2026-03-12 20:23:15
This commit is contained in:
root
116
csierra/cs_LGWR_report.sql
Normal file
116
csierra/cs_LGWR_report.sql
Normal file
@@ -0,0 +1,116 @@
|
||||
----------------------------------------------------------------------------------------
|
||||
--
|
||||
-- File name: cs_LGWR_report.sql
|
||||
--
|
||||
-- Purpose: Log Writer LGWR Slow Writes Duration Report - from current LGWR trace
|
||||
--
|
||||
-- Author: Carlos Sierra
|
||||
--
|
||||
-- Version: 2023/01/03
|
||||
--
|
||||
-- Usage: Execute connected to PDB or CDB
|
||||
--
|
||||
-- Enter range of dates when requested.
|
||||
--
|
||||
-- Example: $ sqlplus / as sysdba
|
||||
-- SQL> @cs_LGWR_report.sql
|
||||
--
|
||||
-- Notes: Developed and tested on 19c
|
||||
--
|
||||
---------------------------------------------------------------------------------------
|
||||
--
|
||||
@@cs_internal/cs_primary.sql
|
||||
@@cs_internal/cs_cdb_warn.sql
|
||||
@@cs_internal/cs_set.sql
|
||||
@@cs_internal/cs_def.sql
|
||||
@@cs_internal/cs_file_prefix.sql
|
||||
--
|
||||
DEF cs_script_name = 'cs_LGWR_report';
|
||||
DEF cs_hours_range_default = '24';
|
||||
--
|
||||
@@cs_internal/cs_sample_time_from_and_to.sql
|
||||
@@cs_internal/cs_snap_id_from_and_to.sql
|
||||
--
|
||||
SELECT '&&cs_file_prefix._&&cs_script_name.' cs_file_name FROM DUAL;
|
||||
--
|
||||
-- @@cs_internal/&&cs_set_container_to_cdb_root.
|
||||
--
|
||||
@@cs_internal/cs_spool_head.sql
|
||||
PRO SQL> @&&cs_script_name..sql "&&cs_sample_time_from." "&&cs_sample_time_to."
|
||||
@@cs_internal/cs_spool_id.sql
|
||||
--
|
||||
@@cs_internal/cs_spool_id_sample_time.sql
|
||||
--
|
||||
PRO
|
||||
PRO Log Writer LGWR Slow Writes Duration
|
||||
PRO ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
COL timestamp FOR A23 HEA 'Log Write|End|Timestamp' TRUNC;
|
||||
COL write_duration_ms FOR 999,990 HEA 'Write|Duration|(ms)';
|
||||
COL payload_size_kb FOR 999,999,990 HEA 'Payload|Size|KBs';
|
||||
COL kbps FOR 999,999,990 HEA 'KBs|per|Sec';
|
||||
--
|
||||
SELECT v4.timestamp,
|
||||
-- TO_CHAR(v4.timestamp, 'YYYY-MM-DD"T"HH24:MI:SS.FF3') AS timestamp,
|
||||
-- v4.payload_size AS payload_size_display,
|
||||
-- v4.write_duration AS write_duration_display,
|
||||
TO_NUMBER(REGEXP_REPLACE(v4.write_duration, '[^0-9]', '')) AS write_duration_ms,
|
||||
TO_NUMBER(REGEXP_REPLACE(v4.payload_size, '[^0-9]', '')) AS payload_size_kb,
|
||||
ROUND((TO_NUMBER(REGEXP_REPLACE(v4.payload_size, '[^0-9]', ''))) / NULLIF(TO_NUMBER(REGEXP_REPLACE(v4.write_duration, '[^0-9]', '')) / POWER(10,3), 0)) AS kbps
|
||||
FROM
|
||||
(
|
||||
SELECT v3.line_number,
|
||||
v3.timestamp,
|
||||
v3.write_duration,
|
||||
v3.payload_size,
|
||||
ROW_NUMBER() OVER (PARTITION BY v3.timestamp ORDER BY v3.payload_size DESC) AS rn
|
||||
FROM
|
||||
(
|
||||
SELECT v2.line_number,
|
||||
LAST_VALUE(v2.timestamp) IGNORE NULLS OVER (ORDER BY v2.line_number ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS timestamp,
|
||||
v2.write_duration,
|
||||
v2.payload_size
|
||||
FROM
|
||||
(
|
||||
SELECT v1.line_number,
|
||||
CASE v1.line_type WHEN 'DATE' THEN CAST(TO_TIMESTAMP_TZ(v1.line_text, 'YYYY-MM-DD"T"HH24:MI:SS.FF6TZH:TZM') AS TIMESTAMP) END AS timestamp,
|
||||
CASE v1.line_type WHEN 'WRITE' THEN SUBSTR(v1.line_text, 1, INSTR(v1.line_text, ', size ') - 1) END AS write_duration,
|
||||
CASE v1.line_type WHEN 'WRITE' THEN SUBSTR(v1.line_text, INSTR(v1.line_text, ', size ') + 7) END AS payload_size
|
||||
FROM
|
||||
(
|
||||
SELECT line_number,
|
||||
CASE
|
||||
-- WHEN payload LIKE CHR(10)||'*** '||TO_CHAR(SYSDATE, 'YYYY')||'%' THEN 'DATE' -- failed after 2023-01-01
|
||||
WHEN payload LIKE CHR(10)||'*** ____-__-__T__:__:__%' THEN 'DATE'
|
||||
WHEN payload LIKE 'Warning: log write elapsed time %' THEN 'WRITE'
|
||||
END AS line_type,
|
||||
CASE
|
||||
-- WHEN payload LIKE CHR(10)||'*** '||TO_CHAR(SYSDATE, 'YYYY')||'%' THEN SUBSTR(SUBSTR(payload, 1, INSTR(payload, '(') - 2), INSTR(payload, TO_CHAR(SYSDATE, 'YYYY'))) -- failed after 2023-01-01
|
||||
WHEN payload LIKE CHR(10)||'*** ____-__-__T__:__:__%' THEN SUBSTR(SUBSTR(payload, 1, INSTR(payload, '(') - 2), INSTR(payload, '20'))
|
||||
WHEN payload LIKE 'Warning: log write elapsed time %' THEN REPLACE(payload, 'Warning: log write elapsed time ')
|
||||
END AS line_text
|
||||
FROM v$diag_trace_file_contents
|
||||
WHERE trace_filename = (SELECT LOWER(b.name)||'_'||LOWER(p.pname)||'_'||p.spid||'.trc' AS lgwr_trc FROM v$diag_info d, v$process p, v$database b WHERE d.name = 'Diag Trace' AND p.pname = 'LGWR')
|
||||
) v1
|
||||
WHERE v1.line_type IN ('DATE', 'WRITE')
|
||||
AND v1.line_text IS NOT NULL
|
||||
) v2
|
||||
) v3
|
||||
WHERE v3.write_duration||payload_size IS NOT NULL
|
||||
AND timestamp IS NOT NULL
|
||||
) v4
|
||||
WHERE v4.rn = 1
|
||||
AND v4.timestamp >= TO_TIMESTAMP('&&cs_sample_time_from.', '&&cs_datetime_full_format.')
|
||||
AND v4.timestamp <= TO_TIMESTAMP('&&cs_sample_time_to.', '&&cs_datetime_full_format.')
|
||||
ORDER BY v4.timestamp
|
||||
/
|
||||
--
|
||||
PRO
|
||||
PRO SQL> @&&cs_script_name..sql "&&cs_sample_time_from." "&&cs_sample_time_to."
|
||||
--
|
||||
@@cs_internal/cs_spool_tail.sql
|
||||
--
|
||||
-- @@cs_internal/&&cs_set_container_to_curr_pdb.
|
||||
--
|
||||
@@cs_internal/cs_undef.sql
|
||||
@@cs_internal/cs_reset.sql
|
||||
--
|
||||
Reference in New Issue
Block a user