2472995 - How to execute forced recovery on a simplex SAP IQ server | SAP Knowledge Base Article

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2472995 - How to execute forced recovery on a simplex SAP IQ server

Symptom

How to execute forced recovery on a simplex SAP IQ server, if on server startup you get something like the following in the .iqmsg file:

slib\s_bmfreelist.cxx:1394 [this=000000001691A190,bm=000000003A5FF718] Verify error: free list expecting _bitcnt = 49135679 (0x2edc03f), = actual count = 1045439 (0xff3bf)           
s_bm::Verify(this=000000003A5FF718):                                                                                                                                                  
s_bmidentity(this=000000003A5FF730)={ver=1,flg=010c,pad=00000000,cnt=49135679,rb=@(2,1)}                                                                                              
bmdmp(this=000000001691A190): L1 Root (uid=0;main Bufman). bpP=1045440                                                                                                            
L1: @(2,1): pda length: 1, 8B; data length: 2, 8B, blklen: 130944 
...

Followed by the following stacktrace:
DumpAllThreads
hos_ABORT                                                      
ThrowAbort                                                      
Throw                                                              
hos_assertexception::ThrowException                
s_dbmvbio::VerifyFreelistMappings_unsafe         
s_iqstore::Initialize                                           
st_database::OpenDatabase                              
db_opendb::Execute                                         
st_command::DoCmdThroughResourceGate        
st_iqctl::OpenDB                                              
UIQCtl_OpenDB


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Environment

SAP IQ 16.0

Product

SAP IQ 16.0 ; SAP IQ 16.1 ; SAP enhancement package 1 for SAP NetWeaver 7.3

Keywords

iqfrec , dropleaks , checkdb , sp_iqcheckdb , crash , NLS , KBA , BC-SYB-IQ , Sybase IQ , How To

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