of direct path write operations, where data is written directly to disk from user memory (reporting delta).	int
`oracledb.disk_reads`	The number of physical reads a query performs — that is, the number of data blocks read from disk (reporting delta).	int
`oracledb.duration_sec`	Total time taken by a database query to execute.	double
`oracledb.elapsed_time`	The total time (in seconds) taken by a query from start to finish, including CPU time and all types of waits (reporting delta).	double
`oracledb.enqueue.type`	Type of enqueue (lock) operation reported by Oracle.	string	`conversions`, `releases`, `requests`, `timeouts`, `waits`
`oracledb.event`	The specific wait event that a query or session is currently experiencing.	string
`oracledb.executions`	The number of times a specific SQL query has been executed (reporting delta).	int
`oracledb.module`	Logical module name of the client application that initiated a query or session.	string
`oracledb.osuser`	Name of the operating system user that initiated or is running the Oracle database session.	string
`oracledb.parse.result`	Result of a parse operation (e.g., failure).	string	`failure`
`oracledb.parse.type`	Type of parse operation (e.g., soft).	string	`soft`
`oracledb.physical_read_bytes`	The total number of bytes read from disk by a query (reporting delta).	int
`oracledb.physical_read_requests`	The number of physical I/O read operations performed by a query (reporting delta).	int
`oracledb.physical_write_bytes`	The total number of bytes written to disk by a query (reporting delta).	int
`oracledb.physical_write_requests`	The number of times a query requested to write data to disk (reporting delta).	int
`oracledb.plan.first_load`	Time at which the plan was first loaded into the library cache, in the server’s local timezone. Format: YYYY-MM-DD/HH:MM:SS	string
`oracledb.plan.last_load`	Plan load time in the server’s local timezone. Format: YYYY-MM-DD/HH:MM:SS	string
`oracledb.plan_hash_value`	Binary hash value calculated on the query execution plan and used to identify similar query execution plans, reported in the HEX format.	string
`oracledb.procedure_execution_count`	The number of times the stored procedure has been executed, derived from the minimum statement execution count across all statements in the procedure (reporting delta). Please note, this is best effort and may not be accurate in some scenarios. Use with caution.	int
`oracledb.procedure_id`	The identifier of the stored procedure or function being executed by the query.	int
`oracledb.procedure_name`	Name of the database object that a query is accessing.	string
`oracledb.procedure_type`	Type of the database object that a query is accessing.	string
`oracledb.process`	The operating system process ID (PID) associated with a session.	string
`oracledb.program`	Name of the client program or tool that initiated the Oracle database session.	string
`oracledb.query.started`	The timestamp when the SQL statement started execution, in ISO 8601 format (UTC).	string
`oracledb.query.wait_time`	The wait time in seconds. If the session is currently waiting, the value is the time spent waiting in the current wait. Returns 0 if the session is not currently waiting.	double
`oracledb.query_plan`	The query execution plan used by the SQL Server.	string
`oracledb.redo.request.type`	The type of redo log buffer space request.	string	`log_space`
`oracledb.redo.retry.type`	The type of redo buffer allocation retry.	string	`buffer_allocation`
`oracledb.redo.type`	The phase of the redo pipeline that a redo time measurement is attributed to.	string	`write`, `log_space_wait`, `sync`
`oracledb.rows_processed`	The total number of rows that a query has read, returned, or affected during its execution (reporting delta).	int
`oracledb.scan.mode`	Execution mode of the scan reported by Oracle.	string	`direct_read`, `full`, `long_tables`, `rowid_ranges`
`oracledb.scan.type`	Type of scan operation reported by Oracle.	string	`index_fast_full`, `table`
`oracledb.schemaname`	Oracle schema under which SQL statements are being executed	string
`oracledb.serial`	Serial number associated with a session.	string
`oracledb.session.duration`	The total time in seconds that the session has been connected.	double
`oracledb.session.started`	The timestamp when the session logged on, in ISO 8601 format (UTC).	string
`oracledb.session.type`	Class of session the activity is attributed to.	string	`background`, `foreground`
`oracledb.session.wait.state`	Whether the session wait time/count is for idle or non-idle wait events.	string	`non_idle`
`oracledb.sga.component.name`	Name of the SGA component.	string	`buffer_cache`, `data_transfer_cache`, `fixed_sga`, `in_memory_area`, `java_pool`, `large_pool`, `redo_buffers`, `shared_io_pool`, `shared_pool`, `streams_pool`
`oracledb.sid`	ID of the Oracle Server session.	string
`oracledb.smon.type`	Type of recovery SMON was posted to perform.	string	`instance`, `transaction`
`oracledb.sort.type`	Type of sort operation (e.g., memory, disk).	string	`disk`, `memory`
`oracledb.sql_id`	The SQL ID of the query.	string
`oracledb.state`	Current state of the query or the session executing it.	string
`oracledb.status`	Execution state or result of a database query or session.	string
`oracledb.tablespace.state`	Tablespace state as reported by Oracle (e.g. online, offline, read only)	string	`online`, `offline`, `read only`
`oracledb.transaction.type`	The type of user transaction.	string	`commit`, `rollback`
`oracledb.user_io_wait_time`	The total time (in seconds) a query spent waiting for user I/O operations—such as reading or writing data to disk or network file systems (reporting delta).	double
`oracledb.wait.count`	Number of times the session has waited on the wait event.	int
`oracledb.wait.duration`	Total time waited in seconds for the wait event.	double
`oracledb.wait.timeouts`	Number of the session’s waits on the wait event that timed out.	int
`oracledb.wait_class`	The category of wait events a query or session is currently experiencing in Oracle Database.	string
`session_status`	Session status	string
`session_type`	Session type	string
`tablespace_name`	Tablespace name	string
`user.name`	Database user name under which a session is connected to	string

Resource Attributes

Attribute Name	Description	Type	Enabled
`host.name`	The host name of Oracle Server	string	✅
`oracle.db.hosting_type`	The hosting environment of the Oracle instance. One of “self-managed”, “rds”, or “oci”.	string	✅
`oracle.db.open_mode`	The open mode of the Oracle database (e.g. “READ WRITE”, “READ ONLY”, “MOUNTED”).	string	✅
`oracle.db.role`	The database role of the Oracle instance (e.g. “PRIMARY”, “PHYSICAL STANDBY”).	string	✅
`oracle.db.version`	The Oracle Database version string.	string	✅
`oracledb.instance.name`	The name of the instance that data is coming from.	string	✅
`service.instance.id`	A unique identifier of the Oracle DB instance in the format host:port/serviceName. (defaults to ‘unknown:1521’, in case of error in generating this value)	string	✅
`service.name`	Logical name of the service. When enabled, defaults to unknown_service:oracle.	string	❌
`service.namespace`	Logical namespace for the service (for example team or environment). When enabled, defaults to an empty string until set via configuration.	string	❌

Configuration

Example Configuration

oracledb:
  # driver name: oracle
  endpoint: localhost:51521
  password: password
  service: XE
  username: otel
  # Refer to Oracle Go Driver go_ora documentation for full connection string options
  datasource: "oracle://otel:password@localhost:51521/XE"
  top_query_collection:
    max_query_sample_count: 222
    top_query_count: 200
  metrics:
    oracledb.exchange_deadlocks:
      enabled: false
    oracledb.tablespace_size.usage:
      enabled: false
  events:
    db.server.top_query:
      enabled: true
    db.server.query_sample:
      enabled: true

Last generated: 2026-08-24

​Oracledb Receiver

​Supported Telemetry

​Overview

​Getting Started

​Primary Configuration Option

​Secondary Configuration Option

​Optional Configuration Options

​Permissions

​Instance detection

​Hosting type detection (Oracle >=19c only)

​Metrics collection

​Per-PDB metrics (CDB multitenant deployments)

​Events collection

​All events (shared requirements)

​db.server.query_sample

​db.server.top_query

​db.server.session.wait_sample

​Combined grant statement

​Enabling metrics.

​Enabling events.

​SQL Comment Extraction

​Metrics

​Attributes

​Resource Attributes

​Configuration

​Example Configuration

Oracledb Receiver

Supported Telemetry

Overview

Getting Started

Primary Configuration Option

Secondary Configuration Option

Optional Configuration Options

Permissions

Instance detection

Hosting type detection (Oracle >=19c only)

Metrics collection

Per-PDB metrics (CDB multitenant deployments)

Events collection

All events (shared requirements)

`db.server.query_sample`

`db.server.top_query`

`db.server.session.wait_sample`

Combined grant statement

Enabling metrics.

Enabling events.

SQL Comment Extraction

Metrics

Attributes

Resource Attributes

Configuration

Example Configuration