Mercurial > sqlpython
annotate mysqlpy.py @ 41:33c9bc61db66
separation surgery successful?
| author | devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil |
|---|---|
| date | Fri, 18 Jan 2008 15:37:45 -0500 |
| parents | 65ae6cec71c6 |
| children | de6278a3bf53 |
| rev | line source |
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| 0 | 1 #!/usr/bin/python |
| 2 # MySqlPy V1.3 | |
| 3 # Author: Luca.Canali@cern.ch | |
| 4 # | |
| 5 # | |
| 6 # Companion of SqlPython, a python module that reproduces Oracle's command line within python | |
| 7 # 'sqlplus inside python' | |
| 8 # See also: http://twiki.cern.ch/twiki/bin/view/PSSGroup/SqlPython | |
| 9 # http://catherine.devlin.googlepages.com/ | |
| 10 | |
| 11 from sqlpyPlus import * | |
| 12 import binascii | |
| 13 | |
| 14 class mysqlpy(sqlpyPlus): | |
| 15 ''' | |
| 16 MySqlPy V1.3 - 'sqlplus in python' | |
| 17 Author: Luca.Canali@cern.ch | |
| 18 Rev: 1.3.0, 17-Oct-07 | |
| 19 | |
| 20 Companion of SqlPython, a python module that reproduces Oracle's command line within python | |
| 21 and sqlpyPlus. Major contributions by Catherine Devlin, http://catherinedevlin.blogspot.com | |
| 22 Quick start command list: | |
| 23 | |
| 24 - top -> executes a query to list all active sessions in (Oracle 10g and RAC) | |
| 25 (use: instance activity monitoring, a DBA tool) | |
| 26 - tselect -> prints the result set in trasposed form, useful to print result sets with | |
| 27 many columns such as dba_ or v$ views (ex: dba_tables or v$instance) | |
| 28 - py -> execute a python command (C.D.) | |
| 29 - db -> quick connect using credentials in pass.txt file | |
| 30 (Ex: write username and pass in pass.txt and then "db db_alias" to connect) | |
| 31 - sql -> prints the sql text from the cache. parameter: sql_id of the statement | |
| 32 (Ex: sql fzqa1qj65nagki) | |
| 33 - explain -> prints the execution plan from the cache. parameter: sql_id of the statement | |
| 34 - sessinfo-> prints session information. 1 parameter sid (Ex: sql 101 print info for sid 101) | |
| 35 - longops -> prints from gv$session_longops (running full scans, etc) | |
| 36 - load -> prints the OS load on all cluster nodes (10g RAC) | |
| 37 - sleect,slect -> alias for select (I mistyped select this way too many times...) | |
| 38 - top9i -> 9i (and single instance) version of top | |
| 39 - describe, @, !, spool, show, set, list, get, write -> sql*plus-like, from sqlpyPlus (C.D.) | |
| 40 - shortcuts: \c (connect), \d (describe), etc, from sqlpyPlus (C.D.) | |
| 41 - :myvarname = xx, set autobind 1, print -> bind variables management extension, to sqlplus (C.D.) | |
| 42 | |
| 43 Example: | |
| 44 SQL> connect username@dbalias or username/pass@dbalias | |
| 45 SQL> select sysdate from dual; | |
| 46 SQL> exit | |
| 47 ''' | |
| 48 | |
| 49 def __init__(self): | |
| 50 sqlpyPlus.__init__(self) | |
| 51 self.maxtselctrows = 10 | |
| 52 self.query_load10g = ''' | |
| 53 ins.instance_name,ins.host_name,round(os.value,2) load | |
| 54 from gv$osstat os, gv$instance ins | |
| 55 where os.inst_id=ins.inst_id and os.stat_name='LOAD' | |
| 56 order by 3 desc; | |
| 57 ''' | |
| 58 self.query_top9i = ''' | |
| 59 sid,username,osuser||'@'||terminal "Server User@terminal",program,taddr, status, | |
| 60 module, sql_hash_value hash, fixed_table_sequence seq, last_call_et elaps | |
| 61 from v$session | |
| 62 where username is not null and program not like 'emagent%' and status='ACTIVE' | |
| 63 and audsid !=sys_context('USERENV','SESSIONID'); | |
| 64 ''' | |
| 65 self.query_ractop = ''' | |
| 66 inst_id||'_'||sid inst_sid,username,osuser||'@'||terminal "User@Term",program, decode(taddr,null,null,'NN') tr, | |
| 67 sql_id, '.'||mod(fixed_table_sequence,1000) seq, state||': '||event event, | |
| 68 case state when 'WAITING' then seconds_in_wait else wait_time end w_tim, last_call_et elaps | |
| 69 from gv$session | |
| 70 where status='ACTIVE' and username is not null | |
| 71 and not (event like '% waiting for messages in the queue' and state='WAITING') | |
| 72 and audsid !=sys_context('USERENV','SESSIONID'); | |
| 73 ''' | |
| 74 self.query_longops = ''' | |
| 75 inst_id,sid,username,time_remaining remaining, elapsed_seconds elapsed, sql_hash_value hash, opname,message | |
| 76 from gv$session_longops | |
| 77 where time_remaining>0; | |
| 78 ''' | |
| 79 | |
| 80 def do_top9i(self,args): | |
| 81 '''Runs query_top9i defined above, to display active sessions in Oracle 9i''' | |
| 82 self.do_select(self.query_top9i) | |
| 83 | |
| 84 def do_top(self,args): | |
| 85 '''Runs query_ractop defined above, to display active sessions in Oracle 10g (and RAC)''' | |
| 86 self.do_select(self.query_ractop) | |
| 87 | |
| 88 def do_longops(self,args): | |
| 89 '''Runs query_longops defined above, to display long running operations (full scans, etc)''' | |
| 90 self.do_select(self.query_longops) | |
| 91 | |
| 92 def do_load(self,args): | |
| 93 '''Runs query_load10g defined above, to display OS load on cluster nodes (10gRAC)''' | |
| 94 self.do_select(self.query_load10g) | |
| 95 | |
| 96 def do_db(self,args,filepath='pass.txt'): | |
| 97 '''Exec do_connect to db_alias in args (credentials form the file pass.txt) ''' | |
| 98 f = open(filepath,'r') | |
| 99 connectstr = f.readline().strip() +'@'+args | |
| 100 self.do_connect(connectstr) | |
| 101 f.close() | |
| 102 | |
| 103 def do_py(self, arg): | |
| 104 '''Executes a python command''' | |
| 105 try: | |
| 106 exec(arg) | |
| 107 except Exception, e: | |
| 108 print e | |
| 109 | |
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110 def do_tselect(self, arg): |
| 0 | 111 '''executes a query and prints the result in trasposed form. Useful when querying tables with many columns''' |
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113 self.do_select(arg, override_terminator='\\t') |
| 0 | 114 |
| 115 def do_sql(self,args): | |
| 116 '''prints sql statement give the sql_id (Oracle 10gR2)''' | |
| 117 self.query = "select inst_id, sql_fulltext from gv$sqlstats where sql_id='"+args+"'" | |
| 118 try: | |
| 119 self.curs.execute(self.query) | |
| 120 row = self.curs.fetchone() | |
| 121 print "\nSQL statement from cache" | |
| 122 print "------------------------\n" | |
| 123 while row: | |
| 124 print "\nINST_ID = "+str(row[0])+" - SQL TEXT:\n", row[1].read() | |
| 125 row = self.curs.next() | |
| 126 except Exception, e: | |
| 127 print e | |
| 128 | |
| 129 def do_explain(self,args): | |
| 130 '''prints the plan of a given statement from the sql cache. 1 parameter: sql_id, see also do_sql ''' | |
| 131 self.query = "select * from table(dbms_xplan.display_cursor('"+args+"'))" | |
| 132 try: | |
| 133 self.curs.execute(self.query) | |
| 134 rows = self.curs.fetchall() | |
| 135 desc = self.curs.description | |
| 136 self.rc = self.curs.rowcount | |
| 137 if self.rc > 0: | |
| 138 print '\n' + sqlpython.pmatrix(rows,desc,200) | |
| 139 except Exception, e: | |
| 140 print e | |
| 141 | |
| 142 def do_sessinfo(self,args): | |
| 143 '''Reports session info for the give sid, extended to RAC with gv$''' | |
| 144 self.do_tselect('* from gv$session where sid='+args+';') | |
| 145 | |
| 146 def do_sleect(self,args): | |
| 147 '''implements sleect = select, a common typo''' | |
| 148 self.do_select(args) | |
| 149 | |
| 150 do_slect = do_sleect | |
| 151 | |
| 152 def run(): | |
| 153 my=mysqlpy() | |
| 154 print my.__doc__ | |
| 155 my.cmdloop() | |
| 156 | |
| 157 if __name__ == '__main__': | |
| 158 run() |