Event tracing in Oracle is a mechanism of capturing information about a particular event or problem in the database such as a database slowness or a performance issue. This trace information that is captured provides valuable diagnostic information that can then be analyzed for trouble shooting, performance tuning, security auditing etc. This involves the generation of a trace file which is converted into a readable format using the the tkprof utility.
An event id is associated for a particular event which has to be troubleshooted or debugged. Of these, the most important event for a PLSQL developer is the 10046 trace event.
The command for generating the oracle trace file is
ALTER SESSION SET EVENTS '10046 trace name context forever, level {N}';
N = 1 - enable the standard SQL_TRACE facility. This is no different than setting SQL_TRACE=true
N = 4 - enable standard SQL_TRACE but also capture bind variable values in the trace file
N = 8 - enable standard SQL_TRACE but also capture wait events at the query level into the trace file
N = 12 - enable standard SQL_TRACE and include both bind variables and waits
N = 32 – Never write row source statistics (STAT lines) to the trace file (equivalent to plan_stat=NEVER)
N = 64 – Row source statistics (STAT lines) are written to the trace file for every minute of DB time consumed by the SQL statement (equivalent to plan_stat=ADAPTIVE) (11.2.0.2/patch 8328200 only).
Level 8 (with waits) is the default choice, because it gives the wait event statistics (Number of Times Waited, Maximum Wait Time and Total Wait Time) for each SQL.
This trace event is very useful for performance troubleshooting, particularly for SQL and PLSQL. It captures information of SQL execution, including wait events, bind variables and execution plans. This data can then be analyzed for identifying performance bottlenecks in SQL and PLSQL code. This event is also useful for monitoring changes to your database schema as it provides information about when and how objects like tables, stored procedures, views, triggers etc have been created.
Additional useful information about tkprof usage can be obtained by typing tkprof (Enter) on the cmd line.
C:\Users\winni>tkprof
Usage: tkprof tracefile outputfile [explain= ] [table= ]
[print= ] [insert= ] [sys= ] [sort= ]
table=schema.tablename Use 'schema.tablename' with 'explain=' option.
explain=user/password Connect to ORACLE and issue EXPLAIN PLAN.
print=integer List only the first 'integer' SQL statements.
pdbtrace=user/password Connect to ORACLE to retrieve SQL trace records.
aggregate=yes|no
insert=filename List SQL statements and data inside INSERT statements.
sys=no TKPROF does not list SQL statements run as user SYS.
record=filename Record non-recursive statements found in the trace file.
waits=yes|no Record summary for any wait events found in the trace file.
sort=option Set of zero or more of the following sort options:
prscnt number of times parse was called
prscpu cpu time parsing
prsela elapsed time parsing
prsdsk number of disk reads during parse
prsqry number of buffers for consistent read during parse
prscu number of buffers for current read during parse
prsmis number of misses in library cache during parse
execnt number of execute was called
execpu cpu time spent executing
exeela elapsed time executing
exedsk number of disk reads during execute
exeqry number of buffers for consistent read during execute
execu number of buffers for current read during execute
exerow number of rows processed during execute
exemis number of library cache misses during execute
fchcnt number of times fetch was called
fchcpu cpu time spent fetching
fchela elapsed time fetching
fchdsk number of disk reads during fetch
fchqry number of buffers for consistent read during fetch
fchcu number of buffers for current read during fetch
fchrow number of rows fetched
userid userid of user that parsed the cursor
From the sort options, two notable attributes for the tkprof for identifying query performance issues are
- exeela - elapsed time executing. This is useful for identifying dmls (inserts, updates, deletes) taking time. The tkprof output will be sorted on execution time, from highest to lowest.
- fchela - elapsed time fetching. This is useful for identifying select queries taking time. The tkprof output will be sorted on select fetch time, from highest to lowest.
Below is an example of tracing a session and using tkprof to analyze the trace file output. A sample command to sort on query fetches taking time.
tkprof xe_ora_14232_MY_TEST_SESSION.trc xe_ora_14232_MY_TEST_SESSION.txt explain=HR/HR@xepdb1 table=sys.plan_table sys=no waits=yes sort-fchela
Start tracing the session with the following commands. You can give an identifier to the trace file
ALTER SESSION SET EVENTS '10046 trace name context forever, level 8';
ALTER SESSION SET TRACEFILE_IDENTIFIER = "MY_TEST_SESSION_TRACE";
We now create some sample DDL and DML statements.
CREATE TABLE cal_cntr
(
id NUMBER,
cal_date DATE,
name VARCHAR2(10)
);
ALTER TABLE EMPLOYEES MODIFY (SALARY NUMBER(22,6));
declare
v_count number;
emp_id number := 100;
begin
v_count:=0;
for i in 1..100 loop
for j in 1..25 loop
v_count:= v_count+1;
insert into cal_cntr values (v_count, sysdate-i, 'system');
end loop;
v_count:=0;
for j in 1..25 loop
v_count:= v_count+1;
IF emp_id > 206
THEN
emp_id := 100;
END IF;
update employees
set salary = salary * 0.5
where employee_id = emp_id;
emp_id := emp_id + 1;
end loop;
end loop;
commit;
end;
/
We now trace off the session with the following command.
ALTER SESSION SET EVENTS '10046 trace name context off';
We now find the trace file for that session with the following query
SELECT value
FROM v$diag_info
WHERE name = 'Default Trace File';
E:\INSTALL\21CXE\diag\rdbms\xe\xe\trace\xe_ora_14232_MY_TEST_SESSION.trc
As SYSTEM user you can see the contents of this trace file by running the following query.
SELECT payload
FROM v$diag_trace_file_contents
WHERE trace_filename = 'xe_ora_14232_MY_TEST_SESSION.trc'
ORDER BY line_number;
The output of this file is in a non readable format, so we need to run a tkprof on this file to see the output which will show the time statistics, the number or executions, the explain plan of the query etc.
The statistics displayed in the trace file output are
- Parse and Execute Fetch Counts
- CPU and Elapsed Times
- Number of rows processed
- Misses on the library cache
- Username under which each parse occurred.
- Each commit and rollback
Below is the tkprof command for the same.
tkprof xe_ora_14232_MY_TEST_SESSION.trc xe_ora_14232_MY_TEST_SESSION.txt explain=HR/HR@xepdb1 table=sys.plan_table sys=no waits=yes
A sample of the data of the tkprof output is below which shows the DMLs and DDLs executed during the time of the session tracing.
:TKPROF: Release 21.0.0.0.0 - Development on Wed Jul 16 17:21:46 2025
Copyright (c) 1982, 2021, Oracle and/or its affiliates. All rights reserved.
Trace file: xe_ora_14232_MY_TEST_SESSION.trc
Sort options: default
********************************************************************************
count = number of times OCI procedure was executed
cpu = cpu time in seconds executing
elapsed = elapsed time in seconds executing
disk = number of physical reads of buffers from disk
query = number of buffers gotten for consistent read
current = number of buffers gotten in current mode (usually for update)
rows = number of rows processed by the fetch or execute call
********************************************************************************
..........
..........
..........
..........
..........
..........
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 11 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 12 0.00 0.00 0 0 0 0
Misses in library cache during parse: 11
Optimizer mode: ALL_ROWS
Parsing user id: 109
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 13 0.00 0.00
SQL*Net message from client 13 98.61 184.67
SQL*Net break/reset to client 24 0.00 0.00
PGA memory operation 1 0.00 0.00
********************************************************************************
declare
v_count number;
emp_id number := 100;
begin
v_count:=0;
for i in 1..100 loop
for j in 1..25 loop
v_count:= v_count+1;
insert into cal_cntr values (v_count, sysdate-i, 'system');
end loop;
v_count:=0;
for j in 1..25 loop
v_count:= v_count+1;
IF emp_id > 206
THEN
emp_id := 100;
END IF;
update employees
set salary = salary *2
where employee_id = emp_id;
emp_id := emp_id + 1;
end loop;
end loop;
commit;
end;
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 2 0.04 0.08 0 59 0 0
Execute 2 0.60 0.66 0 0 2 1
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 4 0.64 0.75 0 59 2 1
Misses in library cache during parse: 2
Optimizer mode: ALL_ROWS
Parsing user id: 109
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net break/reset to client 2 0.00 0.00
SQL*Net message to client 2 0.00 0.00
SQL*Net message from client 2 24.26 32.25
log file sync 1 0.00 0.00
PGA memory operation 1 0.00 0.00
********************************************************************************
SQL ID: byz7g33mj9zcu Plan Hash: 0
INSERT INTO CAL_CNTR
VALUES
(:B2 , SYSDATE-:B1 , 'system')
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 2 0.00 0.00 0 0 0 0
Execute 3050 0.25 0.56 196 29 12518 3050
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 3052 0.25 0.56 196 29 12518 3050
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 109 (recursive depth: 1)
Number of plan statistics captured: 2
Rows (1st) Rows (avg) Rows (max) Row Source Operation
---------- ---------- ---------- ---------------------------------------------------
0 0 0 LOAD TABLE CONVENTIONAL CAL_CNTR (cr=1 pr=4 pw=0 time=47016 us starts=1)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
Disk file operations I/O 2 0.00 0.00
db file sequential read 110 0.02 0.30
db file scattered read 3 0.01 0.02
********************************************************************************
SQL ID: 0jwztfffy5n3t Plan Hash: 751015319
UPDATE EMPLOYEES SET SALARY = SALARY *2
WHERE
EMPLOYEE_ID = :B1
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 2 0.00 0.00 0 0 0 0
Execute 3036 0.88 1.16 12 6228 12683 3035
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 3038 0.88 1.16 12 6228 12683 3035
Misses in library cache during parse: 2
Misses in library cache during execute: 2
Optimizer mode: ALL_ROWS
Parsing user id: 109 (recursive depth: 1)
Number of plan statistics captured: 2
Rows (1st) Rows (avg) Rows (max) Row Source Operation
---------- ---------- ---------- ---------------------------------------------------
0 0 0 UPDATE EMPLOYEES (cr=14 pr=4 pw=0 time=60559 us starts=1)
1 1 1 INDEX UNIQUE SCAN EMP_EMP_ID_PK (cr=2 pr=0 pw=0 time=19 us starts=1 cost=1 size=8 card=1)(object id 75845)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
db file sequential read 10 0.01 0.04
Disk file operations I/O 1 0.00 0.00
db file scattered read 1 0.01 0.01
********************************************************************************
SQL ID: 9dck4bumgswqv Plan Hash: 0
..........
..........
..........
..........
..........
..........
SQL ID: cd2dpuw5ucc8c Plan Hash: 0
ALTER TABLE EMPLOYEES MODIFY (SALARY NUMBER(20,5))
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.03 0 4 0 0
Execute 1 0.03 0.11 0 2 4 0
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.03 0.15 0 6 4 0
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 109
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
Compression analysis 9 0.00 0.00
SQL*Net message to client 1 0.00 0.00
SQL*Net message from client 1 4.23 4.23
********************************************************************************
..........
..........
..........
..........
..........
..........
********************************************************************************
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 22 0.09 0.18 0 101 0 0
Execute 12 1.74 1.91 0 224 6 1
Fetch 7 0.01 0.01 0 286 0 39
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 41 1.85 2.11 0 611 6 40
Misses in library cache during parse: 21
Misses in library cache during execute: 6
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 29 0.00 0.00
SQL*Net message from client 29 98.61 258.41
SQL*Net break/reset to client 29 0.00 0.00
PGA memory operation 716 0.00 0.04
Compression analysis 9 0.00 0.00
log file sync 1 0.00 0.00
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 259 0.17 0.22 0 248 0 0
Execute 10300 1.75 2.87 336 7106 29244 9323
Fetch 1765 0.08 0.15 7 3661 0 2798
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 12324 2.01 3.25 343 11015 29244 12121
Misses in library cache during parse: 123
Misses in library cache during execute: 113
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
PGA memory operation 70 0.00 0.00
Disk file operations I/O 4 0.00 0.00
db file sequential read 199 0.02 0.70
db file scattered read 6 0.01 0.03
34 user SQL statements in session.
238 internal SQL statements in session.
272 SQL statements in session.
0 statements EXPLAINed in this session.
********************************************************************************
Trace file: xe_ora_14232_MY_TEST_SESSION.trc
Trace file compatibility: 12.2.0.0
Sort options: default
1 session in tracefile.
34 user SQL statements in trace file.
238 internal SQL statements in trace file.
272 SQL statements in trace file.
152 unique SQL statements in trace file.
26640 lines in trace file.
264 elapsed seconds in trace file.
We can also use the dbms_monitor oracle package to enable and disable the tracing.
For this we grant execute on DBMS_MONITOR package as SYS user
GRANT EXECUTE ON DBMS_MONITOR TO HR;
Below are a list of commands that can be used to trace using DBMS_MONITOR
EXEC DBMS_MONITOR.session_trace_enable;
EXEC DBMS_MONITOR.session_trace_enable(waits=>TRUE, binds=>FALSE);
EXEC DBMS_MONITOR.session_trace_disable;
EXEC DBMS_MONITOR.session_trace_enable(session_id=>9, serial_num=>62220);
EXEC DBMS_MONITOR.session_trace_enable(session_id =>9, serial_num=>62220, waits=>TRUE, binds=>FALSE);
EXEC DBMS_MONITOR.session_trace_disable(session_id=>9, serial_num=>62220);
EXEC DBMS_MONITOR.client_id_trace_enable(client_id=>'test');
EXEC DBMS_MONITOR.client_id_trace_enable(client_id=>'test', waits=>TRUE, binds=>FALSE);
EXEC DBMS_MONITOR.client_id_trace_disable(client_id=>'test');
EXEC DBMS_MONITOR.serv_mod_act_trace_enable(service_name=>'xe', module_name=>'test_trace', action_name=>'running');
EXEC DBMS_MONITOR.serv_mod_act_trace_enable(service_name=>'xe', module_name=>'test_trace', action_name=>'running', waits=>TRUE, binds=>FALSE);
EXEC DBMS_MONITOR.serv_mod_act_trace_disable(service_name=>'xe', module_name=>'test_trace', action_name=>'running');
References
SQL trace, 10046, trcsess and tkprof in Oracle
Performance Tuning Basics 5 : Trace and TKPROF – Part 1: Trace
God's Word for the day
The poor are honored for their knowledge,
While the rich are honored for their wealth.
One who is honored in poverty, how much more in wealth,
And one who is dishonored in wealth, how much more in poverty.
Sirach 10:30-31
Appendix
A list of Oracle events and their usage is given below
10000 control file debug event, name 'control_file'
10001 control file crash event1
10002 control file crash event2
10003 control file crash event3
10004 control file crash event4
10005 trace latch operations for debugging
10006 testing - block recovery forced
10007 log switch debug crash after new log select, thread %s
10008 log switch debug crash after new log header write, thread %s
10009 log switch debug crash after old log header write, thread %s
10010 Begin Transaction
10011 End Transaction
10012 Abort Transaction
10013 Instance Recovery
10014 Roll Back to Save Point
10015 Undo Segment Recovery
10016 Undo Segment extend
10017 Undo Segment Wrap
10018 Data Segment Create
10019 Data Segment Recovery
10020 partial link restored to linked list (KSG)
10021 latch cleanup for state objects (KSS)
10022 trace ktsgsp
10023 Create Save Undo Segment
10024 Write to Save Undo
10025 Extend Save Undo Segment
10026 Apply Save Undo
10027 latch cleanup for enqueue locks (KSQ)
10028 latch cleanup for enqueue resources (KSQ)
10029 session logon (KSU)
10030 session logoff (KSU)
10031 row source debug event (R*)
10032 sort end (SOR*)
10035 parse SQL statement (OPIPRS)
10036 create remote row source (QKANET)
10037 allocate remote row source (QKARWS)
10038 dump row source tree (QBADRV)
10039 type checking (OPITCA)
10040 dirty cache list
10041 dump undo records skipped
10042 trap error during undo application
10044 free list undo operations
10045 "free list update operations - ktsrsp, ktsunl"
10046 enable SQL statement timing
10047 trace switching of sessions
10048 Undo segment shrink
10049 protect library cache memory heaps
10050 sniper trace
10051 trace OPI calls
10052 don't clean up obj$
10053 CBO Enable optimizer trace
10054 trace UNDO handling in MLS
10055 trace UNDO handing
10056 dump analyze stats (kdg)
10057 suppress file names in error messages
10058 use table scan cost in tab$.spare1
10060 CBO Enable predicate dump
10061 disable SMON from cleaning temp segment
10062 disable usage of OS Roles in osds
10063 disable usage of DBA and OPER privileges in osds
10064 "thread enable debug crash level %s, thread %s"
10065 limit library cache dump information for state object dump
10066 simulate failure to verify file
10067 force redo log checksum errors - block number
10068 force redo log checksum errors - file number
10069 Trusted Oracle test event
10070 force datafile checksum errors - block number
10071 force datafile checksum errors - file number
10072 protect latch recovery memory
10073 have PMON dump info before latch cleanup
10074 default trace function mask for kst
10075 CBO Disable outer-join to regular join conversion
10076 CBO Enable cartesian product join costing
10077 CBO Disable view-merging optimization for outer-joins
10078 CBO Disable constant predicate elimination optimization
10080 dump a block on a segment list which cannot be exchanged
10081 segment High Water Mark has been advanced
10082 free list head block is the same as the last block
10083 a brand new block has been requested from space management
10084 free list becomes empty
10085 free lists have been merged
10086 CBO Enable error if kko and qka disagree on oby sort
10087 disable repair of media corrupt data blocks
10088 CBO Disable new NOT IN optimization
10089 CBO Disable index sorting
10090 invoke other events before crash recovery
10091 CBO Disable constant predicate merging
10092 CBO Disable hash join
10093 CBO Enable force hash joins
10094 before resizing a data file
10095 dump debugger commands to trace file
10096 after the cross instance call when resizing a data file
10097 after generating redo when resizing a data file
10098 after the OS has increased the size of a data file
10099 after updating the file header with the new file size
10100 after the OS has decreased the size of a data file
10101 atomic redo write recovery
10102 switch off anti-joins
10103 CBO Disable hash join swapping
10104 dump hash join statistics to trace file
10105 CBO Enable constant pred trans and MPs w WHERE-clause
10106 CBO Disable evaluating correlation pred last for NOT IN
10107 CBO Always use bitmap index
10108 CBO Don't use bitmap index
10109 CBO Disable move of negated predicates
10110 CBO Try index rowid range scans
10111 Bitmap index creation switch
10112 Bitmap index creation switch
10113 Bitmap index creation switch
10114 Bitmap index creation switch
10115 CBO Bitmap optimization use maximal expression
10116 CBO Bitmap optimization switch
10117 CBO Disable new parallel cost model
10118 CBO Enable hash join costing
10119 QKA Disable GBY sort elimination
10120 CBO Disable index fast full scan
10121 CBO Don't sort bitmap chains
10122 CBO disable count(col) => count(*) transformation
10123 QKA Disable Bitmap And-EQuals
10145 test auditing network errors
10146 enable Oracle TRACE collection
10200 block cleanout
10201 consistent read undo application
10202 consistent read block header
10203 consistent read buffer status
10204 signal recursive extend
10205 row cache debugging
10206 transaction table consistent read
10207 consistent read transactions' status report
10208 consistent read loop check
10209 enable simulated error on control file
10210 check data block integrity
10211 check index block integrity
10212 check cluster integrity
10213 crash after control file write
10214 simulate write errors on control file
10215 simulate read errors on control file
10216 dump control file header
10217 debug sequence numbers
10218 dump uba of applied undo
10219 monitor multi-pass row locking
10220 show updates to the transaction table
10221 show changes done with undo
10222 row cache
10223 transaction layer - turn on verification codes
10226 trace CR applications of undo for data operations
10227 verify (multi-piece) row structure
10228 trace application of redo by kcocbk
10230 check redo generation by copying before applying
10231 skip corrupted blocks on _table_scans_
10232 dump corrupted blocks symbolically when kcbgotten
10233 skip corrupted blocks on index operations
10234 trigger event after calling kcrapc to do redo N times
10235 check memory manager internal structures
10236 library cache manager
10237 simulate ^C (for testing purposes)
10238 instantiation manager
10239 multi-instance library cache manager
10240 dump dba's of blocks that we wait for
10241 dump SQL generated for remote execution (OPIX)
10243 simulated error for test %s of K2GTAB latch cleanup
10244 make tranids in error msgs print as 0.0.0 (for testing)
10245 simulate lock conflict error for testing PMON
10246 print trace of PMON actions to trace file
10247 Turn on scgcmn tracing. (VMS ONLY)
10248 turn on tracing for dispatchers
10249 turn on tracing for multi-stated servers
10250 Trace all allocate and free calls to the topmost SGA heap
10251 check consistency of transaction table and undo block
10252 simulate write error to data file header
10253 simulate write error to redo log
10254 trace cross-instance calls
10256 turn off multi-threaded server load balancing
10257 trace multi-threaded server load balancing
10258 force shared servers to be chosen round-robin
10259 get error message text from remote using explicit call
10260 Trace calls to SMPRSET (VMS ONLY)
10261 Limit the size of the PGA heap
10262 Don't check for memory leaks
10263 Don't free empty PGA heap extents
10264 Collect statistics on context area usage (x$ksmcx)
10265 Keep random system generated output out of error messages
10266 Trace OSD stack usage
10267 Inhibit KSEDMP for testing
10268 Don't do forward coalesce when deleting extents
10269 Don't do coalesces of free space in SMON
10270 Debug shared cursors
10271 distributed transaction after COLLECT
10272 distributed transaction before PREPARE
10273 distributed transaction after PREPARE
10274 distributed transaction before COMMIT
10275 distributed transaction after COMMIT
10276 distributed transaction before FORGET
10277 Cursor sharing (or not) related event (used for testing)
10281 maximum time to wait for process creation
10282 Inhibit signalling of other backgrounds when one dies
10286 Simulate control file open error
10287 Simulate archiver error
10288 Do not check block type in ktrget
10289 Do block dumps to trace file in hex rather than fromatted
10290 kdnchk - checkvalid event - not for general purpose use.
10291 die in dtsdrv to test controlfile undo"
10292 dump uet entries on a 1561 from dtsdrv"
10293 dump debugging information when doing block recovery"
10294 enable PERSISTENT DLM operations on non-compliant systems"
10300 disable undo compatibility check at database open
10301 Enable LCK timeout table consistency check"
10320 Enable data layer (kdtgrs) tracing of space management calls"
10352 report direct path statistics
10353 number of slots
10354 turn on direct read path for parallel query
10355 turn on direct read path for scans
10356 turn on hint usage for direct read
10357 turn on debug information for direct path
10374 parallel query server interrupt (validate lock value)
10375 turn on checks for statistics rollups
10376 turn on table queue statistics
10377 turn off load balancing
10379 direct read for rowid range scans (unimplemented)
10380 kxfp latch cleanup testing event
10381 kxfp latch cleanup testing event
10382 parallel query server interrupt (reset)
10383 auto parallelization testing event
10384 parallel dataflow scheduler tracing
10385 parallel table scan range sampling method
10386 parallel SQL hash and range statistics
10387 parallel query server interrupt (normal)
10388 parallel query server interrupt (failure)
10389 parallel query server interrupt (cleanup)
10390 Trace parallel query slave execution
10391 trace rowid range partitioning
10392 parallel query debugging bits
10393 print parallel query statistics
10394 allow parallelization of small tables
10395 adjust sample size for range table queues
10396 circumvent range table queues for queries
10397 suppress verbose parallel coordinator error reporting
10398 enable timeouts in parallel query threads
10399 use different internal maximum buffer size
10400 turn on system state dumps for shutdown debugging
10500 turn on traces for SMON
10510 turn off SMON check to offline pending offline rollbacksegment
10511 turn off SMON check to cleanup undo dictionary
10512 turn off SMON check to shrink rollback segments
10600 check cursor frame allocation
10602 cause an access violation (for testing purposes)
10603 cause an error to occur during truncate (for testing purposes)
10604 trace parallel create index
10605 enable parallel create index by default
10606 trace parallel create index
10607 trace index rowid partition scan
10608 trace create bitmap index
10610 trace create index pseudo optimizer
10666 Do not get database enqueue name
10667 Cause sppst to check for valid process ids
10690 Set shadow process core file dump type (Unix only)
10691 Set background process core file type (Unix only)
10700 Alter access violation exception handler
10701 Dump direct loader index keys
10702 Enable histogram data generation
10703 Simulate process death during enqueue get
10704 Print out information about what enqueues are being obtained
10706 Print out information about instance lock manipulation
10707 Simulate process death for instance registration
10708 Print out Tracing information for skxf multi instance comms
10709 enable parallel instances in create index by default
10710 trace bitmap index access
10711 trace bitmap index merge
10712 trace bitmap index or
10713 trace bitmap index and
10714 trace bitmap index minus
10715 trace bitmap index conversion to rowids
10800 disable Smart Disk scan
10801 enable Smart Disk trace
10802 reserved for Smart Disk
10803 write timing statistics on OPS recovery scan
10804 reserved for ksxb
10805 reserved for row source sort
10900 extent manager fault insertion event #%s
10924 import storage parse error ignore event
10925 trace name context forever
10926 trace name context forever
10927 trace name context forever
10928 trace name context forever
10999 do not get database enqueue name
References For trace Event Numbers
