High temp space consumption by DBSNMP
Last updated on SEPTEMBER 19, 2016
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.1 to 11.2.0.3 [Release 11.2]Information in this document applies to any platform.
Symptoms
1. The following error is reported in the alert log file:
ORA-1652: unable to extend temp segment by xxx in tablespace TEMP
2. Monitoring which SQL statements are responsible for temp space consumption will return similar results:
SQL> SELECT S.sid || ',' || S.serial# sid_serial, S.username,
2 T.blocks * TBS.block_size / 1024 / 1024 mb_used, T.tablespace,
3 T.sqladdr address, Q.hash_value, Q.sql_text
4 FROM v$sort_usage T, v$session S, v$sqlarea Q, dba_tablespaces TBS
5 WHERE T.session_addr = S.saddr
6 AND T.sqladdr = Q.address (+)
7 AND T.tablespace = TBS.tablespace_name
8 ORDER BY S.sid;
SID_SERIAL USERNAME MB_USED TABLESPACE ADDRESS HASH_VALUE
SQL_TEXT
5965,8477 DBSNMP 14330 TEMP 070000042DAA4B20 1015067330
SELECT :B3 , :B2 , :B1 FROM DUAL
2 T.blocks * TBS.block_size / 1024 / 1024 mb_used, T.tablespace,
3 T.sqladdr address, Q.hash_value, Q.sql_text
4 FROM v$sort_usage T, v$session S, v$sqlarea Q, dba_tablespaces TBS
5 WHERE T.session_addr = S.saddr
6 AND T.sqladdr = Q.address (+)
7 AND T.tablespace = TBS.tablespace_name
8 ORDER BY S.sid;
SID_SERIAL USERNAME MB_USED TABLESPACE ADDRESS HASH_VALUE
SQL_TEXT
5965,8477 DBSNMP 14330 TEMP 070000042DAA4B20 1015067330
SELECT :B3 , :B2 , :B1 FROM DUAL
Please note that around 14GB of temp space is consumed by the following query ran by DBSNMP:
SELECT :B3 , :B2 , :B1 FROM DUAL
SELECT :B3 , :B2 , :B1 FROM DUAL
3. Some SQL statements can be very slow due to lack of temp space.
Cause
Sign In with your My Oracle Support account |
|
Don't have a My Oracle Support account? Click to get started |
My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms