通过查询metalink给出了以下解决方案，目前系统交换分区跟内存一样都是8G，就没有扩充；最后通过在不过度影响数据库性能的方式减
有个数据库因为内存耗尽导致重启，，以下为alert日志记录的错误信息：
Mon Jun 13 15:27:47 EAT 2011
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/Oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
Mon Jun 13 15:27:47 EAT 2011
Unexpected communication failure with ASM instance:
error 12549 (ORA-12549: TNS:operating system resource quota exceeded
)
NOTE: ASMB process state dumped to trace file /oracle/admin/scrk/bdump/scrk1_arc1_4251.trc
Mon Jun 13 15:27:48 EAT 2011
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
ERROR: Failed to connect with connect string:(DESCRIPTION=(ADDRESS=(PROTOCOL=beq)(PROGRAM=/oracle/product/10.2.0/db_tmp/bin/oracle)(ARGV0=orac
le+ASM1)(ENVS='ORACLE_HOME=/oracle/product/10.2.0/db_tmp,ORACLE_SID=+ASM1')(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(enable=
setuser))
Mon Jun 13 15:27:49 EAT 2011
Unexpected communication failure with ASM instance:
error 12549 (ORA-12549: TNS:operating system resource quota exceeded
)
NOTE: ASMB process state dumped to trace file /oracle/admin/scrk/bdump/scrk1_arc1_4251.trc
Mon Jun 13 15:27:50 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_arc1_4251.trc:
ORA-00313: open failed for members of log group 3 of thread 1
ORA-00312: online log 3 thread 1: '+SCRKDATA01/scrk/onlinelog/group_3.980.728931221'
ORA-17503: ksfdopn:2 Failed to open file +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
ORA-12549: TNS:operating system resource quota exceeded
ORA-00312: online log 3 thread 1: '+SCRKDATA01/scrk/onlinelog/group_3.971.728928961'
ORA-17503: ksfdopn:2 Failed to open file +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
ORA-12549: TNS:operating system resource quota exceeded
Mon Jun 13 15:27:50 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_arc1_4251.trc:
ORA-00313: open failed for members of log group 3 of thread 1
ORA-00312: online log 3 thread 1: '+SCRKDATA01/scrk/onlinelog/group_3.980.728931221'
ORA-17503: ksfdopn:2 Failed to open file +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
ORA-12549: TNS:operating system resource quota exceeded
ORA-00312: online log 3 thread 1: '+SCRKDATA01/scrk/onlinelog/group_3.971.728928961'
ORA-17503: ksfdopn:2 Failed to open file +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
ORA-12549: TNS:operating system resource quota exceeded
Mon Jun 13 15:28:55 EAT 2011
Archiver process freed from errors. No longer stopped
Mon Jun 13 15:28:55 EAT 2011
Thread 1 advanced to log sequence 457996 (LGWR switch)
Current log# 3 seq# 457996 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 457996 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:28:55 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:28:55 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
ORA-27302: failure occurred at: skgpspawn5
ORA-27303: additional information: skgpspawn5
Mon Jun 13 15:28:56 EAT 2011
Process O001 died, see its trace file
Mon Jun 13 15:28:56 EAT 2011
ksvsubmit: Process(O001) creation failed
Mon Jun 13 15:29:06 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:29:06 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
ORA-27302: failure occurred at: skgpspawn5
ORA-27303: additional information: skgpspawn5
Mon Jun 13 15:29:06 EAT 2011
Thread 1 cannot allocate new log, sequence 457997
Checkpoint not complete
Current log# 3 seq# 457996 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 457996 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:29:07 EAT 2011
Process PZ97 died, see its trace file
Mon Jun 13 15:29:08 EAT 2011
Thread 1 advanced to log sequence 457997 (LGWR switch)
Current log# 2 seq# 457997 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 457997 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:29:18 EAT 2011
Thread 1 cannot allocate new log, sequence 457998
Checkpoint not complete
Current log# 2 seq# 457997 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 457997 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:29:20 EAT 2011
Thread 1 advanced to log sequence 457998 (LGWR switch)
Current log# 1 seq# 457998 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 457998 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:29:23 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:29:23 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
ORA-27302: failure occurred at: skgpspawn5
ORA-27303: additional information: skgpspawn5
Mon Jun 13 15:29:24 EAT 2011
Process P000 died, see its trace file
Mon Jun 13 15:29:24 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:29:24 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
ORA-27302: failure occurred at: skgpspawn5
ORA-27303: additional information: skgpspawn5
Mon Jun 13 15:29:25 EAT 2011
Process P001 died, see its trace file
Mon Jun 13 15:29:30 EAT 2011
Thread 1 cannot allocate new log, sequence 457999
Checkpoint not complete
Current log# 1 seq# 457998 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 457998 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:29:32 EAT 2011
Thread 1 advanced to log sequence 457999 (LGWR switch)
Current log# 3 seq# 457999 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 457999 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:29:42 EAT 2011
Thread 1 cannot allocate new log, sequence 458000
Checkpoint not complete
Current log# 3 seq# 457999 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 457999 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:29:44 EAT 2011
Thread 1 advanced to log sequence 458000 (LGWR switch)
Current log# 2 seq# 458000 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 458000 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:29:54 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:29:54 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
ORA-27302: failure occurred at: skgpspawn5
ORA-27303: additional information: skgpspawn5
Mon Jun 13 15:29:54 EAT 2011
Thread 1 cannot allocate new log, sequence 458001
Checkpoint not complete
Current log# 2 seq# 458000 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 458000 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:29:55 EAT 2011
Process J001 died, see its trace file
Mon Jun 13 15:29:55 EAT 2011
kkjcre1p: unable to spawn jobq slave process
Mon Jun 13 15:29:55 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_cjq0_3796.trc:
Mon Jun 13 15:29:56 EAT 2011
Thread 1 advanced to log sequence 458001 (LGWR switch)
Current log# 1 seq# 458001 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 458001 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:30:06 EAT 2011
Thread 1 advanced to log sequence 458002 (LGWR switch)
Current log# 3 seq# 458002 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 458002 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:30:16 EAT 2011
Thread 1 cannot allocate new log, sequence 458003
Checkpoint not complete
Current log# 3 seq# 458002 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 458002 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:30:17 EAT 2011
Thread 1 advanced to log sequence 458003 (LGWR switch)
Current log# 2 seq# 458003 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 458003 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:30:28 EAT 2011
Thread 1 advanced to log sequence 458004 (LGWR switch)
Current log# 1 seq# 458004 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 458004 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:30:38 EAT 2011
Thread 1 advanced to log sequence 458005 (LGWR switch)
Current log# 3 seq# 458005 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 458005 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:30:40 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:30:40 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302: failure occurred at: skgpspawn3
Mon Jun 13 15:30:41 EAT 2011
Process m001 died, see its trace file
Mon Jun 13 15:30:41 EAT 2011
ksvcreate: Process(m001) creation failed
Mon Jun 13 15:30:46 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:30:46 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302: failure occurred at: skgpspawn3
Mon Jun 13 15:30:47 EAT 2011
Process P000 died, see its trace file
Mon Jun 13 15:30:49 EAT 2011
Thread 1 advanced to log sequence 458006 (LGWR switch)
Current log# 2 seq# 458006 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 458006 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:30:55 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:30:55 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302: failure occurred at: skgpspawn3
Mon Jun 13 15:30:56 EAT 2011
Process J000 died, see its trace file
Mon Jun 13 15:30:56 EAT 2011
kkjcre1p: unable to spawn jobq slave process
Mon Jun 13 15:30:56 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_cjq0_3796.trc:
Mon Jun 13 15:30:59 EAT 2011
Thread 1 advanced to log sequence 458007 (LGWR switch)
Current log# 1 seq# 458007 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 458007 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:31:05 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:31:05 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302: failure occurred at: skgpspawn3
Mon Jun 13 15:31:06 EAT 2011
Process P000 died, see its trace file
Mon Jun 13 15:31:10 EAT 2011
Thread 1 cannot allocate new log, sequence 458008
Checkpoint not complete
Current log# 1 seq# 458007 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 458007 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:31:10 EAT 2011
Thread 1 advanced to log sequence 458008 (LGWR switch)
Current log# 3 seq# 458008 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 458008 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:31:21 EAT 2011
Thread 1 advanced to log sequence 458009 (LGWR switch)
Current log# 2 seq# 458009 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 458009 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:31:26 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:31:26 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302: failure occurred at: skgpspawn3
Mon Jun 13 15:31:27 EAT 2011
Process P000 died, see its trace file
Mon Jun 13 15:31:31 EAT 2011
Thread 1 cannot allocate new log, sequence 458010
Checkpoint not complete
Current log# 2 seq# 458009 mem# 0: +SCRKDATA01/scrk/onlinelog/group_2.972.728929483
Current log# 2 seq# 458009 mem# 1: +SCRKDATA01/scrk/onlinelog/group_2.979.728931207
Mon Jun 13 15:31:33 EAT 2011
Thread 1 advanced to log sequence 458010 (LGWR switch)
Current log# 1 seq# 458010 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 458010 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:31:38 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:31:38 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 12
ORA-27301: OS failure message: Not enough space
ORA-27302: failure occurred at: skgpspawn3
Mon Jun 13 15:31:39 EAT 2011
Process P000 died, see its trace file
Mon Jun 13 15:31:43 EAT 2011
Thread 1 cannot allocate new log, sequence 458011
Checkpoint not complete
Current log# 1 seq# 458010 mem# 0: +SCRKDATA01/scrk/onlinelog/group_1.976.728930203
Current log# 1 seq# 458010 mem# 1: +SCRKDATA01/scrk/onlinelog/group_1.978.728931175
Mon Jun 13 15:31:45 EAT 2011
Thread 1 advanced to log sequence 458011 (LGWR switch)
Current log# 3 seq# 458011 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 458011 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:31:54 EAT 2011
Terminating process 3779, due to ORA-4030 raised in ASM I/O path
Mon Jun 13 15:31:54 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_dbw0_3779.trc:
ORA-04030: out of process memory when trying to allocate 1049136 bytes (KSFD vec heap,KSFD contig I/O buf)
Mon Jun 13 15:31:55 EAT 2011
Process startup failed, error stack:
Mon Jun 13 15:31:55 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_psp0_3767.trc:
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
ORA-27302: failure occurred at: skgpspawn5
ORA-27303: additional information: skgpspawn5
Mon Jun 13 15:31:55 EAT 2011
Thread 1 cannot allocate new log, sequence 458012
Checkpoint not complete
Current log# 3 seq# 458011 mem# 0: +SCRKDATA01/scrk/onlinelog/group_3.971.728928961
Current log# 3 seq# 458011 mem# 1: +SCRKDATA01/scrk/onlinelog/group_3.980.728931221
Mon Jun 13 15:31:55 EAT 2011
Errors in file /oracle/admin/scrk/bdump/scrk1_pmon_3757.trc:
ORA-00471: DBWR process terminated with error
Mon Jun 13 15:31:55 EAT 2011
PMON: terminating instance due to error 471
Mon Jun 13 15:31:58 EAT 2011
System state dump is made for local instance
System State dumped to trace file /oracle/admin/scrk/bdump/scrk1_diag_3765.trc
Mon Jun 13 15:32:03 EAT 2011
Shutting down instance (abort)
License high water mark = 307
Mon Jun 13 15:32:05 EAT 2011
Termination issued to instance processes. Waiting for the processes to exit
Instance terminated by PMON, pid = 3757
Mon Jun 13 15:32:08 EAT 2011
Instance terminated by USER, pid = 10948
Mon Jun 13 15:32:13 EAT 2011
Starting ORACLE instance (normal)
Mon Jun 13 15:32:13 EAT 2011
通过查询metalink给出了以下解决方案，目前系统交换分区跟内存一样都是8G，就没有扩充；最后通过在不过度影响数据库性能的方式减小SGA给系统保留更多的内存。有点郁闷的是据说HP UNIX 11.31很吃内存，但是也不能保留3个多G都不够用吧。
ASM ORA-12549: TNS:Operating System Resource Quota Exceeded [ID 738855.1]
--------------------------------------------------------------------------------
Applies to:
Oracle Server - Enterprise Edition - Version: 10.1.0.2 to 11.1.0.7
This problem can occur on any platform.
Symptoms
In the ASM alert.log file the next error was reported:
=========================================================
Sun Sep 14 01:04:38 2008
Errors in file /u01/app/oracle/admin/CLEADB/bdump/cleadb1_arc5_20944.trc:
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '+DISKGROUPMIRROR/cleadb/redot102.log'
ORA-17503: ksfdopn:2 Failed to open file +DISKGROUPMIRROR/cleadb/redot102.log
ORA-12549: TNS:operating system resource quota exceeded
Sun Sep 14 01:04:38 20
=========================================================
Cause
System (Unix or Linux) was running out of swap therefore the next error was reported:
The ORA-12549: TNS:operating system resource quota exceeded error was raised due to the OS was
running out of swap space.
Solution
Please ask your SA to resize the Swap area following the next formula:
If RAM = 1024MB to 2048Mb
then 1.5 times RAM
elseif RAM > 2048MB and then match RAM
else RAM > 8192MB
then .75 times RAM
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SQL Commands in MySQL: Practical ExamplesApr 14, 2025 am 12:09 AMSQL commands in MySQL can be divided into categories such as DDL, DML, DQL, DCL, etc., and are used to create, modify, delete databases and tables, insert, update, delete data, and perform complex query operations. 1. Basic usage includes CREATETABLE creation table, INSERTINTO insert data, and SELECT query data. 2. Advanced usage involves JOIN for table joins, subqueries and GROUPBY for data aggregation. 3. Common errors such as syntax errors, data type mismatch and permission problems can be debugged through syntax checking, data type conversion and permission management. 4. Performance optimization suggestions include using indexes, avoiding full table scanning, optimizing JOIN operations and using transactions to ensure data consistency.
How does InnoDB handle ACID compliance?Apr 14, 2025 am 12:03 AMInnoDB achieves atomicity through undolog, consistency and isolation through locking mechanism and MVCC, and persistence through redolog. 1) Atomicity: Use undolog to record the original data to ensure that the transaction can be rolled back. 2) Consistency: Ensure the data consistency through row-level locking and MVCC. 3) Isolation: Supports multiple isolation levels, and REPEATABLEREAD is used by default. 4) Persistence: Use redolog to record modifications to ensure that data is saved for a long time.
MySQL's Place: Databases and ProgrammingApr 13, 2025 am 12:18 AMMySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen
MySQL: From Small Businesses to Large EnterprisesApr 13, 2025 am 12:17 AMMySQL is suitable for small and large enterprises. 1) Small businesses can use MySQL for basic data management, such as storing customer information. 2) Large enterprises can use MySQL to process massive data and complex business logic to optimize query performance and transaction processing.
What are phantom reads and how does InnoDB prevent them (Next-Key Locking)?Apr 13, 2025 am 12:16 AMInnoDB effectively prevents phantom reading through Next-KeyLocking mechanism. 1) Next-KeyLocking combines row lock and gap lock to lock records and their gaps to prevent new records from being inserted. 2) In practical applications, by optimizing query and adjusting isolation levels, lock competition can be reduced and concurrency performance can be improved.
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