DB2日常维护
1、启动DB2
db2admin start
2、关闭DB2
db2stop
3、查看示例数据库配置参数
[db2inst1@db2-10 ~]$ db2 get db cfg for oasystem Database Configuration for Database oasystem Database configuration release level = 0x0f00 Database release level = 0x0f00 Database territory = cn Database code page = 1208 Database code set = UTF-8 Database country/region code = 86 Database collating sequence = IDENTITY Alternate collating sequence (ALT_COLLATE) = Number compatibility = OFF Varchar2 compatibility = OFF Date compatibility = OFF Database page size = 4096 Statement concentrator (STMT_CONC) = OFF Discovery support for this database (DISCOVER_DB) = ENABLE Restrict access = NO Default query optimization class (DFT_QUERYOPT) = 5 Degree of parallelism (DFT_DEGREE) = 1 Continue upon arithmetic exceptions (DFT_SQLMATHWARN) = NO Default refresh age (DFT_REFRESH_AGE) = 0 Default maintained table types for opt (DFT_MTTB_TYPES) = SYSTEM Number of frequent values retained (NUM_FREQVALUES) = 10 Number of quantiles retained (NUM_QUANTILES) = 20 Decimal floating point rounding mode (DECFLT_ROUNDING) = ROUND_HALF_EVEN Backup pending = NO All committed transactions have been written to disk = YES Rollforward pending = NO Restore pending = NO Multi-page file allocation enabled = YES Log retain for recovery status = NO User exit for logging status = NO Self tuning memory (SELF_TUNING_MEM) = ON Size of database shared memory (4KB) (DATABASE_MEMORY) = AUTOMATIC(407780) Database memory threshold (DB_MEM_THRESH) = 10 Max storage for lock list (4KB) (LOCKLIST) = AUTOMATIC(13984) Percent. of lock lists per application (MAXLOCKS) = AUTOMATIC(98) Package cache size (4KB) (PCKCACHESZ) = AUTOMATIC(2038) Sort heap thres for shared sorts (4KB) (SHEAPTHRES_SHR) = AUTOMATIC(23806) Sort list heap (4KB) (SORTHEAP) = AUTOMATIC(1190) Database heap (4KB) (DBHEAP) = AUTOMATIC(4648) Catalog cache size (4KB) (CATALOGCACHE_SZ) = 300 Log buffer size (4KB) (LOGBUFSZ) = 2150 Utilities heap size (4KB) (UTIL_HEAP_SZ) = 59909 Buffer pool size (pages) (BUFFPAGE) = 1000 SQL statement heap (4KB) (STMTHEAP) = AUTOMATIC(8192) Default application heap (4KB) (APPLHEAPSZ) = AUTOMATIC(256) Application Memory Size (4KB) (APPL_MEMORY) = AUTOMATIC(40000) Statistics heap size (4KB) (STAT_HEAP_SZ) = AUTOMATIC(4384) Interval for checking deadlock (ms) (DLCHKTIME) = 10000 Lock timeout (sec) (LOCKTIMEOUT) = -1 Changed pages threshold (CHNGPGS_THRESH) = 80 Number of asynchronous page cleaners (NUM_IOCLEANERS) = AUTOMATIC(4) Number of I/O servers (NUM_IOSERVERS) = AUTOMATIC(3) Index sort flag (INDEXSORT) = YES Sequential detect flag (SEQDETECT) = YES Default prefetch size (pages) (DFT_PREFETCH_SZ) = AUTOMATIC Track modified pages (TRACKMOD) = NO Default number of containers = 1 Default tablespace extentsize (pages) (DFT_EXTENT_SZ) = 32 Max number of active applications (MAXAPPLS) = AUTOMATIC(40) Average number of active applications (AVG_APPLS) = AUTOMATIC(1) Max DB files open per application (MAXFILOP) = 61440 Log file size (4KB) (LOGFILSIZ) = 1024 Number of primary log files (LOGPRIMARY) = 13 Number of secondary log files (LOGSECOND) = 12 Changed path to log files (NEWLOGPATH) = Path to log files = /home/db2inst1/db2inst1/NODE0000/SQL00001/LOGSTREAM0000/ Overflow log path (OVERFLOWLOGPATH) = Mirror log path (MIRRORLOGPATH) = First active log file = Block log on disk full (BLK_LOG_DSK_FUL) = NO Block non logged operations (BLOCKNONLOGGED) = NO Percent max primary log space by transaction (MAX_LOG) = 0 Num. of active log files for 1 active UOW(NUM_LOG_SPAN) = 0 Percent log file reclaimed before soft chckpt (SOFTMAX) = 520 HADR database role = STANDARD HADR local host name (HADR_LOCAL_HOST) = HADR local service name (HADR_LOCAL_SVC) = HADR remote host name (HADR_REMOTE_HOST) = HADR remote service name (HADR_REMOTE_SVC) = HADR instance name of remote server (HADR_REMOTE_INST) = HADR timeout value (HADR_TIMEOUT) = 120 HADR target list (HADR_TARGET_LIST) = HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC HADR spool log data limit (4KB) (HADR_SPOOL_LIMIT) = 0 HADR log replay delay (seconds) (HADR_REPLAY_DELAY) = 0 HADR peer window duration (seconds) (HADR_PEER_WINDOW) = 0 First log archive method (LOGARCHMETH1) = OFF Archive compression for logarchmeth1 (LOGARCHCOMPR1) = OFF Options for logarchmeth1 (LOGARCHOPT1) = Second log archive method (LOGARCHMETH2) = OFF Archive compression for logarchmeth2 (LOGARCHCOMPR2) = OFF Options for logarchmeth2 (LOGARCHOPT2) = Failover log archive path (FAILARCHPATH) = Number of log archive retries on error (NUMARCHRETRY) = 5 Log archive retry Delay (secs) (ARCHRETRYDELAY) = 20 Vendor options (VENDOROPT) = Auto restart enabled (AUTORESTART) = ON Index re-creation time and redo index build (INDEXREC) = SYSTEM (RESTART) Log pages during index build (LOGINDEXBUILD) = OFF Default number of loadrec sessions (DFT_LOADREC_SES) = 1 Number of database backups to retain (NUM_DB_BACKUPS) = 12 Recovery history retention (days) (REC_HIS_RETENTN) = 366 Auto deletion of recovery objects (AUTO_DEL_REC_OBJ) = OFF TSM management class (TSM_MGMTCLASS) = TSM node name (TSM_NODENAME) = TSM owner (TSM_OWNER) = TSM password (TSM_PASSWORD) = Automatic maintenance (AUTO_MAINT) = ON Automatic database backup (AUTO_DB_BACKUP) = OFF Automatic table maintenance (AUTO_TBL_MAINT) = ON Automatic runstats (AUTO_RUNSTATS) = ON Real-time statistics (AUTO_STMT_STATS) = ON Statistical views (AUTO_STATS_VIEWS) = OFF Automatic sampling (AUTO_SAMPLING) = OFF Automatic statistics profiling (AUTO_STATS_PROF) = OFF Statistics profile updates (AUTO_PROF_UPD) = OFF Automatic reorganization (AUTO_REORG) = OFF Auto-Revalidation (AUTO_REVAL) = DEFERRED Currently Committed (CUR_COMMIT) = ON CHAR output with DECIMAL input (DEC_TO_CHAR_FMT) = NEW Enable XML Character operations (ENABLE_XMLCHAR) = YES WLM Collection Interval (minutes) (WLM_COLLECT_INT) = 0 Monitor Collect Settings Request metrics (MON_REQ_METRICS) = BASE Activity metrics (MON_ACT_METRICS) = BASE Object metrics (MON_OBJ_METRICS) = EXTENDED Unit of work events (MON_UOW_DATA) = NONE UOW events with package list (MON_UOW_PKGLIST) = OFF UOW events with executable list (MON_UOW_EXECLIST) = OFF Lock timeout events (MON_LOCKTIMEOUT) = NONE Deadlock events (MON_DEADLOCK) = WITHOUT_HIST Lock wait events (MON_LOCKWAIT) = NONE Lock wait event threshold (MON_LW_THRESH) = 5000000 Number of package list entries (MON_PKGLIST_SZ) = 32 Lock event notification level (MON_LCK_MSG_LVL) = 1 SMTP Server (SMTP_SERVER) = SQL conditional compilation flags (SQL_CCFLAGS) = Section actuals setting (SECTION_ACTUALS) = NONE Connect procedure (CONNECT_PROC) = Adjust temporal SYSTEM_TIME period (SYSTIME_PERIOD_ADJ) = NO Log DDL Statements (LOG_DDL_STMTS) = NO Log Application Information (LOG_APPL_INFO) = NO Default data capture on new Schemas (DFT_SCHEMAS_DCC) = NO Database is in write suspend state = NO
4、查看执行计划
