I can confirm with current sources:
test=> CREATE UNIQUE INDEX shadow_index ON pg_shadow (usename);CREATEtest=> select * from pg_shadow;ERROR: Index
'pg_shadow_sysid_index'does not existtest=> \q$ psql testpsql: FATAL 1: Index 'pg_shadow_name_index' does not exist$
gdb shows that the check in heap_create() is working because the
index name does not begin with pg_, just the base table:
Breakpoint 1, heap_create (relname=0x838d1d0 "shadow_index", tupDesc=0x83915e4, istemp=0 '\000', storage_create=0
'\000', allow_system_table_mods=0) at heap.c:183183 bool nailme = false;
First, should we allow user-specified indexes on system tables, and if
so, why does this error happen?
Notice the user wanted an index named shadow_index, but the error
mentioned is pg_shadow_name_index.
> Hi
>
> Regarding my previous post, I just successfully created a unique index on
> pg_shadow. DON'T DO THIS!!!
> -------
> CREATE UNIQUE INDEX shadow_index ON pg_shadow (usename)
> -------
> I couldn't create at pg_shadow_index as the pg prefix is reserved for
> system tables.
>
> This BROKE the database. At least I can't connect anymore with a:
> -------
> template1=# \c statements
> FATAL 1: Index 'pg_shadow_name_index' does not exist
> Previous connection kept
> template1=#
> -------
> If I look at the error log I get :
> -------
> ERROR: Illegal class name 'pg_shadow_index'
> The 'pg_' name prefix is reserved for system catalogs
> ERROR: Index 'pg_shadow_name_index' does not exist
> ERROR: SearchSysCache: recursive use of cache 23
> ERROR: SearchSysCache: recursive use of cache 23
> ERROR: SearchSysCache: recursive use of cache 23
> ERROR: SearchSysCache: recursive use of cache 23 <-- quite psql here
> FATAL 1: Index 'pg_shadow_name_index' does not exist <-- restarted again
> FATAL 1: Index 'pg_shadow_name_index' does not exist
> FATAL 1: Index 'pg_shadow_name_index' does not exist
> -------
>
> What can I do??? I've got a non-trivial amount of data that I cannot afford
> to lose!! HELP!..
>
> Regards
> MArCin - Thanks
>
>
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-- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610)
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