Monthly Archives: August 2009

Start sqlplus in Windows .BAT script

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Here is the example of emulating “HERE-documents” in Windows shell.


@ECHO OFF

FIND "/*%none% some_label" <%0 |sqlplus USER/PASS@SERVER GOTO end : ----------- embedded SQL------------------------- /* some_label */ select count(*) from dba_free_space; /* some_label */ select tablespace_name from dba_tablespaces; : ----------- end of embedded SQL------------------------- :end

It's also possible to use procedures in .bat files.
%none% is replaced by empty string.
Spaces are mandadory in "/* some_label */" string.

Another possibility:
[cc lang="dos"]
@(
echo select global_name from global_name ;
) | sqlplus USER/PASS@SERVER
[/cc]

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Show hidden parameters in Oracle

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Check the hidden underscore parameters…


col "Parameter" for a50
col "Session Value" for a15
col "Instance Value" for a15

select a.ksppinm "Parameter",
b.ksppstvl "Session Value",
c.ksppstvl "Instance Value"
from x$ksppi a, x$ksppcv b, x$ksppsv c
where a.indx = b.indx and a.indx = c.indx
and substr(ksppinm,1,1)='_'
and lower(a.ksppinm) like lower('%&param%')
order by a.ksppinm;

Setting the parameter:

alter system set "&param." = value scope = &scope. ;

scope is one of the following: “both”, “memory”, “spfile”

To remove completely the hidden parameter from the spfile:

alter system reset "&param." scope=spfile SID='*';