Siebel Administration >  Siebel Server Start Error: No remembered search string

The more detailed error message was-
Error message: siebel@servername:/FOLDER_NAME/8.1/siebsrvr/bin> ./start_server all
Showed this result
SERVER_NAME grep: RE error 41: No remembered search string.
not stopped: Error trying to stop service process (service may not have stopped) X connection to localhost:10.0 broken (explicit kill or server shutdown). Siebel Server "SERVER_NAME" (Enterprise "ENTERPRISE_NAME") ./start_server[262]: 28202 Segmentation Fault(coredump)

Solution:
In support web , it said this
1. Recreate the svc* files under siebsrvr\sys
$siebctl -S siebsrvr -i "siebprd_ent:APPDBOU05" -a -g "-g APPDBOU05 -e siebprd_ent -s APPDBOU05"
This should successfully created the svc file.

2. After we restarted siebel server, and got another error: $start_server all error Cleaning up previous execution of siebprd_ent::APPDBOU05 ... The file /siebel/siebsrvr/sys/osdf.siebprd_ent.APPDBOU05 does not exist not stopped:

3. rename the osdf file, and rerun the start_server all It was completed, but no log files created in siebel server, there are logs in enterprise server as below: in SiebSrvr.log, SBL-SVR-00029: Shared memory has not been initialized GenericLog GenericError 2003-12-16 21:15:27 (siebsvc.cpp 12(218) err=2000026 sys=0) SBL-SVR-00026: Unable to allocate shared memory in siebel.log, SBL-SVR-00031: Attached to the wrong shared memory instance

4. Remove *.shm under SIEBEL_ROOT/admin. We tried to restart Siebel server.
We got a new error message: Port 2321 already in use.

Solved by killing all sieb* processes and:

siebel 6424 6423 0 09:31:41 ? 0:00 regss 5
siebel 6425 6423 0 09:31:42 ? 0:00 mwrpcss -1 0

After this siebel server was successfully started.